Product Overview and Key Ratings
The Siemens 3RN2000-2AW30 is a SIRIUS 3RN2 thermistor motor protection relay designed to monitor motor winding temperature via PTC thermistor sensors. The output contact is rated 1 A at 24 V, 0.2 A at 125 V, and 0.15 A at 240 V — sufficient for signaling to a PLC or contactor coil. The unit is a compact evaluation relay intended for use with bimetallic switches; terminal A1 is jumpered with the root of the changeover contact per the design specification.
Mounting and Environmental Specifications
Clearance requirements: 0 mm upwards, forwards, backwards, downwards, and at the side — meaning it can be placed flush against adjacent components without derating for spacing. The housing is rated IP20 for finger-safe installation inside a panel. Pollution degree 3 allows use in industrial environments with conductive pollution.