Siemens 5SU1674-8EK81 RCBO 4P 100A Type D 300mA Type B+. 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.