... ,Surge Protection Device(SPD) surge arrester lightning arrester,Surge Protection Device(SPD) surge arrester applied for single- ... ,C,D class protection,it adapts to LPZ1-LPZ2 LPZ3 lightning protection area.Rated voltage Un (V~)220/380Continuous voltage Uc ... )< 25Protection level< 1.4/1.5< 1.8/1.9 lightning arrester