Siemens 3RV1021-1EA10 is a size S0 motor-protection circuit breaker from the Sirius 3RV2 family, designed to protect small motors in electrical control circuits. It provides overload protection with an adjustable A-relay setting from 2.8 to 4 A and a fixed N-relay short-circuit release of 52 A, with screw-terminal connections and a short-circuit current rating up to 100 kA at 400 V. The device is intended for motor protection (Class 10) and is a phased-out model, with Siemens listing 3RV2011-1EA10 as the recommended successor.
