Siemens 5SV3642-8 Residual Current Circuit Breaker. Residual current operated circuit breaker, 4-pole, type A, selective, In: 25 A, 300 mA, Un AC: 400 V. It belongs to RCCBs. Recorded manufacturer technical characteristics include Type: A; Poles: 4; Rated current: 25 A; Tripping type: Selective; Rated voltage AC: 400 V; Rated residual current: 300 mA.