... 20):150KA Up:less than or equal to 3.0KA TO-6 surge protective device SPD 100KA: ... not shocked by the thunder and lightning,it's designed according to GB18802.1,IEC61643-1,it adopts 35mm standard rail,there is ... Application Scope and Installation PositionTO-B-150,TO-B-120,TO-B-100 series surge protective devices are ... and LPZ1 zone,which protects the electrle network not shocked by the thunder.TO6-80,TO6- ...