... Product DescriptionNS1-(D, C, B) 5 series surge protection device (in short: SPD, alias: surge suppressor, surge arrester ... LPZ3, it's designed according to IEC616431, GB18802.1, it adopts 35mm standard rail, there is a ... release mounted on the module of surge protection device. \When the SPD fails in breakdown for ... PositionNS1-(D, C, B)5 surge protective device is applicable for D,C,B grade lightening- ...