Siemens 5SU1674-8BK81 RCBO, 4P, 100A, D-char, 300mA, selective. RCBO, 10 kA, 4P, type B, selective, 300 mA, D char., In: 100 A, Un AC: 400 V. It belongs to RCBOs. Recorded manufacturer technical characteristics include Poles: 4P; RCD type: B; Trip curve: D; Rated current: 100 A; Voltage rating: AC 400 V; Residual current: 300 mA; Breaking capacity: 10 kA.