Siemens 3RN1010-1CG00 Motor Protection Relay With Thermistor

Siemens 3RN1010-1CG00 Thermistor motor protection relay is a standard evaluation unit in the SIRIUS motor protection lineup that monitors a motor winding’s temperature via an integrated thermistor circuit and automatically interrupts or signals on overheating through 1 NO and 1 NC auxiliary contacts, powered from 110 V AC (50/60 Hz). It offers one measuring circuit and screw-terminal connections for straightforward control wiring, making it suitable for protecting industrial motors and motor-driven loads. The unit operates from an AC 110 V supply and is designed for ambient operating temperatures from -25 to +60 °C, with a measurable temperature range specified as 60 °C to 180 °C for temperature sensing. Ideal for safeguarding motors in conveyors, pumps, fans, and other industrial applications where winding temperature monitoring is required, the 3RN1010-1CG00 provides reliable thermistor-based protection within a compact, Auto-evaluation configuration.