... 1, Test standard: IEC61643-1 2, Imax: 20kA, In: 10kA, Up: 1.3 kV 3, 20years` experience APPLICATION Surge protective Device ... surge voltage. SPD is applicable to circuit with rated voltage up to 320V~, rated frequency 50/60Hz.The product, using metal ... (V)AC220Max. continuous operating voltage Uc(V)AC320Voltage protection level Up(kV)-Less than1.3Max. discharging current(8/20 us) Imax ...