{"product_id":"sunsynk-wireless-ct-clamp-sunct-rs03-acure-inverter","title":"Sunsynk Wireless CT Clamp SUNCT-RS03 Acure Inverter","description":"\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.65;\"\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSunsynk Wireless CT (SUNCT-RS03)\u003c\/strong\u003e is a \u003cstrong\u003eLoRa-enabled current transformer clamp\u003c\/strong\u003e designed for the Sunsynk Acure inverter range. Traditional wired CT clamps must be cabled all the way back to the inverter — a route that can cross rooms, floors, and finished walls. The SUNCT-RS03 eliminates this entirely: clip the sensor around the incomer cable at your consumer unit, and it \u003cstrong\u003etransmits grid import\/export data wirelessly to the Acure\u003c\/strong\u003e over the inverter's built-in LoRa radio, \u003cstrong\u003etested to 200 metres\u003c\/strong\u003e. Up to \u003cstrong\u003etwo wireless CTs can be paired per Acure inverter\u003c\/strong\u003e. The result is a \u003cstrong\u003ecleaner, faster installation\u003c\/strong\u003e — no CT cable routes to plan, no conduit, no surface trunking.\u003c\/p\u003e\n\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:20px 0;\"\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003e200 m\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eTested LoRa Range\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003e2 max\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003ePer Acure Inverter\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003eZero\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eCT Signal Cables\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"flex:1;min-width:130px;background:#008377CF;color:#fff;border-radius:8px;padding:16px;text-align:center;\"\u003e\n    \u003cdiv style=\"font-size:24px;font-weight:700;\"\u003eAcure\u003c\/div\u003e\n    \u003cdiv style=\"font-size:12px;margin-top:4px;\"\u003eCompatible Range Only\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"border-left:4px solid #c0392b;background:#fff5f5;padding:14px 16px;border-radius:6px;margin:16px 0;\"\u003e\n  \u003cstrong style=\"color:#c0392b;\"\u003e⚠ Compatibility \u0026amp; Installation:\u003c\/strong\u003e The SUNCT-RS03 is \u003cstrong\u003eonly compatible with Sunsynk Acure series inverters\u003c\/strong\u003e (SunC1 and SunC2). It will not pair with other Sunsynk models. The CT clamp must be fitted on the \u003cstrong\u003elive conductor of the grid incomer\u003c\/strong\u003e — the cable between the meter\/cutout and the consumer unit. \u003cstrong\u003eDirectional arrow on the sensor must point toward the load (consumer unit) side.\u003c\/strong\u003e Never fit on neutral or earth conductors.\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #e67e22;background:#fffbf0;padding:14px 16px;border-radius:6px;margin:16px 0;\"\u003e\n  \u003cstrong style=\"color:#e67e22;\"\u003e⚡ Zero-Export Use:\u003c\/strong\u003e For \u003cstrong\u003ezero-export limiting\u003c\/strong\u003e, the CT must measure the \u003cstrong\u003egrid incomer\u003c\/strong\u003e (not a sub-circuit). An incorrectly positioned CT will feed the inverter erroneous import\/export values, causing incorrect throttling or unwanted grid export.\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #008377;background:#e6f4f3;padding:14px 16px;border-radius:6px;margin:16px 0;\"\u003e\n  \u003cstrong style=\"color:#005c54;\"\u003eℹ Installation Benefit:\u003c\/strong\u003e The SUNCT-RS03 is especially valuable where the \u003cstrong\u003einverter and consumer unit are in different locations\u003c\/strong\u003e — for example, a garage-mounted inverter with the house consumer unit in a hallway. No CT signal cable route is required between the two locations.\n\u003c\/div\u003e\n\n\u003cp style=\"color:#005c54;font-weight:700;font-size:15px;margin-top:24px;\"\u003eKey Features\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:14px;margin:20px 0;\"\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;border:1px solid #dde8e7;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"color:#008377;font-weight:700;font-size:15px;margin-bottom:8px;\"\u003eLoRa Wireless Transmission\u003c\/div\u003e\n    \u003cdiv style=\"font-size:14px;line-height:1.6;color:#333;\"\u003eUses the \u003cstrong\u003esub-GHz LoRa band\u003c\/strong\u003e built into every Acure inverter — the same radio as the Smartlynk switch. LoRa penetrates concrete floors and masonry walls far more effectively than Wi-Fi or Bluetooth, sustaining reliable readings in electrically noisy environments.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;border:1px solid #dde8e7;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"color:#005c54;font-weight:700;font-size:15px;margin-bottom:8px;\"\u003eBidirectional Grid Measurement\u003c\/div\u003e\n    \u003cdiv style=\"font-size:14px;line-height:1.6;color:#333;\"\u003eThe CT measures \u003cstrong\u003ebidirectional current on the grid incomer\u003c\/strong\u003e, giving the inverter real-time import and export data. This drives \u003cstrong\u003ezero-export limiting, self-consumption optimisation\u003c\/strong\u003e, and accurate energy accounting in Sunsynk Connect Pro.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;border:1px solid #dde8e7;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"color:#008377;font-weight:700;font-size:15px;margin-bottom:8px;\"\u003eFaster, Cleaner Installations\u003c\/div\u003e\n    \u003cdiv style=\"font-size:14px;line-height:1.6;color:#333;\"\u003eEliminating the CT signal cable \u003cstrong\u003esaves significant installation time\u003c\/strong\u003e and avoids the need to route cable between meter position and inverter — particularly valuable in multi-storey or open-plan properties where chasing or surface trunking is unacceptable.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;border:1px solid #dde8e7;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"color:#005c54;font-weight:700;font-size:15px;margin-bottom:8px;\"\u003eUp to Two CTs per Inverter\u003c\/div\u003e\n    \u003cdiv style=\"font-size:14px;line-height:1.6;color:#333;\"\u003eA single Acure supports \u003cstrong\u003etwo SUNCT-RS03 sensors simultaneously\u003c\/strong\u003e — useful where separate monitoring of an EV charge circuit or a sub-distribution board is required alongside the main incomer measurement.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;border:1px solid #dde8e7;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"color:#008377;font-weight:700;font-size:15px;margin-bottom:8px;\"\u003eEnables Zero-Export Control\u003c\/div\u003e\n    \u003cdiv style=\"font-size:14px;line-height:1.6;color:#333;\"\u003eMany DNOs and private landowners require \u003cstrong\u003ezero export to the grid\u003c\/strong\u003e. The SUNCT-RS03 gives the Acure the real-time grid signal it needs to throttle inverter output and \u003cstrong\u003eprevent any net export\u003c\/strong\u003e, satisfying G99 conditions where export is not permitted.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv style=\"flex:1;min-width:240px;border:1px solid #dde8e7;border-radius:8px;padding:18px;\"\u003e\n    \u003cdiv style=\"color:#005c54;font-weight:700;font-size:15px;margin-bottom:8px;\"\u003ePairs via Acure Touchscreen\u003c\/div\u003e\n    \u003cdiv style=\"font-size:14px;line-height:1.6;color:#333;\"\u003eRegistration is performed directly on the \u003cstrong\u003eAcure's colour touchscreen\u003c\/strong\u003e — no laptop or separate commissioning app is required on site. The sensor joins the inverter's LoRa network within seconds of pairing.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"overflow-x:auto;margin:24px 0;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-family:inherit;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#005c54;color:#fff;padding:10px 12px;text-align:left;font-size:14px;\"\u003eTechnical Specifications\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:8px 10px;font-size:13px;\"\u003eGENERAL\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f7fafa;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;width:46%;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eSUNCT-RS03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eCommunication Technology\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eLoRa (sub-GHz wireless)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7fafa;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eTested Communication Range\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003e200 m (line of sight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eMax. Sensors per Acure Inverter\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7fafa;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eCompatible Inverters\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eSunsynk Acure Series only (SunC1 and SunC2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eMeasurement Type\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eBidirectional AC current (grid import and export)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7fafa;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eRecommended Installation Position\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eLive conductor of grid incomer (between meter and consumer unit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eSignal Cable to Inverter Required\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eNone — fully wireless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f7fafa;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003ePairing Method\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eVia Acure inverter colour touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fff;\"\u003e\n\u003ctd style=\"padding:7px 10px;font-weight:600;font-size:13px;color:#333;border-bottom:1px solid #eee;\"\u003eWorks Alongside Smartlynk Switches?\u003c\/td\u003e\n\u003ctd style=\"padding:7px 10px;font-size:13px;color:#444;border-bottom:1px solid #eee;\"\u003eYes — shares the same Acure LoRa network (up to 2 CTs + 10 Smartlynks per inverter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin:24px 0;\"\u003e\n\u003cp style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:12px;\"\u003eFrequently Asked Questions\u003c\/p\u003e\n\n\u003cdetails style=\"border:1px solid #dde8e7;border-radius:6px;margin-bottom:8px;\"\u003e\n  \u003csummary style=\"background:#008377;color:#fff;padding:12px 14px;font-weight:600;cursor:pointer;border-radius:5px;font-size:14px;\"\u003eIs a wired CT included with the Acure inverter?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;font-size:14px;line-height:1.7;color:#333;\"\u003eThe Acure supports both wired and wireless CT connection. A wired CT is typically supplied with the inverter for standard installations. The SUNCT-RS03 is an \u003cstrong\u003eoptional wireless upgrade\u003c\/strong\u003e for situations where running a CT cable is impractical or undesirable.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #dde8e7;border-radius:6px;margin-bottom:8px;\"\u003e\n  \u003csummary style=\"background:#008377;color:#fff;padding:12px 14px;font-weight:600;cursor:pointer;border-radius:5px;font-size:14px;\"\u003eWhere exactly should the CT be fitted?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;font-size:14px;line-height:1.7;color:#333;\"\u003eClip the SUNCT-RS03 around the \u003cstrong\u003elive conductor of the grid incomer\u003c\/strong\u003e — the cable entering the consumer unit from the meter or service cutout. Do not fit it on a neutral or earth conductor. Ensure the \u003cstrong\u003edirectional arrow on the sensor body points toward the load (consumer unit side)\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #dde8e7;border-radius:6px;margin-bottom:8px;\"\u003e\n  \u003csummary style=\"background:#008377;color:#fff;padding:12px 14px;font-weight:600;cursor:pointer;border-radius:5px;font-size:14px;\"\u003eWill it work reliably through thick walls?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;font-size:14px;line-height:1.7;color:#333;\"\u003eLoRa is specifically chosen for its \u003cstrong\u003ewall-penetrating capability\u003c\/strong\u003e. The sub-GHz signal passes through brick, blockwork, and concrete far more effectively than 2.4 GHz Wi-Fi. Real-world installations consistently achieve reliable readings through multiple floors and thick masonry at typical UK domestic and commercial distances.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #dde8e7;border-radius:6px;margin-bottom:8px;\"\u003e\n  \u003csummary style=\"background:#008377;color:#fff;padding:12px 14px;font-weight:600;cursor:pointer;border-radius:5px;font-size:14px;\"\u003eCan this be used to enforce zero export on a G99 connection?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;font-size:14px;line-height:1.7;color:#333;\"\u003eYes. The SUNCT-RS03 feeds the Acure real-time grid current data, which the inverter uses to \u003cstrong\u003ethrottle its AC output and prevent any net export\u003c\/strong\u003e to the grid. This is the standard method for zero-export compliance on G99 connections where the DNO prohibits export or where an export cap is required.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003cdetails style=\"border:1px solid #dde8e7;border-radius:6px;margin-bottom:8px;\"\u003e\n  \u003csummary style=\"background:#008377;color:#fff;padding:12px 14px;font-weight:600;cursor:pointer;border-radius:5px;font-size:14px;\"\u003eCan I use this CT and Smartlynk switches on the same inverter?\u003c\/summary\u003e\n  \u003cdiv style=\"padding:14px 16px;font-size:14px;line-height:1.7;color:#333;\"\u003eYes. Both share the Acure's LoRa radio. A single Acure inverter can manage \u003cstrong\u003eup to 2 wireless CTs and up to 10 Smartlynk switches simultaneously\u003c\/strong\u003e, all communicating over the same LoRa network with no conflict or interference.\u003c\/div\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sunsynk","offers":[{"title":"Default Title","offer_id":64745856696669,"sku":"SUNCT-RS03","price":107.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/SunsynkWirelessCTClampSUNCT-RS03AcureInverter.webp?v=1779271647","url":"https:\/\/qualityheating.co.uk\/products\/sunsynk-wireless-ct-clamp-sunct-rs03-acure-inverter","provider":"AIZO Quality Heating","version":"1.0","type":"link"}