The Siemens SIRIUS 3RV2 circuit breaker for motor protection shuts down safe in the event of a short circuit and protection of the loads and system against overload, as well as for safe separation of the system from the network. The 3RV2 circuit breakers replace the 3RV1 series because it proved to be more efficient, simple and up to date. Circuit breaker size S00 for starter combination Rated current 12.5 A N-release 163 A screw terminal Standard switching capacity. protection class IP20