The Siemens 3RN2013-2BA30 is a SIRIUS 3RN2 thermistor motor protection relay — a standard evaluation unit with ATEX approval, open-circuit and short-circuit detection in the sensor circuit, safe disconnection, and non-volatile error memory. It monitors motor winding temperature via PTC thermistors and trips on over-temperature, sensor fault, or sensor short. The relay operates on 24 V AC/DC supply and is rated for continuous use in IP20 enclosures.
The 24 V supply is fixed — no wide-range input, so confirm your control voltage matches before wiring. Switching capacity is rated at 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V; these are the maximum resistive loads the output contacts can break. MTBF is listed at 97 a and MTTFd at 303 a, which reflects a solid-state design with no moving parts in the sensor evaluation path.