{"product_id":"solaredge-split-core-current-transformer-for-energy-meter-100a-250a-1000a","title":"SolarEdge Split-Core Current Transformer for Energy Meter — 100A \/ 250A \/ 1000A","description":"\u003c!-- SEO Product Name: SolarEdge Split-Core Current Transformer for Energy Meter — 100A \/ 250A \/ 1000A (SE-CT-SPL-100A-A \/ 250A-A \/ 1000A-A) --\u003e\n\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#1a1a1a;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\n  \u003c!-- ── INTRO ─────────────────────────────────────────────────────── --\u003e\n  \u003cp style=\"margin:0 0 18px;\"\u003e\n    SolarEdge \u003cstrong\u003eSplit-Core Current Transformers (CTs)\u003c\/strong\u003e are the required accessory for the SolarEdge Energy Meter with Modbus Connection (SE-WND-3Y400-MB-K2). They provide a \u003cstrong\u003esimple, non-intrusive way to measure current flow\u003c\/strong\u003e on each phase without disconnecting existing cables — the split-core design clamps around the live conductor. Available in \u003cstrong\u003e100 A, 250 A, and 1000 A\u003c\/strong\u003e ratings to cover residential and commercial supply sizes. Each CT outputs \u003cstrong\u003e333 mVac at rated current\u003c\/strong\u003e, achieving \u003cstrong\u003e±1% accuracy\u003c\/strong\u003e across the full 1%–100% of rated current range. \u003cstrong\u003eOne CT is required per phase\u003c\/strong\u003e — one for single-phase, three for three-phase installations.\n  \u003c\/p\u003e\n\n  \u003c!-- ── STAT STRIP ─────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;\"\u003e\n    \u003cdiv style=\"flex:1;min-width:120px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003eSplit-core\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eNo rewiring needed\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:120px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e±1%\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eAccuracy\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:120px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e333 mVac\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eOutput at rated current\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"flex:1;min-width:120px;background:#008377CF;color:#fff;border-radius:6px;padding:12px 10px;text-align:center;\"\u003e\n      \u003cdiv style=\"font-size:20px;font-weight:700;\"\u003e2.4 m\u003c\/div\u003e\n      \u003cdiv style=\"font-size:12px;margin-top:3px;\"\u003eLead wire length\u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- ── RED INSTALLER CALLOUT ─────────────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:10px 16px;margin-bottom:14px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Installer Note\u003c\/strong\u003e — CTs must only be installed and wired by a qualified electrician. \u003cstrong\u003eNever open CT leads while energised.\u003c\/strong\u003e Connect CT wiring to the meter before applying power. The CT circuit must not be left open-circuited — always connect to the meter terminal or short the leads before removing from the meter.\n  \u003c\/div\u003e\n\n  \u003c!-- ── AMBER COMPATIBILITY CALLOUT ───────────────────────────────── --\u003e\n  \u003cdiv style=\"border-left:4px solid #f59e0b;background:#fff8e1;padding:10px 16px;margin-bottom:22px;border-radius:0 6px 6px 0;\"\u003e\n    \u003cstrong style=\"color:#b45309;\"\u003e⚡ Compatibility\u003c\/strong\u003e — Compatible with the \u003cstrong\u003eSolarEdge Energy Meter SE-WND-3Y400-MB-K2\u003c\/strong\u003e and SE-MTR-3Y-400V-A. The \u003cstrong\u003e100A CT (SE-CT-SPL-100A-A) is a 1:1 replacement\u003c\/strong\u003e for the discontinued 50A (SE-ACT-0750-50) and 70A (SE-CTML-0350-070) models. Not compatible with third-party energy meters.\n  \u003c\/div\u003e\n\n  \u003c!-- ── VARIANT COMPARISON TABLE ──────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Choose Your Variant\n  \u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background:#005c54;color:#fff;\"\u003e\n        \u003cth style=\"padding:9px 14px;text-align:left;\"\u003eAttribute\u003c\/th\u003e\n        \u003cth style=\"padding:9px 14px;text-align:left;\"\u003e100 A\u003c\/th\u003e\n        \u003cth style=\"padding:9px 14px;text-align:left;\"\u003e250 A\u003c\/th\u003e\n        \u003cth style=\"padding:9px 14px;text-align:left;\"\u003e1000 A\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003ePart No\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSE-CT-SPL-100A-A\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSE-CT-SPL-250A-A\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSE-CT-SPL-1000A-A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer MPN\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSECT-SPL-100A-A\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSECT-SPL-250A-A\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSECT-SPL-1000A-A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eRated RMS Current\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e100 A\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e250 A\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e1000 A\u003c\/strong\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eInternal aperture (A × B)\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e16 × 16 mm\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e24 × 25 mm\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e52 × 52 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eExternal dimensions (C × D)\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e44 × 31 mm\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e46.2 × 65.4 mm\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e120 × 125 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eTypical application\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;\"\u003eResidential (60–100 A main fuse)\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;\"\u003eSmall commercial (up to 250 A incomer)\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;\"\u003eLarge commercial \/ industrial busbars\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── TECH SPEC TABLE ────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Technical Specifications (all variants)\n  \u003c\/div\u003e\n  \u003ctable style=\"width:100%;border-collapse:collapse;margin-bottom:22px;font-size:14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;width:45%;border-bottom:1px solid #c8e6e3;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSolarEdge Technologies\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCT Type\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSplit-core (clamp design) — no conductor disconnection required\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eOutput Voltage (at rated current)\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e333 mVac\u003c\/strong\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAccuracy (1%–100% of rated current)\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e\u003cstrong\u003e±1%\u003c\/strong\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eAccuracy Standards\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eIEEE C57.13, IEC 60044-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eGrid Frequency\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e50 Hz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eLead Wire Length\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003e2.4 m, twisted pair\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eBurden Resistor\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eBuilt-in — no shorting blocks needed\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eIndoor \/ Outdoor\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eIndoor use only\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#fff;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;border-bottom:1px solid #c8e6e3;\"\u003eCompatible Meters\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;border-bottom:1px solid #c8e6e3;\"\u003eSolarEdge SE-WND-3Y400-MB-K2, SE-MTR-3Y-400V-A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background:#f0faf9;\"\u003e\n        \u003ctd style=\"padding:9px 14px;font-weight:600;\"\u003eQuantity Required\u003c\/td\u003e\n        \u003ctd style=\"padding:9px 14px;\"\u003e\n\u003cstrong\u003e1 per phase\u003c\/strong\u003e (1× single-phase; 3× three-phase)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- ── FAQ ────────────────────────────────────────────────────────── --\u003e\n  \u003cdiv style=\"background:#008377CF;color:#fff;font-weight:600;font-size:15px;padding:10px 16px;border-radius:6px 6px 0 0;\"\u003e\n    Frequently Asked Questions\n  \u003c\/div\u003e\n  \u003cdiv style=\"border:1px solid #c8e6e3;border-top:none;border-radius:0 0 6px 6px;margin-bottom:8px;\"\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eWhich CT rating do I need?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eChoose a CT rated at or above the \u003cstrong\u003emaximum rated current of your main supply fuse or incomer MCB\/MCCB\u003c\/strong\u003e. For most UK residential properties with a 60–100 A main fuse, the \u003cstrong\u003e100 A CT (SE-CT-SPL-100A-A)\u003c\/strong\u003e is correct. For commercial premises with 101–250 A incomers use the \u003cstrong\u003e250 A\u003c\/strong\u003e; for large commercial or industrial sites with busbars over 250 A, use the \u003cstrong\u003e1000 A\u003c\/strong\u003e. Never fit a CT with a lower rating than the maximum possible current — it will saturate and give inaccurate readings.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails style=\"border-bottom:1px solid #c8e6e3;\"\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#fff;\"\u003eWill the CT fit around my existing cable without disconnecting it?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — the \u003cstrong\u003esplit-core (clamp) design\u003c\/strong\u003e opens and closes around the live conductor without breaking the circuit. Check the \u003cstrong\u003einternal aperture\u003c\/strong\u003e of your chosen CT against the outer diameter of the cable or busbar it needs to clamp around: 16×16 mm (100A), 24×25 mm (250A), or 52×52 mm (1000A). If the cable OD is borderline, use the next size up. The CT must be clamped on a \u003cstrong\u003esingle-core conductor only\u003c\/strong\u003e — never clamp around a multicore cable or the readings will cancel out.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary style=\"padding:13px 16px;cursor:pointer;font-weight:600;background:#f0faf9;\"\u003eIs the 100A CT backward-compatible with older 50A and 70A models?\u003c\/summary\u003e\n      \u003cdiv style=\"padding:11px 16px;font-size:14px;\"\u003eYes — SolarEdge updated the CT range and the \u003cstrong\u003e100A SECT-SPL-100A-A is a direct 1:1 replacement\u003c\/strong\u003e for the discontinued 50A (SE-ACT-0750-50) and 70A (SE-CTML-0350-070) CTs. The meter firmware automatically detects the CT rating, so no reconfiguration is required when replacing older models on existing installations.\u003c\/div\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"SolarEdge","offers":[{"title":"100A","offer_id":64053115060573,"sku":"SECT-SPL-100A-A","price":29.0,"currency_code":"GBP","in_stock":true},{"title":"250A","offer_id":64053115093341,"sku":"SECT-SPL-250A-A","price":33.0,"currency_code":"GBP","in_stock":true},{"title":"1000A","offer_id":64053115126109,"sku":"SECT-SPL-1000A-A","price":67.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Split-CoreCurrentTransformerforSolarEdgeEnergyMeterswithModbusConnection.jpg?v=1775020778","url":"https:\/\/qualityheating.co.uk\/products\/solaredge-split-core-current-transformer-for-energy-meter-100a-250a-1000a","provider":"AIZO Quality Heating","version":"1.0","type":"link"}