... referred to as SPD)adapted to AC,mainly used for rated voltage not exceeding 1000V(RMS),200/380V,50/60Hz power supply ... /4 exact technology parameter is as below:Type No.Rated Voltage(V) UnContinuous Voltage Uc(V~)Standard Discharge Current In(KA)Max Discharge ... customized Uc=140V,440V,550V,voltage range of range of the SPD):Type No.Rated Voltage(V) UnContinuous Voltage Uc(V~)Standard Discharge Current ...