1、Surge Protection: When there is a surge overvoltage, this protector will turn on quickly within nanoseconds, introduce the surge overvoltage into the ground, protect the electrical equipment. 2、High Performance: The surge protector has quick response speed, strong carrying capacity, and will not affect the normal operation of the power grid. 3、Fault Indication: There is a working status indication window, green means normal, red means fault, which can effectively reflect the working status and facilitate timely replacement and maintenance. 4、High Safety: The surge protector is fire and corrosion resistance, adopts insulated terminal blocks, more reliable and safe, supports hot line operation and is easy to use. 5、Rail Installation: The surge protector is modularly designed and adopts 35mm electrical rail installation method, simple and convenient. Item Type: Surge Protective Device Material: PC Color: White Maximum Discharge Current (Imaximum): 40KA Nominal Discharge Current (In): 20KA Protection Level (up): 2p/3p: 1.8KV, 4p: 1.2KV Protection Class: IP20 Response Time: ≤25ns Maximum Wire Diameter: 35 hard wire or multi strand wire (mm²) Recommended Connection: 4-25 (mm²) Installation Method: 35mm electrical rail installation Ambient Temperature: -40℃ to +80℃ Main Structure and Working Principle: 1 x Surge Protective Device