{"title":"Solar PV Protection \u0026 Switching","description":"\u003cp\u003eEverything you need to protect and switch a solar PV installation, from WCED. Our range includes weatherproof PV combiner boxes in metal and plastic with built-in Type 2 surge protection, 4 pole rotary isolators including 1000V DC versions for the string side, and manual changeover switches for generator and standby supplies. Whether you’re fitting a single-string domestic system or a larger array, you’ll find the right isolation, combining and surge protection here, with technical support available from the WCED team.\u003c\/p\u003e","products":[{"product_id":"wced-surge-protection-standalone","title":"Surge Protection standalone modules","description":"\u003c!-- ============================================================\n     PRODUCT 9: Surge Protection Standalone Modules (AC)\n     Paste into: Shopify Admin \u003e Products \u003e \/products\/surge-protection-electrical-protection-fitted-consumer-unit\n     Meta title:  AC Surge Protection Standalone Modules for EV Chargers | Type 2 SPD – EcoHarmony\n     Meta desc:   Standalone Type 2 AC surge protection modules for EV charger installations. DIN rail mounted, 2-pole and 4-pole. BS7671 Amendment 2 compliant. UK stock.\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .eh-product{font-family:sans-serif;color:#1a1a1a;line-height:1.7;max-width:860px;font-size:16px;}\n  .eh-product h2{font-size:20px;font-weight:600;margin:28px 0 8px;border-bottom:2px solid #1D9E75;padding-bottom:5px;color:#085041;}\n  .eh-product h3{font-size:17px;font-weight:600;margin:20px 0 5px;color:#1a1a1a;}\n  .eh-product p{margin:8px 0;font-size:16px;}\n  .eh-product ul{margin:6px 0 14px 22px;}\n  .eh-product li{margin:5px 0;font-size:16px;}\n  .eh-callout{background:#E1F5EE;border-left:4px solid #1D9E75;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-callout strong{color:#085041;}\n  .eh-warn{background:#FAEEDA;border-left:4px solid #BA7517;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-specs{width:100%;border-collapse:collapse;margin:14px 0;}\n  .eh-specs th{background:#085041;color:#fff;padding:8px 12px;text-align:left;font-size:15px;}\n  .eh-specs td{padding:8px 12px;border-bottom:1px solid #e0e0e0;font-size:15px;}\n  .eh-specs tr:nth-child(even) td{background:#f5f5f5;}\n  .eh-faq{margin:16px 0;}\n  .eh-faq details{border:1px solid #e0e0e0;border-radius:6px;margin:8px 0;}\n  .eh-faq summary{padding:12px 16px;font-weight:600;cursor:pointer;font-size:16px;color:#085041;}\n  .eh-faq details[open] summary{border-bottom:1px solid #e0e0e0;}\n  .eh-faq .faq-body{padding:12px 16px;font-size:16px;line-height:1.7;}\n  .eh-links{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}\n  .eh-links a{background:#085041;color:#fff;padding:7px 14px;border-radius:4px;text-decoration:none;font-size:15px;}\n  .eh-links a:hover{background:#1D9E75;}\n  .eh-badge{display:inline-block;background:#E1F5EE;color:#085041;padding:4px 11px;border-radius:20px;font-size:13px;font-weight:600;margin:2px;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"eh-product\"\u003e\n\n  \u003cp\u003eThese \u003cstrong\u003estandalone AC Type 2 surge protection modules\u003c\/strong\u003e can be added to any existing consumer unit, distribution board, or enclosure to provide surge protection for EV charger circuits and other sensitive electrical equipment. Available in 2-pole and 4-pole configurations, they mount on a standard 35 mm DIN rail and are designed for flexible use across a range of single-phase and three-phase installations.\u003c\/p\u003e\n\n  \u003cdiv class=\"eh-callout\"\u003e\n    \u003cstrong\u003eAdd surge protection to any existing board.\u003c\/strong\u003e Where a pre-fitted board is not required and you simply need to add a Type 2 SPD to an existing enclosure, these standalone modules are the most flexible and cost-effective solution.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhat's included\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eType 2 AC surge protection module — 2-pole or 4-pole (select variant)\u003c\/li\u003e\n    \u003cli\u003eDIN rail clip for 35 mm rail mounting\u003c\/li\u003e\n    \u003cli\u003eSuitable for single-phase (2-pole) and three-phase (4-pole) circuits\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n  \u003ctable class=\"eh-specs\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSPD type\u003c\/td\u003e\n\u003ctd\u003eType 2 AC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConfigurations\u003c\/td\u003e\n\u003ctd\u003e2-pole (single-phase) and 4-pole (3-phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eEV chargers, heat pumps, sensitive electrical equipment\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRegulation compliance\u003c\/td\u003e\n\u003ctd\u003eBS 7671:2018 Amendment 2\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n  \u003cdiv class=\"eh-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhy does BS 7671 now require surge protection on EV charger installs?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eBS 7671 Amendment 2 introduced a requirement for a risk assessment for surge protection on EV charger circuits. Modern EV chargers contain sensitive electronics that are vulnerable to transient overvoltages caused by lightning activity and grid switching events. For most UK installs, the risk assessment concludes that Type 2 surge protection is required.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat can a surge event do to an EV charger?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eA transient overvoltage — a brief spike in voltage lasting microseconds — can damage or destroy the sensitive control electronics inside an EV charger. This can cause the charger to fail, require expensive repair, or need complete replacement. A Type 2 SPD diverts the surge energy safely to earth before it reaches the charger's internal circuitry.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs a Type 1 or Type 2 SPD needed for EV chargers?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eType 2 SPDs are standard for EV charger installations. Type 1 SPDs are used at the service entrance where there is a risk of direct lightning strike to overhead conductors — typically only required where specified by the risk assessment. For the vast majority of UK EV installations, a Type 2 SPD is the correct and sufficient protection level.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDoes this module include PEN fault detection or an RCBO?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eNo. This is a standalone surge protection module only. For a complete single-phase PME protection solution including PEN fault detection, RCBO, and surge protection in one unit, see our \u003ca href=\"\/products\/pen-fault-detection-with-surge-protection\"\u003ecombined PEN fault + surge unit\u003c\/a\u003e.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between 2-pole and 4-pole SPD modules?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eA 2-pole module is for single-phase circuits (line and neutral). A 4-pole module is for three-phase circuits (three lines and neutral). Using a 2-pole module on a 3-phase circuit would only protect one phase — always match the pole configuration to your supply.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003ch2\u003eRelated products and resources\u003c\/h2\u003e\n  \u003cdiv class=\"eh-links\"\u003e\n    \u003ca href=\"\/products\/dc-surge-protection-standalone-modules\"\u003eDC Surge Modules\u003c\/a\u003e\n    \u003ca href=\"\/products\/pen-fault-detection-with-surge-protection\"\u003ePEN Fault + Surge (All-in-One)\u003c\/a\u003e\n    \u003ca href=\"\/products\/fitted-consumer-unit-rcbo-surge-protection\"\u003ePre-Fitted RCBO + Surge Board\u003c\/a\u003e\n    \u003ca href=\"\/collections\/surge-protection\"\u003eFull Surge Range\u003c\/a\u003e\n    \u003ca href=\"\/pages\/product-finder\"\u003eProduct Finder\u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv\u003e\n    \u003cspan class=\"eh-badge\"\u003eType 2 AC SPD\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eStandalone Module\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eDIN Rail\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003e2-Pole \u0026amp; 4-Pole\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eSingle \u0026amp; 3-Phase\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eBS 7671 Compliant\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eUK Stock\u003c\/span\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Why does BS 7671 require surge protection on EV charger installations?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"BS 7671 Amendment 2 requires a risk assessment for surge protection. EV charger electronics are vulnerable to transient overvoltages from lightning and grid switching. For most UK installs, the risk assessment concludes that a Type 2 SPD is required.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Is a Type 1 or Type 2 SPD needed for an EV charger?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Type 2 SPDs are standard for EV charger installations. Type 1 is only used at the service entrance where there is a risk of direct lightning strike to overhead conductors. For most UK EV installs, Type 2 is the correct and sufficient protection level.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What does a surge event do to an EV charger?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A transient overvoltage can damage or destroy the sensitive control electronics inside an EV charger, causing failure or requiring expensive replacement. A Type 2 SPD diverts the surge energy safely to earth before it reaches the charger's internal circuitry.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"WCED","offers":[{"title":"2 Pole \/ Type 2","offer_id":40059998666830,"sku":"WSPD240","price":18.5,"currency_code":"GBP","in_stock":true},{"title":"2 Pole \/ Type 1\/2","offer_id":57157280104835,"sku":"WSPDTE-2","price":52.0,"currency_code":"GBP","in_stock":true},{"title":"4 Pole \/ Type 2","offer_id":40059998699598,"sku":"WSPD440","price":36.0,"currency_code":"GBP","in_stock":true},{"title":"4 Pole \/ Type 1\/2","offer_id":57157280137603,"sku":"WSPDTE-4","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"3 Poles \/ Type 2","offer_id":57157278761347,"sku":"WSPD340","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"3 Poles \/ Type 1\/2","offer_id":57157280170371,"sku":null,"price":18.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/7545\/products\/W-SPD-2P.png?v=1679566620"},{"product_id":"dc-surge-protection-standalone-modules","title":"DC Surge Protection standalone modules","description":"\u003c!-- ============================================================\n     PRODUCT 4: DC Surge Protection Standalone Modules\n     Paste into: Shopify Admin \u003e Products \u003e Description (HTML editor)\n     Meta title:  DC Surge Protection Modules for EV Chargers – Standalone SPD | EcoHarmony\n     Meta desc:   Standalone DC surge protection modules (Type 2 SPD) for EV and PV systems. DIN rail mounted, protects against transient overvoltages up to 1000V DC. UK stock.\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .eh-product{font-family:sans-serif;color:#1a1a1a;line-height:1.7;max-width:860px;font-size:16px;}\n  .eh-product h2{font-size:20px;font-weight:600;margin:28px 0 8px;border-bottom:2px solid #1D9E75;padding-bottom:5px;color:#085041;}\n  .eh-product h3{font-size:17px;font-weight:600;margin:20px 0 5px;color:#1a1a1a;}\n  .eh-product p{margin:8px 0;font-size:16px;}\n  .eh-product ul{margin:6px 0 14px 22px;}\n  .eh-product li{margin:5px 0;font-size:16px;}\n  .eh-callout{background:#E1F5EE;border-left:4px solid #1D9E75;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-callout strong{color:#085041;}\n  .eh-warn{background:#FAEEDA;border-left:4px solid #BA7517;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-specs{width:100%;border-collapse:collapse;margin:14px 0;}\n  .eh-specs th{background:#085041;color:#fff;padding:8px 12px;text-align:left;font-size:15px;}\n  .eh-specs td{padding:8px 12px;border-bottom:1px solid #e0e0e0;font-size:15px;}\n  .eh-specs tr:nth-child(even) td{background:#f5f5f5;}\n  .eh-compare{width:100%;border-collapse:collapse;margin:14px 0;}\n  .eh-compare th{background:#085041;color:#fff;padding:8px 12px;text-align:left;font-size:15px;}\n  .eh-compare td{padding:8px 12px;border-bottom:1px solid #e0e0e0;font-size:15px;}\n  .eh-compare tr:nth-child(even) td{background:#f5f5f5;}\n  .eh-faq{margin:16px 0;}\n  .eh-faq details{border:1px solid #e0e0e0;border-radius:6px;margin:8px 0;}\n  .eh-faq summary{padding:12px 16px;font-weight:600;cursor:pointer;font-size:16px;color:#085041;}\n  .eh-faq details[open] summary{border-bottom:1px solid #e0e0e0;}\n  .eh-faq .faq-body{padding:12px 16px;font-size:16px;line-height:1.7;}\n  .eh-links{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}\n  .eh-links a{background:#085041;color:#fff;padding:7px 14px;border-radius:4px;text-decoration:none;font-size:15px;}\n  .eh-links a:hover{background:#1D9E75;}\n  .eh-badge{display:inline-block;background:#E1F5EE;color:#085041;padding:4px 11px;border-radius:20px;font-size:13px;font-weight:600;margin:2px;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"eh-product\"\u003e\n\n  \u003cp\u003eThese \u003cstrong\u003estandalone DC surge protection modules\u003c\/strong\u003e are Type 2 SPDs designed for the DC side of EV charging, solar PV, and other DC electrical systems. Available in 2-pole and 4-pole configurations, they mount on a standard 35 mm DIN rail and can be added to an existing enclosure wherever DC-side surge protection is needed — without requiring a complete pre-fitted board.\u003c\/p\u003e\n\n  \u003cdiv class=\"eh-callout\"\u003e\n    \u003cstrong\u003eDC surge protection is different from AC surge protection.\u003c\/strong\u003e Standard AC surge protection devices are not suitable for use on DC circuits. These modules are specifically designed and rated for DC systems up to 1000 V, making them suitable for EV charging infrastructure and solar PV installations.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhat's included\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eStandalone DC SPD module — 2-pole or 4-pole (select variant)\u003c\/li\u003e\n    \u003cli\u003eDIN rail clip for 35 mm rail mounting\u003c\/li\u003e\n    \u003cli\u003eRated for DC systems up to 1000 V\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n  \u003ctable class=\"eh-specs\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSPD type\u003c\/td\u003e\n\u003ctd\u003eType 2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSystem type\u003c\/td\u003e\n\u003ctd\u003eDC (not for AC circuits)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum DC voltage\u003c\/td\u003e\n\u003ctd\u003eUp to 1000 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConfigurations\u003c\/td\u003e\n\u003ctd\u003e2-pole and 4-pole\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eEV charging (DC side), solar PV, battery storage\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eDC vs AC surge protection — what's the difference?\u003c\/h2\u003e\n  \u003ctable class=\"eh-compare\"\u003e\n    \u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eAC SPD\u003c\/th\u003e\n\u003cth\u003eDC SPD (this product)\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCircuit type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC supply circuits\u003c\/td\u003e\n\u003ctd\u003eDC circuits only\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConsumer units, distribution boards\u003c\/td\u003e\n\u003ctd\u003eEV DC side, solar PV, battery systems\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e230 V \/ 400 V AC\u003c\/td\u003e\n\u003ctd\u003eUp to 1000 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eArc extinction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC zero-crossing aided\u003c\/td\u003e\n\u003ctd\u003eActive DC arc suppression required\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eWhen would I use a standalone module?\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAdding DC surge protection to an existing enclosure or distribution board\u003c\/li\u003e\n    \u003cli\u003eSolar PV installations requiring DC-side SPD protection\u003c\/li\u003e\n    \u003cli\u003eBattery energy storage systems where DC transient protection is required\u003c\/li\u003e\n    \u003cli\u003eEV charging infrastructure where the installer supplies their own enclosure\u003c\/li\u003e\n    \u003cli\u003eRetrofit or upgrade of an existing DC system where a pre-fitted board is not needed\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n  \u003cdiv class=\"eh-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is DC surge protection and why is it different from AC surge protection?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eAC surge protection devices are designed to work with alternating current, which has a natural zero-crossing point that helps extinguish the arc when the device operates. DC circuits have no zero-crossing, meaning the arc is much harder to extinguish — DC-specific SPDs use active arc suppression mechanisms designed for this. Using an AC SPD on a DC circuit is unsafe and ineffective.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo I need DC surge protection as well as AC surge protection for an EV charger?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eFor AC EV chargers (Types 1 and 2 — 7 kW, 11 kW, 22 kW), AC surge protection is typically all that is required on the incoming supply. DC surge protection modules are primarily used where there is a DC generation or storage system (solar PV, battery) connected to the installation, or for DC rapid chargers where the DC output circuit requires independent SPD protection.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between 2-pole and 4-pole DC SPD modules?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eA 2-pole module protects a two-conductor DC circuit (positive and negative). A 4-pole module provides protection across four conductors and is used in systems with a mid-point reference or where additional protection is required across multiple DC lines — common in larger solar PV or battery storage systems.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhen would I use a standalone module rather than a pre-fitted board?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eStandalone modules are used when you need to add surge protection to an existing enclosure rather than installing a complete pre-fitted board. They are also useful where the installer wants to specify their own enclosure, or where the DC SPD is just one component within a larger custom distribution assembly.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003ch2\u003eRelated products and resources\u003c\/h2\u003e\n  \u003cdiv class=\"eh-links\"\u003e\n    \u003ca href=\"\/products\/surge-protection-electrical-protection-fitted-consumer-unit\"\u003eAC Surge Protection Modules\u003c\/a\u003e\n    \u003ca href=\"\/products\/pen-fault-detection-with-surge-protection\"\u003ePEN Fault + Surge (Single Phase)\u003c\/a\u003e\n    \u003ca href=\"\/collections\/surge-protection\"\u003eFull Surge Protection Range\u003c\/a\u003e\n    \u003ca href=\"\/pages\/product-finder\"\u003eProduct Finder\u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv\u003e\n    \u003cspan class=\"eh-badge\"\u003eDC Type 2 SPD\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eStandalone Module\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eDIN Rail\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003e2-Pole \u0026amp; 4-Pole\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eSolar PV Compatible\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eUp to 1000V DC\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eUK Stock\u003c\/span\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is DC surge protection and why is it different from AC surge protection?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"DC circuits have no natural zero-crossing point, making arcs harder to extinguish than in AC circuits. DC surge protection modules use active arc suppression designed for DC systems. Using an AC SPD on a DC circuit is unsafe and ineffective.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Do I need DC surge protection for an EV charger?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"For standard AC EV chargers (7kW–22kW), AC surge protection on the incoming supply is typically sufficient. DC surge protection modules are used where solar PV, battery storage, or DC rapid charging infrastructure is present.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between 2-pole and 4-pole DC SPD modules?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"A 2-pole module protects a two-conductor DC circuit (positive and negative). A 4-pole module is used in systems with a mid-point reference or multiple DC lines, common in larger PV or battery storage systems.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"WCED","offers":[{"title":"2 Pole - 600V","offer_id":44527575728449,"sku":"WSPV6000","price":20.0,"currency_code":"GBP","in_stock":true},{"title":"3 Pole -1000V","offer_id":44527575761217,"sku":"WSPV10000","price":22.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/7545\/files\/W-SPD-2P-DC_ba5478fb-936e-4551-b0f2-bd7b92a5db7b.png?v=1689689340"},{"product_id":"wced-solar-pv-combiner-boxes-1000v-dc","title":"WCED Solar PV Combiner Boxes — 1000V DC","description":"\u003c!-- ============================================================\n     PRODUCT: WCED Solar PV Combiner Boxes — 1000V DC\n     SKUs: WMPV-1S1 | WMPV-2S2 | WPPV-1S1 | WPPV-2S2\n     Meta title:  WCED Solar PV Combiner Box | 1000V DC | EcoHarmony\n     Meta desc:   1000V DC solar PV combiner boxes for string combining and overcurrent protection in solar installations. DIN rail mount, pre-wired options available.\n     ============================================================ --\u003e\n\u003cstyle\u003e\n  .eh-product{font-family:sans-serif;color:#1a1a1a;line-height:1.7;max-width:860px;font-size:16px;}\n  .eh-product h2{font-size:20px;font-weight:600;margin:28px 0 8px;border-bottom:2px solid #1D9E75;padding-bottom:5px;color:#085041;}\n  .eh-product h3{font-size:17px;font-weight:600;margin:20px 0 5px;color:#1a1a1a;}\n  .eh-product p{margin:8px 0;font-size:16px;}\n  .eh-product ul{margin:6px 0 14px 22px;}\n  .eh-product li{margin:5px 0;font-size:16px;}\n  .eh-callout{background:#E1F5EE;border-left:4px solid #1D9E75;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-callout strong{color:#085041;}\n  .eh-warn{background:#FAEEDA;border-left:4px solid #BA7517;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-specs{width:100%;border-collapse:collapse;margin:14px 0;}\n  .eh-specs th{background:#085041;color:#fff;padding:8px 12px;text-align:left;font-size:15px;}\n  .eh-specs td{padding:8px 12px;border-bottom:1px solid #e0e0e0;font-size:15px;}\n  .eh-specs tr:nth-child(even) td{background:#f5f5f5;}\n  .eh-faq{margin:16px 0;}\n  .eh-faq details{border:1px solid #e0e0e0;border-radius:6px;margin:8px 0;}\n  .eh-faq summary{padding:12px 16px;font-weight:600;cursor:pointer;font-size:16px;color:#085041;}\n  .eh-faq details[open] summary{border-bottom:1px solid #e0e0e0;}\n  .eh-faq .faq-body{padding:12px 16px;font-size:16px;line-height:1.7;}\n  .eh-links{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}\n  .eh-links a{background:#085041;color:#fff;padding:7px 14px;border-radius:4px;text-decoration:none;font-size:15px;}\n  .eh-links a:hover{background:#1D9E75;}\n  .eh-badge{display:inline-block;background:#E1F5EE;color:#085041;padding:4px 11px;border-radius:20px;font-size:13px;font-weight:600;margin:2px;}\n\u003c\/style\u003e\n\u003cdiv class=\"eh-product\"\u003e\n\u003cp\u003e\u003cstrong\u003eString protection, DC isolation and Type 2 surge protection in one weatherproof unit.\u003c\/strong\u003e The WCED WMPV and WPPV series sit between your PV array and inverter, providing everything needed for compliant, safe DC string protection, in metal or polycarbonate IP65 enclosures.\u003c\/p\u003e\n\u003cdiv class=\"eh-callout\"\u003e\n\u003cstrong\u003eWhat a combiner box does.\u003c\/strong\u003e It brings one or two PV string cables to a single organised connection point, provides a safe DC disconnect so the inverter can be isolated without touching the array, and absorbs surge energy from lightning-induced overvoltages in the string cables before they reach the inverter's DC input electronics.\u003c\/div\u003e\n\u003cp\u003eThe WCED range covers the most common domestic and light commercial configurations — 1-string and 2-string, in metal and polycarbonate enclosures — all rated to 1000V DC and supplied ready to install.\u003c\/p\u003e\n\u003ch2\u003eChoose your model\u003c\/h2\u003e\n\u003ctable class=\"eh-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eEnclosure\u003c\/th\u003e\n\u003cth\u003ePrice ex. VAT\u003c\/th\u003e\n\u003cth\u003ePrice inc. VAT\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-String Metal\u003c\/td\u003e\n\u003ctd\u003eWMPV-1S1\u003c\/td\u003e\n\u003ctd\u003eMetal IP65\u003c\/td\u003e\n\u003ctd\u003e£72.00\u003c\/td\u003e\n\u003ctd\u003e£86.40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-String Metal\u003c\/td\u003e\n\u003ctd\u003eWMPV-2S2\u003c\/td\u003e\n\u003ctd\u003eMetal IP65\u003c\/td\u003e\n\u003ctd\u003e£112.00\u003c\/td\u003e\n\u003ctd\u003e£134.40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-String Plastic\u003c\/td\u003e\n\u003ctd\u003eWPPV-1S1\u003c\/td\u003e\n\u003ctd\u003ePolycarbonate IP65\u003c\/td\u003e\n\u003ctd\u003e£68.00\u003c\/td\u003e\n\u003ctd\u003e£81.60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-String Plastic\u003c\/td\u003e\n\u003ctd\u003eWPPV-2S2\u003c\/td\u003e\n\u003ctd\u003ePolycarbonate IP65\u003c\/td\u003e\n\u003ctd\u003e£115.00\u003c\/td\u003e\n\u003ctd\u003e£138.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat's inside every combiner box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e45A DC rotary isolator — safe disconnection without touching the array\u003c\/li\u003e\n\u003cli\u003eDC fuse holder with 15A fuse per string — string overcurrent protection\u003c\/li\u003e\n\u003cli\u003eType 2 DC SPD — 20kA\/40kA, 1000V rated\u003c\/li\u003e\n\u003cli\u003eIP65 IK10 enclosure — weatherproof and impact resistant\u003c\/li\u003e\n\u003cli\u003eCable gland entries — maintain the IP65 rating\u003c\/li\u003e\n\u003cli\u003eDIN rail mounted internally — EN 61439-2\/3 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMetal vs plastic — which should I choose?\u003c\/h2\u003e\n\u003ctable class=\"eh-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eMetal (WMPV)\u003c\/th\u003e\n\u003cth\u003ePlastic polycarbonate (WPPV)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure\u003c\/td\u003e\n\u003ctd\u003eIP65 steel\u003c\/td\u003e\n\u003ctd\u003eIP65 polycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImpact rating\u003c\/td\u003e\n\u003ctd\u003eIK10\u003c\/td\u003e\n\u003ctd\u003eIK10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest suited to\u003c\/td\u003e\n\u003ctd\u003eCommercial or exposed locations\u003c\/td\u003e\n\u003ctd\u003eDomestic external walls and roof spaces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eHeavier, more robust feel\u003c\/td\u003e\n\u003ctd\u003eLightweight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003ctd\u003eCorrosion-resistant, non-conductive body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSunlight\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003eUV stabilised, suitable for direct sun\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor most domestic rooftop or outbuilding installations, either enclosure is suitable. The plastic WPPV is the most popular choice for domestic use: lighter, non-conductive and UV stabilised. The metal WMPV is preferred for more exposed commercial locations or where a higher level of mechanical protection is specified.\u003c\/p\u003e\n\u003ch2\u003e1-string vs 2-string — which do I need?\u003c\/h2\u003e\n\u003cp\u003eThe string count is how many independent PV string cables connect into the combiner box. On a typical domestic installation with a single MPPT inverter and one string of panels, a 1-string (1S1) unit is correct. For two strings — either into a single MPPT input, or into two independent MPPT inputs on a dual-tracker inverter — a 2-string (2S2) unit brings both string cables to one protected, organised connection point.\u003c\/p\u003e\n\u003ctable class=\"eh-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eModels\u003c\/th\u003e\n\u003cth\u003eTypical use\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1-string\u003c\/td\u003e\n\u003ctd\u003eWMPV-1S1 or WPPV-1S1\u003c\/td\u003e\n\u003ctd\u003eSingle string, 1 MPPT input — most domestic systems up to about 4kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2-string\u003c\/td\u003e\n\u003ctd\u003eWMPV-2S2 or WPPV-2S2\u003c\/td\u003e\n\u003ctd\u003eTwo strings — dual MPPT inverter, east\/west split array, or larger systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhere it fits in a solar installation\u003c\/h2\u003e\n\u003cp\u003eThe combiner box installs between the PV array output and the inverter's DC input terminals. It is typically mounted on the external wall near where the string cables enter the building, in the roof space, or next to the inverter. All four models are IP65 rated for outdoor installation.\u003c\/p\u003e\n\u003cdiv class=\"eh-warn\"\u003e\n\u003cstrong\u003eDC protection is only half of the picture.\u003c\/strong\u003e On the AC side of the inverter, a Type 2 AC SPD at the consumer unit protects the inverter's grid connection. The combiner box DC SPD and the AC consumer unit SPD together provide complete surge protection for the full PV installation. See \u003ca href=\"\/pages\/surge-protection-solar-heat-pumps\"\u003esurge protection for solar and heat pumps\u003c\/a\u003e.\u003c\/div\u003e\n\u003ch2\u003eFull specifications\u003c\/h2\u003e\n\u003ctable class=\"eh-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eWMPV-1S1 \/ WPPV-1S1\u003c\/th\u003e\n\u003cth\u003eWMPV-2S2 \/ WPPV-2S2\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax DC voltage\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eString inputs \/ outputs\u003c\/td\u003e\n\u003ctd\u003e1 in \/ 1 out\u003c\/td\u003e\n\u003ctd\u003e2 in \/ 2 out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax current per string\u003c\/td\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003ctd\u003e32A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC isolator rating\u003c\/td\u003e\n\u003ctd\u003e45A\u003c\/td\u003e\n\u003ctd\u003e45A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eString fuse rating\u003c\/td\u003e\n\u003ctd\u003e15A per string\u003c\/td\u003e\n\u003ctd\u003e15A per string\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSPD type\u003c\/td\u003e\n\u003ctd\u003eType 2 DC, 20\/40kA\u003c\/td\u003e\n\u003ctd\u003eType 2 DC, 20\/40kA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSPD voltage rating\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003ctd\u003e1000V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure rating\u003c\/td\u003e\n\u003ctd\u003eIP65 IK10\u003c\/td\u003e\n\u003ctd\u003eIP65 IK10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure material\u003c\/td\u003e\n\u003ctd\u003eMetal (WMPV) \/ Polycarbonate (WPPV)\u003c\/td\u003e\n\u003ctd\u003eMetal (WMPV) \/ Polycarbonate (WPPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable entry\u003c\/td\u003e\n\u003ctd\u003eCable glands — maintain IP65\u003c\/td\u003e\n\u003ctd\u003eCable glands — maintain IP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eWall-mounted, surface fix\u003c\/td\u003e\n\u003ctd\u003eWall-mounted, surface fix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eEN 61439-2 (metal) \/ EN 61439-3 (plastic)\u003c\/td\u003e\n\u003ctd\u003eEN 61439-2 (metal) \/ EN 61439-3 (plastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable for\u003c\/td\u003e\n\u003ctd\u003eDomestic and light commercial PV\u003c\/td\u003e\n\u003ctd\u003eDomestic and light commercial PV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAlso available: standalone DC SPDs (WSPV1000 \/ WSPV600) for custom combiner arrangements. \u003ca href=\"\/collections\/wced-products\"\u003eView the full WCED range\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdiv class=\"eh-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a combiner box or can I connect directly to the inverter?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eFor a single-string system, connecting directly to the inverter is possible, but you lose the DC disconnect point, the string fusing and the surge protection that a combiner box provides. Most installers specify a combiner box as standard practice. The DC disconnect is particularly valuable for safe servicing without covering panels or disconnecting at module connectors.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs a 1000V DC combiner box suitable for all domestic solar inverters?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eYes. Most domestic string inverters operate at DC string voltages between 200V and 600V under normal conditions, well within the 1000V DC rating of these units. The 1000V rating provides a safe margin and future-proofs the installation for higher-voltage string configurations.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat fuse rating should I use per string?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eThe combiner boxes are supplied with 15A gPV fuses per string as standard, suitable for most domestic PV strings with panels rated up to around 10–11A short circuit current (Isc). If your panels have a higher Isc, check the panel datasheet: the fuse rating should exceed the panel Isc but not exceed the string cable rating. Always verify against the panel manufacturer's datasheet.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this combiner box be installed outdoors?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eYes. All four models are IP65 rated and suitable for outdoor installation. Cable glands must be correctly fitted and sized for the cable diameter to maintain the IP65 rating. The polycarbonate WPPV models use UV-stabilised polycarbonate suitable for direct sunlight. The metal WMPV models should have any cut or exposed edges treated to prevent corrosion in coastal or high-humidity environments.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes a DC combiner box SPD replace the need for AC surge protection?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eNo. They protect different parts of the system. The DC combiner box SPD protects against surges arriving via the PV string cables from the array. An AC Type 2 SPD at the consumer unit protects the inverter's AC output connection and the rest of the property's circuits. Both are needed for complete surge protection on a solar installation. See our \u003ca href=\"\/pages\/surge-protection-solar-heat-pumps\"\u003esurge protection for solar and heat pumps\u003c\/a\u003e guide.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the difference between the metal and plastic combiner box at the same string count?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eBoth variants at the same string count contain identical internal components — the same DC isolator, fuses and SPD. The difference is purely the enclosure: steel for the metal versions, UV-stabilised polycarbonate for the plastic. Both are IP65 IK10. Choose metal where higher mechanical robustness or a more commercial look is required; choose plastic for typical domestic wall-mount applications where weight and non-conductivity are advantages.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRelated products and resources\u003c\/h2\u003e\n\u003cdiv class=\"eh-links\"\u003e\n\u003ca href=\"\/products\/wced-solar-pv-consumer-unit-bi-directional-rcbo-isolator-kwh-meter\"\u003eSolar PV Consumer Unit (AC Side)\u003c\/a\u003e \u003ca href=\"\/pages\/dc-surge-protection-1000v\"\u003eDC Surge Protection (1000V)\u003c\/a\u003e \u003ca href=\"\/pages\/surge-protection-solar-heat-pumps\"\u003eSurge Protection for Solar\u003c\/a\u003e \u003ca href=\"\/pages\/ip40-vs-ip65-enclosures-explained\"\u003eIP40 vs IP65 Explained\u003c\/a\u003e \u003ca href=\"\/pages\/product-finder\"\u003eProduct Finder\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"eh-badge\"\u003e1000V DC\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003e1 \u0026amp; 2 String\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003eMetal \u0026amp; Plastic IP65\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003e45A DC Isolator\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003eType 2 DC SPD\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003e15A String Fuses\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003eDomestic \u0026amp; Light Commercial\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003eUK Stock\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"WCED","offers":[{"title":"1 String \/ Metal IP65","offer_id":58008423072131,"sku":"WMPV-1S1","price":72.0,"currency_code":"GBP","in_stock":true},{"title":"1 String \/ Plastic IP65","offer_id":58008423104899,"sku":"WPPV-1S1","price":68.0,"currency_code":"GBP","in_stock":true},{"title":"2 String \/ Metal IP65","offer_id":58008423137667,"sku":"WMPV-2S2","price":110.0,"currency_code":"GBP","in_stock":true},{"title":"2 String \/ Plastic IP65","offer_id":58008423170435,"sku":"WPPV-2S2","price":115.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/7545\/files\/1000V-DC-Dual-String-PV-Protection-with-Integrated-Isolator-Surge-Protection-1-600x600.jpg?v=1778276523"},{"product_id":"wced-type-b-rcd","title":"WCED Type B RCD | 2 \u0026 4 Pole, 25–63A, 30mA | EcoHarmony","description":"\u003c!-- ============================================================\n     PRODUCT PAGE: WCED Type B RCD\n     URL handle: wced-type-b-rcd\n     Meta title: WCED Type B RCD | 2 \u0026 4 Pole, 25–63A, 30mA | EcoHarmony\n     Meta description: WCED Type B RCDs for EV charger, heat pump and inverter installations. 2-pole and 4-pole, 25A to 63A, 30mA. IEC\/EN 62423 compliant. DIN rail mount. UK stock.\n\n     SHOPIFY VARIANTS TO CREATE:\n     Variant 1:  2 Pole 25A  — SKU: WEV225B-030 — Price: £95.00 ex VAT\n     Variant 2:  2 Pole 40A  — SKU: WEV240B-030 — Price: £95.00 ex VAT\n     Variant 3:  2 Pole 63A  — SKU: WEV263B-030 — Price: £95.00 ex VAT\n     Variant 4:  4 Pole 25A  — SKU: WEV425B-030 — Price: £119.00 ex VAT\n     Variant 5:  4 Pole 40A  — SKU: WEV440B-030 — Price: £119.00 ex VAT\n     Variant 6:  4 Pole 63A  — SKU: WEV463B-030 — Price: £119.00 ex VAT\n     ============================================================ --\u003e\n\n\u003cstyle\u003e\n  .eh-product{font-family:sans-serif;color:#1a1a1a;line-height:1.7;max-width:860px;font-size:16px;}\n  .eh-product h2{font-size:20px;font-weight:600;margin:28px 0 8px;border-bottom:2px solid #1D9E75;padding-bottom:5px;color:#085041;}\n  .eh-product h3{font-size:17px;font-weight:600;margin:20px 0 5px;color:#1a1a1a;}\n  .eh-product p{margin:8px 0;font-size:16px;}\n  .eh-product ul{margin:6px 0 14px 22px;}\n  .eh-product li{margin:5px 0;font-size:16px;}\n  .eh-callout{background:#E1F5EE;border-left:4px solid #1D9E75;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-callout strong{color:#085041;}\n  .eh-warn{background:#FAEEDA;border-left:4px solid #BA7517;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-specs{width:100%;border-collapse:collapse;margin:14px 0;}\n  .eh-specs th{background:#085041;color:#fff;padding:8px 12px;text-align:left;font-size:15px;}\n  .eh-specs td{padding:8px 12px;border-bottom:1px solid #e0e0e0;font-size:15px;}\n  .eh-specs tr:nth-child(even) td{background:#f5f5f5;}\n  .eh-compare{width:100%;border-collapse:collapse;margin:14px 0;}\n  .eh-compare th{background:#085041;color:#fff;padding:8px 12px;text-align:left;font-size:15px;}\n  .eh-compare td{padding:8px 12px;border-bottom:1px solid #e0e0e0;font-size:15px;}\n  .eh-compare tr:nth-child(even) td{background:#f5f5f5;}\n  .eh-faq{margin:16px 0;}\n  .eh-faq details{border:1px solid #e0e0e0;border-radius:6px;margin:8px 0;}\n  .eh-faq summary{padding:12px 16px;font-weight:600;cursor:pointer;font-size:16px;color:#085041;}\n  .eh-faq details[open] summary{border-bottom:1px solid #e0e0e0;}\n  .eh-faq .faq-body{padding:12px 16px;font-size:16px;line-height:1.7;}\n  .eh-links{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}\n  .eh-links a{background:#085041;color:#fff;padding:7px 14px;border-radius:4px;text-decoration:none;font-size:15px;}\n  .eh-links a:hover{background:#1D9E75;}\n  .eh-badge{display:inline-block;background:#E1F5EE;color:#085041;padding:4px 11px;border-radius:20px;font-size:13px;font-weight:600;margin:2px;}\n\u003c\/style\u003e\n\n\u003cdiv class=\"eh-product\"\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eWCED Type B RCD\u003c\/strong\u003e provides residual current protection against AC, pulsating DC, and smooth DC fault currents — making it the correct choice for EV charger installations, heat pump circuits, inverter-driven loads, UPS systems, and frequency converters where standard Type A or Type AC devices may not provide sufficient protection.\u003c\/p\u003e\n\n  \u003cp\u003eAvailable in 2-pole (single-phase) and 4-pole (three-phase) configurations, with current ratings of 25A, 40A, and 63A. All variants are 30mA sensitivity and DIN rail mountable.\u003c\/p\u003e\n\n  \u003cdiv class=\"eh-callout\"\u003e\n    \u003cstrong\u003eCorrect protection for modern EV charger installations.\u003c\/strong\u003e Where an EV charger or associated equipment can produce smooth DC residual currents, a Type B RCD is required under IEC\/EN 62423. Type A devices detect pulsating DC only and may not provide adequate protection in these scenarios. Your installer will confirm which type applies to your installation.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhich variant do you need?\u003c\/h2\u003e\n\n  \u003ctable class=\"eh-compare\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003ePoles\u003c\/th\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003cth\u003eTypical use\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2 Pole 25A\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eSingle phase\u003c\/td\u003e\n\u003ctd\u003eSmaller single-phase EV charger or heat pump circuits\u003c\/td\u003e\n\u003ctd\u003eWEV225B-030\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2 Pole 40A\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eSingle phase\u003c\/td\u003e\n\u003ctd\u003eStandard 7kW single-phase EV charger installations\u003c\/td\u003e\n\u003ctd\u003eWEV240B-030\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2 Pole 63A\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eSingle phase\u003c\/td\u003e\n\u003ctd\u003eHigher-load single-phase circuits, submain protection\u003c\/td\u003e\n\u003ctd\u003eWEV263B-030\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e4 Pole 25A\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eThree phase\u003c\/td\u003e\n\u003ctd\u003eSmaller three-phase inverter or converter circuits\u003c\/td\u003e\n\u003ctd\u003eWEV425B-030\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e4 Pole 40A\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eThree phase\u003c\/td\u003e\n\u003ctd\u003eThree-phase EV chargers, solar inverters, UPS\u003c\/td\u003e\n\u003ctd\u003eWEV440B-030\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e4 Pole 63A\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eThree phase\u003c\/td\u003e\n\u003ctd\u003eHigher-load three-phase commercial EV installations\u003c\/td\u003e\n\u003ctd\u003eWEV463B-030\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003cdiv class=\"eh-warn\"\u003e\n    \u003cstrong\u003e2-pole vs 4-pole.\u003c\/strong\u003e Use the 2-pole variant for single-phase (230V) installations. Use the 4-pole variant for three-phase (400V) installations where all three phases plus neutral require monitoring. If you are unsure which applies, consult your installer or contact us.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\n  \u003ctable class=\"eh-specs\"\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003e2 Pole variants\u003c\/th\u003e\n\u003cth\u003e4 Pole variants\u003c\/th\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePoles\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCurrent ratings available\u003c\/td\u003e\n\u003ctd\u003e25A, 40A, 63A\u003c\/td\u003e\n\u003ctd\u003e25A, 40A, 63A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eTripping sensitivity\u003c\/td\u003e\n\u003ctd\u003e30mA\u003c\/td\u003e\n\u003ctd\u003e30mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRCD type\u003c\/td\u003e\n\u003ctd\u003eType B\u003c\/td\u003e\n\u003ctd\u003eType B\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eFault current detection\u003c\/td\u003e\n\u003ctd\u003eAC, pulsating DC, smooth DC\u003c\/td\u003e\n\u003ctd\u003eAC, pulsating DC, smooth DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eAC frequency range\u003c\/td\u003e\n\u003ctd\u003eUp to 1000Hz\u003c\/td\u003e\n\u003ctd\u003eUp to 1000Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRated voltage\u003c\/td\u003e\n\u003ctd\u003e230V\u003c\/td\u003e\n\u003ctd\u003e400V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e35mm DIN rail\u003c\/td\u003e\n\u003ctd\u003e35mm DIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eIEC\/EN 62423\u003c\/td\u003e\n\u003ctd\u003eIEC\/EN 62423\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWCED\u003c\/td\u003e\n\u003ctd\u003eWCED\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch2\u003eTypical applications\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEV charger installations\u003c\/strong\u003e — where the charger specification or inverter design requires Type B protection\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHeat pump circuits\u003c\/strong\u003e — variable frequency drives can produce smooth DC leakage requiring Type B detection\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSolar PV inverters\u003c\/strong\u003e — particularly transformerless inverters that can produce DC residual currents\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUPS systems\u003c\/strong\u003e — uninterruptible power supplies with DC bus circuits\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFrequency converters\u003c\/strong\u003e — industrial and commercial variable speed drives\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBuilding site power cabins\u003c\/strong\u003e — where mixed load types require comprehensive residual current protection\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eType A vs Type B — what is the difference?\u003c\/h2\u003e\n\n  \u003cp\u003eType A RCDs detect AC and pulsating DC residual currents. Type B RCDs detect all of the above \u003cem\u003eplus\u003c\/em\u003e smooth DC residual currents and AC currents at frequencies up to 1000Hz. For many modern EV chargers and inverter-driven loads, the equipment's internal power electronics can produce smooth DC leakage that a Type A device will not detect — making Type B the technically correct choice.\u003c\/p\u003e\n\n  \u003cp\u003eNot every EV charger installation requires Type B protection. The charger manufacturer's documentation will specify the required RCD type. If the documentation specifies Type A or Type AC, a Type A device is sufficient. If it specifies Type B, or if the charger contains a PFC stage or rectifier, Type B should be used.\u003c\/p\u003e\n\n  \u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n  \u003cdiv class=\"eh-faq\"\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDoes every EV charger need a Type B RCD?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eNo — it depends on the charger. Some EV chargers include internal DC fault protection (often called RDC-DD) which means a standard Type A RCD is sufficient upstream. Others, particularly those without internal DC protection or with specific inverter stages, require Type B. Always check the charger manufacturer's installation documentation and your installer will confirm the correct device. If in doubt, Type B provides a higher level of protection and is always acceptable where Type A is required.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat does 30mA tripping sensitivity mean?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003e30mA is the standard tripping threshold for personal protection — it will disconnect the circuit when residual current reaches 30 milliamps, which is below the threshold likely to cause a lethal electric shock in most circumstances. This is the standard sensitivity required for EV charger and domestic circuits under BS 7671.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I use a Type B RCD where a Type A is specified?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eYes. Type B provides a superset of the protection offered by Type A — it detects everything Type A detects, plus smooth DC currents. Using a Type B where Type A is specified is always technically acceptable, though it comes at a higher cost. Where the charger documentation specifies Type A, either type is compliant.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDoes this RCD include overcurrent protection?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eNo. This is a standalone RCD (RCCB) providing residual current protection only. It does not include overcurrent or short-circuit protection. A separate MCB or RCBO is required for overcurrent protection, or the circuit must be protected upstream by an appropriately rated MCB. See our \u003ca href=\"\/collections\/wced-products\"\u003efull WCED range\u003c\/a\u003e for compatible overcurrent protection devices and pre-fitted consumer units.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eIs this suitable for use in a pre-fitted consumer unit?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eThis is a standalone DIN rail module, not a pre-fitted unit. If you need a complete ready-to-connect solution with RCD, MCB or RCBO, and surge protection already assembled, see our \u003ca href=\"\/pages\/ev-charger-consumer-unit\"\u003epre-fitted EV charger consumer units\u003c\/a\u003e.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the difference between the 2-pole and 4-pole versions?\u003c\/summary\u003e\n      \u003cdiv class=\"faq-body\"\u003eThe 2-pole variant is for single-phase (230V) installations — it monitors the live and neutral conductors. The 4-pole variant is for three-phase (400V) installations — it monitors all three phase conductors plus neutral. Use 2-pole for standard domestic EV chargers and single-phase heat pumps. Use 4-pole for three-phase EV chargers (11–22kW), three-phase heat pumps, and commercial installations.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003ch2\u003eRelated products\u003c\/h2\u003e\n  \u003cdiv class=\"eh-links\"\u003e\n    \u003ca href=\"\/products\/pen-fault-detection-with-surge-protection\"\u003eSingle Phase PME Unit (IP65)\u003c\/a\u003e\n    \u003ca href=\"\/products\/3-phase-pme-40a-rcbo-surge-protection\"\u003e3-Phase PME Unit\u003c\/a\u003e\n    \u003ca href=\"\/pages\/ev-charger-consumer-unit\"\u003ePre-Fitted Consumer Units\u003c\/a\u003e\n    \u003ca href=\"\/collections\/wced-products\"\u003eAll WCED Products\u003c\/a\u003e\n    \u003ca href=\"\/pages\/product-finder\"\u003eProduct Finder\u003c\/a\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"margin-top:16px;\"\u003e\n    \u003cspan class=\"eh-badge\"\u003eType B RCD\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003e2 \u0026amp; 4 Pole\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003e25A \/ 40A \/ 63A\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003e30mA\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eDIN Rail\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eIEC\/EN 62423\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eEV Charger\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eHeat Pump\u003c\/span\u003e\n    \u003cspan class=\"eh-badge\"\u003eUK Stock\u003c\/span\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does every EV charger need a Type B RCD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No — it depends on the charger. Some EV chargers include internal DC fault protection (RDC-DD) which means a standard Type A RCD is sufficient. Others require Type B. Always check the charger manufacturer's installation documentation.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between a Type A and Type B RCD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Type A RCDs detect AC and pulsating DC residual currents. Type B RCDs detect all of the above plus smooth DC residual currents and AC currents up to 1000Hz. Type B provides a higher level of protection and is required where equipment can produce smooth DC leakage, such as some EV chargers, solar inverters and variable frequency drives.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What is the difference between the 2-pole and 4-pole Type B RCD?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"The 2-pole variant is for single-phase 230V installations and monitors live and neutral conductors. The 4-pole variant is for three-phase 400V installations and monitors all three phase conductors plus neutral.\"\n      }\n    },\n    {\n      \"@type\": \"Question\",\n      \"name\": \"Does the WCED Type B RCD include overcurrent protection?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"No. This is a standalone RCD providing residual current protection only. A separate MCB or RCBO is required for overcurrent protection.\"\n      }\n    }\n  ]\n}\n\u003c\/script\u003e","brand":"WCED","offers":[{"title":"2 \/ 25A","offer_id":58156928074115,"sku":"WEV225B-030","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"2 \/ 40A","offer_id":58156928106883,"sku":"WEV240B-030","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"2 \/ 63A","offer_id":58156928139651,"sku":"WEV263B-030","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"4 \/ 25A","offer_id":58156928172419,"sku":"WEV425B-030","price":119.0,"currency_code":"GBP","in_stock":true},{"title":"4 \/ 40A","offer_id":58156928205187,"sku":"WEV440B-030","price":119.0,"currency_code":"GBP","in_stock":true},{"title":"4 \/ 63A","offer_id":58156928237955,"sku":"WEV463B-030","price":119.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/7545\/files\/WEV240B-030_600x695_1254e478-c24a-45c9-b2cd-65724595c275.webp?v=1780145706"},{"product_id":"wced-solar-pv-consumer-unit-bi-directional-rcbo-isolator-kwh-meter","title":"WCED Solar PV Consumer Unit – 20A Bi-Directional RCBO, 32A Isolator \u0026 kWh Meter","description":"\u003c!-- ============================================================\n     PRODUCT: WCED Solar PV Consumer Unit – 20A Bi-Directional RCBO, 32A Isolator \u0026 kWh Meter\n     SKU: WME10-SOL1\n     Meta title:  Solar PV Consumer Unit – Bi-Directional RCBO, Isolator \u0026 kWh Meter | EcoHarmony\n     Meta desc:   Pre-fitted 10-module solar PV consumer unit with 20A bi-directional RCBO, 32A rotary isolator and kWh meter. Factory assembled for domestic solar. UK stock.\n     ============================================================ --\u003e\n\u003cstyle\u003e\n  .eh-product{font-family:sans-serif;color:#1a1a1a;line-height:1.7;max-width:860px;font-size:16px;}\n  .eh-product h2{font-size:20px;font-weight:600;margin:28px 0 8px;border-bottom:2px solid #1D9E75;padding-bottom:5px;color:#085041;}\n  .eh-product h3{font-size:17px;font-weight:600;margin:20px 0 5px;color:#1a1a1a;}\n  .eh-product p{margin:8px 0;font-size:16px;}\n  .eh-product ul{margin:6px 0 14px 22px;}\n  .eh-product li{margin:5px 0;font-size:16px;}\n  .eh-callout{background:#E1F5EE;border-left:4px solid #1D9E75;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-callout strong{color:#085041;}\n  .eh-warn{background:#FAEEDA;border-left:4px solid #BA7517;padding:14px 18px;border-radius:4px;margin:16px 0;font-size:16px;}\n  .eh-specs{width:100%;border-collapse:collapse;margin:14px 0;}\n  .eh-specs th{background:#085041;color:#fff;padding:8px 12px;text-align:left;font-size:15px;}\n  .eh-specs td{padding:8px 12px;border-bottom:1px solid #e0e0e0;font-size:15px;}\n  .eh-specs tr:nth-child(even) td{background:#f5f5f5;}\n  .eh-faq{margin:16px 0;}\n  .eh-faq details{border:1px solid #e0e0e0;border-radius:6px;margin:8px 0;}\n  .eh-faq summary{padding:12px 16px;font-weight:600;cursor:pointer;font-size:16px;color:#085041;}\n  .eh-faq details[open] summary{border-bottom:1px solid #e0e0e0;}\n  .eh-faq .faq-body{padding:12px 16px;font-size:16px;line-height:1.7;}\n  .eh-links{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0;}\n  .eh-links a{background:#085041;color:#fff;padding:7px 14px;border-radius:4px;text-decoration:none;font-size:15px;}\n  .eh-links a:hover{background:#1D9E75;}\n  .eh-badge{display:inline-block;background:#E1F5EE;color:#085041;padding:4px 11px;border-radius:20px;font-size:13px;font-weight:600;margin:2px;}\n\u003c\/style\u003e\n\u003cdiv class=\"eh-product\"\u003e\n\u003cp\u003eThis \u003cstrong\u003epre-fitted single-phase solar PV consumer unit\u003c\/strong\u003e comes ready-wired with a 20A bi-directional RCBO, a 32A rotary isolator and an integrated kWh meter, designed for domestic solar PV installations where the AC protection, isolation and metering need to sit in a single, neat board. It reduces installation time by arriving fully assembled — the installer simply mounts it, makes the incoming and outgoing connections, and the board is ready.\u003c\/p\u003e\n\u003cdiv class=\"eh-callout\"\u003e\n\u003cstrong\u003ePre-wired and ready to connect.\u003c\/strong\u003e All components are factory-assembled in a 10-module board, which reduces on-site wiring time and keeps the solar circuit protection, isolation and metering together in one place.\u003c\/div\u003e\n\u003cdiv class=\"eh-warn\"\u003e\n\u003cstrong\u003eSurge protection and PEN fault detection are not part of this unit.\u003c\/strong\u003e The specification covers the RCBO, rotary isolator and kWh meter only. For solar installations, a Type 2 AC surge protection device is recommended at the consumer unit, and a PME supply requires PEN fault detection under BS 7671. See our \u003ca href=\"\/pages\/surge-protection-solar-heat-pumps\"\u003esolar surge protection guide\u003c\/a\u003e and \u003ca href=\"\/pages\/what-is-pme-in-ev-charging\"\u003ePME guide\u003c\/a\u003e.\u003c\/div\u003e\n\u003ch2\u003eWhat's included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e20 A bi-directional RCBO — combined residual current and overcurrent protection, suitable for circuits where current can flow in both directions\u003c\/li\u003e\n\u003cli\u003e32 A rotary isolator — safe AC isolation of the solar circuit\u003c\/li\u003e\n\u003cli\u003eIntegrated kWh meter — measures energy through the solar circuit\u003c\/li\u003e\n\u003cli\u003e10-module single-phase board — factory assembled and ready to connect\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable class=\"eh-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply type\u003c\/td\u003e\n\u003ctd\u003eSingle-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBoard size\u003c\/td\u003e\n\u003ctd\u003e10 module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRCBO\u003c\/td\u003e\n\u003ctd\u003e20 A, bi-directional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolator\u003c\/td\u003e\n\u003ctd\u003e32 A rotary\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetering\u003c\/td\u003e\n\u003ctd\u003eIntegrated kWh meter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplied\u003c\/td\u003e\n\u003ctd\u003ePre-wired, factory assembled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable for\u003c\/td\u003e\n\u003ctd\u003eDomestic solar PV systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdiv class=\"eh-faq\"\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does pre-fitted or ready-wired mean?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eIt means the RCBO, isolator and kWh meter are already installed and wired inside the board when it arrives. The installer does not need to fit individual components — they simply mount the board, connect the incoming supply, and connect the solar circuit. This saves time on site, particularly when installing multiple systems.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy does a solar circuit need a bi-directional RCBO?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eOn a solar circuit, current can flow from the inverter towards the consumer unit rather than only from the supply to the load. A bi-directional RCBO is designed to protect correctly whichever way the current flows, so it can be connected to a generating circuit without the supply and load terminals being a concern.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the rotary isolator for?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eThe 32 A rotary isolator gives a clear, lockable-style point to disconnect the AC side of the solar system, making servicing, testing and maintenance of the inverter and circuit safer.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the kWh meter measure?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eThe integrated kWh meter records the energy passing through the solar circuit, so you can see how much the system has generated without fitting a separate meter.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this include surge protection or PEN fault detection?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eNo. This board provides RCBO protection, isolation and metering only. For complete solar surge protection you also need DC-side protection (see our \u003ca href=\"\/products\/wced-solar-pv-combiner-boxes-1000v-dc\"\u003esolar PV combiner boxes\u003c\/a\u003e) and AC-side protection at the consumer unit. For a PME supply you also need PEN fault detection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the 20 A RCBO right for my inverter?\u003c\/summary\u003e\n\u003cdiv class=\"faq-body\"\u003eCheck the inverter's maximum AC output current against the 20 A rating and the cable size being used. The protective device must be selected to suit the inverter and the cable on the circuit.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003ch2\u003eRelated products and resources\u003c\/h2\u003e\n\u003cdiv class=\"eh-links\"\u003e\n\u003ca href=\"\/products\/wced-solar-pv-combiner-boxes-1000v-dc\"\u003eSolar PV Combiner Boxes (DC)\u003c\/a\u003e \u003ca href=\"\/pages\/surge-protection-solar-heat-pumps\"\u003eSurge Protection for Solar\u003c\/a\u003e \u003ca href=\"\/pages\/dc-surge-protection-1000v\"\u003eDC Surge Protection\u003c\/a\u003e \u003ca href=\"\/pages\/product-finder\"\u003eProduct Finder\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan class=\"eh-badge\"\u003eSingle-Phase\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003ePre-Wired\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003e10 Module\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003e20A Bi-Directional RCBO\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003e32A Rotary Isolator\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003ekWh Meter\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003eDomestic Solar PV\u003c\/span\u003e \u003cspan class=\"eh-badge\"\u003eUK Stock\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"WCED","offers":[{"title":"Default Title","offer_id":62815625412995,"sku":"WME10-SOL1","price":85.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/7545\/files\/WCED-Whitecliffe-WME10-SOL1-Solar-Consumer-Unit-450x450.jpg?v=1791879672"},{"product_id":"wced-rotary-isolators","title":"WCED 4 Pole Rotary Isolator Switches 20A-125A","description":"\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;max-width:900px;margin:0 auto;color:#333;\"\u003e\n\u003ch1 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:34px;color:#14301f;margin:0 0 12px;font-weight:400;\"\u003eWCED 4 Pole Rotary Isolator Switches\u003c\/h1\u003e\n\u003cp style=\"font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;margin:0 0 14px;\"\u003eCompact 4 pole rotary isolators from the WCED WRS range, from 20A up to 125A for AC, plus 1000V DC versions for solar PV. A straightforward, positive-action way to isolate EV chargers, machinery, sub-boards and PV strings.\u003c\/p\u003e\n\u003cdiv style=\"background:#eef6f1;border-left:4px solid #1f7a4d;padding:14px 18px;border-radius:6px;margin:0 0 8px;font-family:'DM Sans',Arial,sans-serif;font-size:15px;color:#14301f;\"\u003e\n\u003cstrong\u003eTrade-friendly pricing.\u003c\/strong\u003e Technical support available from the WCED team.\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eWhy choose the WCED WRS range\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:0 0 8px;\"\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003e4 pole switching\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eBreaks all three phases and neutral together for three-phase circuits.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003e20A to 125A AC\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eSeven AC ratings so you can match the isolator to the circuit rather than over-spec.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003e1000V DC options\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003e32A and 40A DC versions for the DC side of solar PV systems.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eBuilt to a recognised standard\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eThe WRS series is specified to IEC \/ EN 60947-3 for switch-disconnectors.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eAC rotary isolators\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePart code\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eRating\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePoles\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eType\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWRS4P20\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e20A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eAC rotary isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWRS4P32\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e32A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eAC rotary isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWRS4P40\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e40A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eAC rotary isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWRS4P63\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e63A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eAC rotary isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWRS4P80\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e80A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eAC rotary isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWRS4P100\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e100A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eAC rotary isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWRS4P125\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e125A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eAC rotary isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eDC rotary isolators for solar PV\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePart code\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eRating\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eVoltage\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePoles\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWRS4P32DC\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e32A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e1000V DC\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWRS4P40DC\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e40A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e1000V DC\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eChoosing the right rating\u003c\/h2\u003e\n\u003cp style=\"font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;margin:0 0 14px;\"\u003ePick an isolator rated at or above the maximum current of the circuit it isolates. These are typical starting points:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eApplication\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eTypical current\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eSuggested part\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eSingle-phase 7kW EV charger\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e32A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWRS4P32 or WRS4P40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eThree-phase 22kW EV charger\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e32A per phase\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWRS4P32 or WRS4P40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eSmall sub-board or garage supply\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e40A to 63A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWRS4P40, WRS4P63\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eLarger sub-board or plant\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e80A to 125A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWRS4P80, WRS4P100, WRS4P125\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eSolar PV AC side (inverter output)\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eMatch inverter output\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eAC range, rated at or above inverter current\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eSolar PV DC side (strings)\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eUp to 32A or 40A, 1000V DC\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWRS4P32DC, WRS4P40DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;margin:0 0 14px;\"\u003eThese are guide figures only. Always size the isolator from the actual design current and the manufacturer data sheet.\u003c\/p\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eIsolator, circuit breaker or main switch?\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eDevice\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eWhat it does\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eProtects against overload or short circuit?\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eRotary isolator\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eManually disconnects a circuit so work can be done safely\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eMCB \/ RCBO\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eDisconnects automatically on a fault, and can be switched off by hand\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eMain switch\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eIsolates the whole installation at the incoming supply\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp style=\"font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;margin:0 0 14px;\"\u003eAn isolator is normally installed alongside a protective device, not instead of one. Eco Harmony also stocks WCED RCBOs, surge protection and PME fault detection units for the same installations.\u003c\/p\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eWhere they are used\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:0 0 8px;\"\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eEV charging\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eLocal isolation next to a wallbox or on a multi-charger supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eSolar PV\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eAC isolation at the inverter, and DC isolation on the string side.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eMachinery and plant\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eLock-off style isolation for maintenance.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eSub-boards\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eIncoming isolation on a sub-distribution board.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eData sheets\u003c\/h2\u003e\n\u003ca href=\"#\" style=\"font-family:'DM Sans',Arial,sans-serif;display:inline-block;background:#1f7a4d;color:#fff;text-decoration:none;padding:11px 20px;border-radius:8px;font-weight:700;font-size:14px;margin:0 10px 10px 0;\"\u003eDownload WRS data sheet (PDF)\u003c\/a\u003e\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhat is a rotary isolator used for?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eA rotary isolator is a manually operated switch that disconnects a circuit from its supply so the equipment downstream can be worked on safely. Common uses are EV charger isolation, solar PV AC and DC isolation, machinery, sub-boards and plant.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhy do these have 4 poles?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eA 4 pole isolator switches all three phases and the neutral together, which is what you want on a three-phase supply with a neutral. On a single-phase circuit it can still be used by wiring the poles in series or in pairs, depending on the installation.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhat is the difference between the AC and DC versions?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eDC current does not pass through zero like AC does, so an arc is harder to extinguish. The DC isolators (WRS4P32DC and WRS4P40DC) are built and rated for 1000V DC and are the ones to use on the DC side of a solar PV installation. Do not use an AC-rated isolator on a DC circuit.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhich amp rating should I choose?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003ePick a rating equal to or above the maximum load of the circuit it isolates. For a typical single EV charger, the 32A or 40A model is the usual fit. For board-level isolation, look at the 63A to 125A models.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eIs this a replacement for a circuit breaker?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eNo. An isolator disconnects, but it does not protect against overload or short circuit. It is installed alongside protective devices such as an MCB, RCBO or MCCB.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eCan I use an isolator outdoors?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eThat depends on the enclosure and its IP rating. Check the WCED data sheet for the model you choose, and fit it in a suitable weatherproof enclosure if it is going outside.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eDo I need an isolator for an EV charger?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eEvery circuit needs a means of isolation, and many installers add a local isolator next to the charger so it can be switched off for servicing. Your electrician will confirm what the installation requires.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWho should install it?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eInstallation should be carried out by a competent electrician in line with BS 7671 and the manufacturer instructions.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a rotary isolator used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A rotary isolator is a manually operated switch that disconnects a circuit from its supply so the equipment downstream can be worked on safely. Common uses are EV charger isolation, solar PV AC and DC isolation, machinery, sub-boards and plant.\"}}, {\"@type\": \"Question\", \"name\": \"Why do these have 4 poles?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A 4 pole isolator switches all three phases and the neutral together, which is what you want on a three-phase supply with a neutral. On a single-phase circuit it can still be used by wiring the poles in series or in pairs, depending on the installation.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between the AC and DC versions?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"DC current does not pass through zero like AC does, so an arc is harder to extinguish. The DC isolators (WRS4P32DC and WRS4P40DC) are built and rated for 1000V DC and are the ones to use on the DC side of a solar PV installation. Do not use an AC-rated isolator on a DC circuit.\"}}, {\"@type\": \"Question\", \"name\": \"Which amp rating should I choose?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Pick a rating equal to or above the maximum load of the circuit it isolates. For a typical single EV charger, the 32A or 40A model is the usual fit. For board-level isolation, look at the 63A to 125A models.\"}}, {\"@type\": \"Question\", \"name\": \"Is this a replacement for a circuit breaker?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. An isolator disconnects, but it does not protect against overload or short circuit. It is installed alongside protective devices such as an MCB, RCBO or MCCB.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use an isolator outdoors?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"That depends on the enclosure and its IP rating. Check the WCED data sheet for the model you choose, and fit it in a suitable weatherproof enclosure if it is going outside.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need an isolator for an EV charger?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Every circuit needs a means of isolation, and many installers add a local isolator next to the charger so it can be switched off for servicing. Your electrician will confirm what the installation requires.\"}}, {\"@type\": \"Question\", \"name\": \"Who should install it?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Installation should be carried out by a competent electrician in line with BS 7671 and the manufacturer instructions.\"}}]}\u003c\/script\u003e","brand":"WCED","offers":[{"title":"AC \/ 20A","offer_id":62837588885891,"sku":"WRS4P20","price":12.95,"currency_code":"GBP","in_stock":true},{"title":"AC \/ 32A","offer_id":62837588918659,"sku":"WRS4P32","price":13.95,"currency_code":"GBP","in_stock":true},{"title":"AC \/ 40A","offer_id":62837588951427,"sku":"WRS4P40","price":16.95,"currency_code":"GBP","in_stock":true},{"title":"AC \/ 63A","offer_id":62837588984195,"sku":"WRS4P63","price":21.95,"currency_code":"GBP","in_stock":true},{"title":"AC \/ 80A","offer_id":62837589016963,"sku":"WRS4P80","price":27.95,"currency_code":"GBP","in_stock":true},{"title":"AC \/ 100A","offer_id":62837589049731,"sku":"WRS4P100","price":48.95,"currency_code":"GBP","in_stock":true},{"title":"AC \/ 125A","offer_id":62837589082499,"sku":"WRS4P125","price":51.95,"currency_code":"GBP","in_stock":true},{"title":"DC (1000V) \/ 32A","offer_id":62837589115267,"sku":"WRS4P32DC","price":27.95,"currency_code":"GBP","in_stock":true},{"title":"DC (1000V) \/ 40A","offer_id":62837589148035,"sku":"WRS4P40DC","price":31.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/7545\/files\/WRS4P80-scaled-450x642.png?v=1792143553"},{"product_id":"wced-changeover-switches","title":"WCED Manual Changeover Switches 20A-125A","description":"\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;max-width:900px;margin:0 auto;color:#333;\"\u003e\n\u003ch1 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:34px;color:#14301f;margin:0 0 12px;font-weight:400;\"\u003eWCED Manual Changeover Switches\u003c\/h1\u003e\n\u003cp style=\"font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;margin:0 0 14px;\"\u003eManual changeover switches from WCED for switching a load between two supplies, such as mains and generator. Weatherproof IP66 3 pole units from 20A to 63A, and 125A units supplied bare or in a mini or metal enclosure.\u003c\/p\u003e\n\u003cdiv style=\"background:#eef6f1;border-left:4px solid #1f7a4d;padding:14px 18px;border-radius:6px;margin:0 0 8px;font-family:'DM Sans',Arial,sans-serif;font-size:15px;color:#14301f;\"\u003e\n\u003cstrong\u003eTrade-friendly pricing.\u003c\/strong\u003e Technical support available from the WCED team.\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eWhy choose WCED changeover switches\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:0 0 8px;\"\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eTwo supplies, one load\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eSelect between mains and an alternative source with a single handle.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eIP66 3 pole range\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003e20A, 25A, 32A and 63A units rated IP66 for outdoor and damp locations.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003e125A options\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eBare switch, mini enclosure or metal enclosure to suit the installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eSimple to fit\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eNo tools needed to operate, so it is easy for the end user to use.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003e3 pole IP66 changeover switches\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePart code\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eRating\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePoles\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eProtection\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWCOS3P20\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e20A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e3\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWCOS3P25\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e25A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e3\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWCOS3P32\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e32A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e3\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWCOS3P63\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e63A\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e3\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003e125A changeover switches\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePart code\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eDescription\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eContacts\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWCOS125\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e125A changeover switch, bare\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e2NO 2NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWMECOS125\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e125A changeover switch in 4 module mini enclosure\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003e2NO 2NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWMECOS125-L\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e125A changeover switch in 4 module metal enclosure\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e2NO 2NC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003e3 pole or 125A: which do I need?\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003e\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eWCOS3P range (20A to 63A)\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003e125A range\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003ePoles\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e3 pole\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003e2NO 2NC contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eProtection\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eIP66\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eBare switch, mini enclosure or metal enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eBest for\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eSmaller circuits: a shed, garage, EV supply or standby circuit\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWhole-property or larger sub-board changeover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003ePart codes\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWCOS3P20, WCOS3P25, WCOS3P32, WCOS3P63\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWCOS125, WMECOS125, WMECOS125-L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eChoosing between the 125A options\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;margin:0 0 8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003ePart code\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eSupplied as\u003c\/th\u003e\n\u003cth style=\"font-family:'DM Sans',Arial,sans-serif;text-align:left;padding:10px 12px;background:#1f7a4d;color:#fff;font-size:14px;white-space:nowrap;\"\u003eChoose it when\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWCOS125\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eSwitch only\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eYou are fitting it into your own enclosure or board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eWMECOS125\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eSwitch in a 4 module mini enclosure\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#eef6f1;\"\u003eYou want a compact, ready-to-fit unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eWMECOS125-L\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eSwitch in a 4 module metal enclosure\u003c\/td\u003e\n\u003ctd style=\"font-family:'DM Sans',Arial,sans-serif;padding:10px 12px;font-size:14px;color:#222;border-bottom:1px solid #d5e5db;background:#fff;\"\u003eYou want a metal enclosure for a more robust installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eBefore you fit one\u003c\/h2\u003e\n\u003cp style=\"font-family:'DM Sans',Arial,sans-serif;font-size:16px;line-height:1.7;color:#333;margin:0 0 14px;\"\u003eA changeover switch only selects between supplies. It does not protect the circuit, so it sits alongside the usual protective devices. Whether the neutral needs to be switched depends on the supplies and the earthing arrangement, so confirm the wiring design with your electrician before ordering. Eco Harmony also stocks WCED RCBOs, surge protection and distribution boards to go with it.\u003c\/p\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eTypical applications\u003c\/h2\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:0 0 8px;\"\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eGenerator backup\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eKeep the generator and the mains from feeding the load together.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eGarages and workshops\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eSwitch an outbuilding between supplies.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eStandby supplies\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eSelect between a primary and a standby feed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#eef6f1;border:1px solid #d5e5db;border-radius:10px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-weight:700;color:#1f7a4d;font-size:15px;margin-bottom:4px;\"\u003eMaintenance switching\u003c\/div\u003e\n\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;font-size:14px;line-height:1.55;color:#333;\"\u003eMove a load to an alternative supply while work is done.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eData sheets\u003c\/h2\u003e\n\u003ca href=\"#\" style=\"font-family:'DM Sans',Arial,sans-serif;display:inline-block;background:#1f7a4d;color:#fff;text-decoration:none;padding:11px 20px;border-radius:8px;font-weight:700;font-size:14px;margin:0 10px 10px 0;\"\u003eDownload changeover data sheet (PDF)\u003c\/a\u003e\u003ch2 style=\"font-family:'DM Serif Display',Georgia,serif;font-size:26px;color:#14301f;margin:36px 0 12px;font-weight:400;\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhat does a changeover switch do?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eA manual changeover switch lets you select between two supplies, for example mains and a generator, and prevents both being connected to the load at the same time. You turn the handle to choose the feed.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhat is the difference between a changeover switch and an isolator?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eAn isolator simply opens and closes one circuit. A changeover switch selects one of two sources for a load, with an off position in between on most models. They are not interchangeable.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eCan I use one to connect a generator to my home?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eA changeover switch is the usual way to keep a generator and the mains from feeding the same circuit, but the installation as a whole still has to comply with BS 7671, including earthing arrangements and any notification to the network operator. Use a competent electrician.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhat do WCOS125, WMECOS125 and WMECOS125-L include?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eWCOS125 is the 125A 2NO 2NC switch on its own. WMECOS125 is the same switch fitted in a 4 module mini enclosure. WMECOS125-L is the same switch in a 4 module metal enclosure.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhat does IP66 mean on the WCOS3P range?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eIP66 is a high level of protection against dust and powerful water jets, so the 3 pole WCOS3P units are suited to outdoor or damp locations such as an external wall or garage.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eDo I need a 3 pole or a 4 pole changeover switch?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eIt depends on whether the neutral has to be switched, which is set by the supplies and the earthing arrangement. Ask your electrician to confirm before you order.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #d5e5db;border-radius:10px;margin:0 0 10px;background:#fff;\"\u003e\u003csummary style=\"font-family:'DM Sans',Arial,sans-serif;cursor:pointer;padding:14px 18px;font-weight:700;font-size:15px;color:#14301f;\"\u003eWhich rating should I choose?\u003c\/summary\u003e\u003cdiv style=\"font-family:'DM Sans',Arial,sans-serif;padding:0 18px 16px;font-size:15px;line-height:1.65;color:#333;\"\u003eChoose a rating equal to or above the maximum load on the circuit. For smaller circuits such as a shed, garage or EV supply, the 20A to 63A 3 pole units are the usual choice. The 125A units suit whole-property changeover.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does a changeover switch do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A manual changeover switch lets you select between two supplies, for example mains and a generator, and prevents both being connected to the load at the same time. You turn the handle to choose the feed.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between a changeover switch and an isolator?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"An isolator simply opens and closes one circuit. A changeover switch selects one of two sources for a load, with an off position in between on most models. 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WMECOS125-L is the same switch in a 4 module metal enclosure.\"}}, {\"@type\": \"Question\", \"name\": \"What does IP66 mean on the WCOS3P range?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"IP66 is a high level of protection against dust and powerful water jets, so the 3 pole WCOS3P units are suited to outdoor or damp locations such as an external wall or garage.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need a 3 pole or a 4 pole changeover switch?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"It depends on whether the neutral has to be switched, which is set by the supplies and the earthing arrangement. Ask your electrician to confirm before you order.\"}}, {\"@type\": \"Question\", \"name\": \"Which rating should I choose?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Choose a rating equal to or above the maximum load on the circuit. For smaller circuits such as a shed, garage or EV supply, the 20A to 63A 3 pole units are the usual choice. The 125A units suit whole-property changeover.\"}}]}\u003c\/script\u003e","brand":"WCED","offers":[{"title":"3 Pole IP66 \/ 20A","offer_id":62837687419267,"sku":"WCOS3P20","price":10.07,"currency_code":"GBP","in_stock":true},{"title":"3 Pole IP66 \/ 25A","offer_id":62837687452035,"sku":"WCOS3P25","price":11.42,"currency_code":"GBP","in_stock":true},{"title":"3 Pole IP66 \/ 32A","offer_id":62837687484803,"sku":"WCOS3P32","price":13.27,"currency_code":"GBP","in_stock":true},{"title":"3 Pole IP66 \/ 63A","offer_id":62837687517571,"sku":"WCOS3P63","price":19.68,"currency_code":"GBP","in_stock":true},{"title":"125A Switch Only \/ 125A","offer_id":62837687583107,"sku":"WCOS125","price":7.57,"currency_code":"GBP","in_stock":true},{"title":"125A Mini Enclosure \/ 125A","offer_id":62837687615875,"sku":"WMECOS125","price":9.55,"currency_code":"GBP","in_stock":true},{"title":"125A Metal Enclosure \/ 125A","offer_id":62837687648643,"sku":"WMECOS125-L","price":13.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1033\/7545\/files\/WCOS125-450x515.png?v=1792142900"}],"url":"https:\/\/ecoharmony.co.uk\/collections\/solar-pv-protection-switching.oembed","provider":"EcoHarmony","version":"1.0","type":"link"}