{"product_id":"siemens-thermistor-motor-protection-relay-2c-o-24-240vac-dc","title":"Siemens Thermistor motor protection relay, 2C\/O, 24-240VAC\/DC","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 3RN2012-1BW30 is a SIRIUS 3RN2 thermistor motor protection relay designed for monitoring motor windings via thermistor sensors. It supports automatic, manual or remote reset functions and features two change-over auxiliary contacts for interfacing. The unit is DIN-rail mountable in a 22.5 mm wide housing and offers advanced protection functions including short-circuit and open-circuit detection in the sensor circuit, wire-break monitoring and error memory.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThermistor motor protection relay from the Siemens SIRIUS 3RN2 series\u003c\/li\u003e\n\u003cli\u003eCompact 22.5 mm width standard evaluation unit for DIN-rail use\u003c\/li\u003e\n\u003cli\u003eRated control supply voltage from 24 to 240 V AC\/DC\u003c\/li\u003e\n\u003cli\u003e2 change-over auxiliary contacts (2 CO) for signaling or interlock applications\u003c\/li\u003e\n\u003cli\u003eAutomatic, manual and remote reset modes selectable\u003c\/li\u003e\n\u003cli\u003eWire-break and short-circuit detection in the thermistor sensor circuit\u003c\/li\u003e\n\u003cli\u003eNon-volatile error memory for fault history retention\u003c\/li\u003e\n\u003cli\u003eATEX approval for use in hazardous environments (depending on specific variant)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Series:\u003c\/strong\u003e SIRIUS 3RN2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 3RN2012-1BW30\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Supply Voltage (Us):\u003c\/strong\u003e 24 … 240 V AC\/DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 22.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Auxiliary Contacts:\u003c\/strong\u003e 2 change-over\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset Modes:\u003c\/strong\u003e Automatic \/ Manual \/ Remote selectable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Functions:\u003c\/strong\u003e Motor winding thermistor monitoring, wire-break detection, short-circuit detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN-rail (35 mm) mountable, screw terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Ambient Temperature:\u003c\/strong\u003e –25 °C … +60 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage\/Transport Temperature:\u003c\/strong\u003e –40 °C … +85 °C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance \u0026amp; Certifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned and manufactured by Siemens according to SIRIUS series motor protection standards\u003c\/li\u003e\n\u003cli\u003eComplies with IEC\/EN regulation for motor protection relays (including wire-break and short-circuit monitoring)\u003c\/li\u003e\n\u003cli\u003eATEX certified variant available for use in hazardous areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIdeal for motor protection systems using thermistor sensors (PTC\/thermistor) in applications such as pumps, compressors, conveyors and general industrial motors. It provides reliable monitoring of motor winding temperature and sensor faults, enabling early shutdown or alarm before damage occurs.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775085457472,"sku":"3RN2012-1BW30","price":2063.49,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/3RN2012-1BW30.jpg?v=1762942041","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-thermistor-motor-protection-relay-2c-o-24-240vac-dc","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}