Item Type: Surge Protective Device_x000D_ Model: SNYE 100_x000D_ Colour: White_x000D_ Material: PC_x000D_ Maximum Discharge Current Imax: 100KA_x000D_ Nominal Discharge Current In: 60KA_x000D_ Protection Level Up: 2.5KV_x000D_ Protection Grade: IP20_x000D_ Response Time: 25ns_x000D_ Maximum Wire Diameter: 35mm2 hard wire or stranded wire. _x000D_ Recommended Connection: 4-25mm2_x000D_ Installation Method: 35mm electrical guide rail installation. _x000D_ Ambient Temperature: - 40~+80_x000D_ Main Structure and Working Principle: _x000D_ In three phase four wire system, three phase lines and one neutral wire are connected to the ground with protectors. Under normal conditions, the protector is in the state of high resistance. When the power grid suffers from surge over voltage due to lightning stroke or other reasons, the protector will immediately be turned on within nanoseconds, introducing the voltage over voltage to the ground, thus protecting the electrical equipment on the power grid. When the surge voltage passes through the protector and disappears, the protector will change to a high resistance state again, so as not to affect the normal operation of the power grid.