SIEMENS 3RV2021-4FA10-0BA0 – Circuit breaker | JUAL SIEMENS 3RV2021-4FA10-0BA0 – Special type Circuit breaker size S0 for motor protection, CLASS 10 A-release 34…40 A N-release 480 A screw terminal Standard switching capacity Ambient temperature -50 °C 500 switching cycles