{"product_id":"din-rail-energy-meter-40ma-modbus","title":"Single Phase DIN Rail Energy Meter 40mA CT Modbus | Eastron SDM120CTM","description":"\u003cp\u003eThe Eastron SDM120CTM is a single phase multifunction DIN rail energy meter supplied with a 40mA CT current transformer. It measures a wide range of electrical parameters and communicates over RS485 Modbus RTU, making it suitable for use alongside major solar inverter brands for export control and self-consumption monitoring. This is the 40mA CT variant; a 100mA version is sold separately.\u003c\/p\u003e\u003ch2\u003eSingle phase DIN rail meter features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCT included\u003c\/strong\u003e, supplied with a 40mA current transformer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurements\u003c\/strong\u003e, kWh, kVArh, kW, kVAr, kVA, PF, Hz, V, A and more\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBi-directional\u003c\/strong\u003e, records both import and export energy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication\u003c\/strong\u003e, RS485 Modbus RTU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse outputs\u003c\/strong\u003e, two configurable outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003e, white backlit LCD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e, better than Class 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat\u003c\/strong\u003e, compact DIN 43880 case, 35mm rail mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection rating\u003c\/strong\u003e, IP51, for indoor use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct overview\u003c\/h2\u003e\u003cp\u003eBuilt for residential, utility and industrial single phase applications, the bi-directional measurement makes this meter well suited to solar PV monitoring. It lets an inverter or energy management system track consumption drawn from the grid alongside any surplus exported.\u003c\/p\u003e\u003cp\u003eThe RS485 port supports Modbus RTU at 1200 to 9600 bps, with configurable parity, stop bits and a Modbus address from 1 to 247. Pulse output 1 can be set to total, import or export kWh or kVArh. Pulse output 2 is fixed at total kWh, at 1000 imp\/kWh.\u003c\/p\u003e\u003ch3\u003eInverter compatibility\u003c\/h3\u003e\u003cp\u003eThe SDM120CTM 40mA works with a range of solar inverter brands. Always check the CT rating your inverter requires before ordering: this is the 40mA variant, and using the wrong CT rating will give incorrect readings.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSolar PV export and self-consumption monitoring\u003c\/li\u003e\n\u003cli\u003eZero export control with compatible hybrid inverters\u003c\/li\u003e\n\u003cli\u003eResidential and small commercial energy metering\u003c\/li\u003e\n\u003cli\u003eDIN rail panel installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eInstallation and safety notes\u003c\/h3\u003e\u003cp\u003eThis meter operates at mains voltage and must be installed by a qualified electrician in line with IET Wiring Regulations. Confirm the CT rating matches your inverter's requirements before fitting. The unit carries an IP51 rating and is for indoor use only.\u003c\/p\u003e","brand":"Eastron","offers":[{"title":"Default Title","offer_id":52060750577952,"sku":"SDM120CTM-40mA+ESCT-TA16-100A\/40mA","price":61.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/8148\/1504\/files\/ledandsolar-sdm120ctm-40ma-esct-ta16-100a-40ma-1.webp?v=1785502915","url":"https:\/\/www.ledandsolar.co.uk\/products\/din-rail-energy-meter-40ma-modbus","provider":"LED \u0026 Solar","version":"1.0","type":"link"}