Power Surge Arrestors 20ka Surge Suppressor AC Surge Protector Device

   TRS4-D Series surge protective device( hereinafter referred to as SPD) are suitable forAC 50/60Hz, rated voltage up to 380v IT,TT,TN-C, TN-S,TN-C-S and other power supplysystem,  it protect to indirect and direct lightning effect or other transient overvoltage     SPD design according with GB18802.1/IEC61643-1 standard.Main technical parametersMain technical parametersTRS4-D20Max continuous operating voltage  Uc(VAC)420Voltage protection level  Up(kV)≤1.7Max discharge current (8/20μS)  lmax(kA)20Nominal discharge current (8/20μS)  ln(kA)10Response time ns