Siemens 3RV1021-0FA10 is a motor protector in the SIRIUS 3RV1021 MSP family, designed to guard small motors against overload and short-circuit in compact motor-start circuits. The 0FA10 variant is specified for a motor output of 0.25 kW (Pe) and a current range of 0.45–0.63 A, with a short-circuit release rating (Iq) of 100 kA, and it is listed for use with the contactor 3RT1024-1AP00. This combination supports integrated protection in space-efficient motor control applications.
