... Lightning Protector,house surge protector Key words : Surge Protective Device,SPD,Surge Protection,house surge protector,Surge Arrester,Surge Suppressor,Lightning Surge Protector,Surge Protecton Device,Lightning Protection,Distribution Surge Protection,Lightning ... Product introduce and application:DGM-type surge protector(hereinafter referred to as SPD)adapted to AC,mainly used for rated voltage not ...