Standard: IEC/EN60898-1 GB/T10963.1 Instantaneous trip type: B/C/D The number of poles: 1P/1P+N/2P/3P/3P+N/4P Rated short circuit breaking capacity (Icn): 6kA Rated working current (In): 1-63A Rated working voltage (Ue): AC 230/400V Rated operating frequency: 50/60Hz Rated insulation voltage (Ui): 500V Rated impulse withstand voltage (Uimp): 4kV Mechanical/electrical life: 10000/4000 Times