The SIRIUS circuit breaker 3RV23214BC10 from Siemens in size S0 is a compact, current-limiting circuit breaker for load feeders up to 7.5 kW at AC-3/400 V. Due to a short-circuit protection of 260 A and a rated current of 20 A, the circuit breaker 3RV23214BC10 is ideally suited for the protection of starter combinations.