NT-C20

NT-C20 Series surge protective(in short SPD, alias, surge protector, surge arrester)is suitable for TN-S,TN-C-S,IT etc. power supply system of AC 50/60 Hz, ≤380V,installed on the joint of LPZ1 or LP2 and LPZ3, it’s designed according to IEC61643-1,GB18802.1,it adopts 35 mm standard rail, there is a failure release mounted on the module of surge protective device. When the SPD fails in breakdown for over-heat and over-current, the failure release will help electric device separate from the power system and give the indication signal, green means normal, red means abnormal, it’s also could be replaced for the module when has operating voltage.