Features Quick Surge Protection: Responds within nanoseconds to divert surge overvoltage, safeguarding electrical equipment from damage. Superior Performance: Boasts a high carrying capacity and swift response to prevent excessive impact on the power grid. Working Status Indication: Features a clear indication window to reflect normal (green) or fault (red) working status for easy monitoring. Enhanced Safety: Constructed with fire-retardant PC shell and insulated terminal blocks for increased reliability and safety. Easy Installation: Supports hot line operation, modular design, and 35mm electrical rail installation method for user-friendly setup. Specification: Item Type: Surge Protector Material: PC Color: White Maximum Discharge Current (Imaximum): 20KA Nominal Discharge Current (In): 10KA Protection Level (Up): 1.5KV Protection Grade: IP20 Response Time: ≤ 25ns Maximum Wire Diameter: 35 hard wire or stranded wire (mm²） Recommended Connection: 4-25 (mm²） Installation Method: 35mm electrical guide rail installation Ambient Temperature: - 40℃ to +80℃ Main Structure and Working Principle: In a three phase four wire system, protectors are connected between three phase wires and one neutral wire to ground. Under normal circumstances, the protector is in a high resistance state, when the power grid deals with surge overvoltage due to lightning strike or other reasons, the protector will turn on quickly within nanoseconds, and introduces the voltage overvoltage into the ground, thus protecting the electrical equipment on power grid. When the surge voltage passes through the protector and disappears, the protector changes to a high resistance state again, so as not to affect the normal operation of the power grid. Package List: 1 x Surge Protector Package List 1 x Surge Protector