Acti 9 NG125L circuit breaker, 50 kA (IEC/EN 60947-2). 4-pole, rated current 20 A, D-characteristic, operating voltage (Ue) 380-415 V AC, insulation voltage (Ui) 690 V AC. Protects the circuit against short-circuit currents and overload currents. The tripping is indicated by the middle position of the switch lever and by a red mechanical display on the front of the device. Test button to check the tripping mechanism. Feed from the top or bottom. Jump switching for low-wear contact switching. Tripping unit technology: thermomagnetic. Additional snap-on auxiliary modules (optional): indication of switching position, fault tripping, working current tripping, undervoltage tripping, overvoltage tripping. The NG125L circuit breaker complies with the following standards: IEC/EN 60947-2.