Siemens 5SV3746-6 Residual Current Circuit Breaker. Residual current operated circuit breaker, 4-pole, type A, In: 63 A, 500 mA, Un AC: 400 V. It belongs to RCCBs. Recorded manufacturer technical characteristics include Poles: 4P; RCD type: A; Rated current: 63 A; Voltage rating: AC 400 V; Residual current: 500 mA.