HWY1 series surge protector is applied in supply system of AC50/60Hz, 380V and the below TT, IT, TN-S, TN-C-S etc, as connection of iso-potential when lightning strike, the design accord with IEC-61643, GB18802. 1(2002 year sign) standards, the design of outside frame is can be installed directly on 35 mm guide rail, set failure release equipment inside the product, when power protection over current and over hot leading breakdown failure, the failure release

Equipment will release it from power net automatic, meanwhile, the graphic alarm direction module can change under normal voltage.