Features High flame-retardant shell: Surge protective arrester is made of high flame-retardant and impact-resistant plastic, which can effectively prevent fire and make you feel safer and more assured during use. Precision chip: 4P surge protective arrester adopts precision chip inside, with high precision and good conductivity. The rated voltage is 220V, and the UP is less than 2.0KV. DIN rail installation: DC photovoltaic household lightning protector adopts DIN rail installation, easy to operate. The house surge protector can be disassembled and assembled for easy insertion and removal Copper fittings: 420V low voltage arrester device uses copper fittings, which have high electrical and thermal conductivity, are not easy to corrode, have high compressive strength, and are not easy to deform Purpose: House lightning arrester can be used to install electrical equipment to protect electrical systems and loaded electrical appliances from lightning strikes and transient overvoltages Package List