Features Ultimate Surge Protection: Safeguard your house electrical equipment with this high-performance Surge Protective Device, providing quick response to surge overvoltage and diverting it into the ground, ensuring maximum protection. Reliable and Safe: Featuring insulation wiring terminal and strong carrying capacity, this Surge Protector ensures reliable and safe performance, preventing excessive impact on the household power grid. Convenient Fault Indication: The built-in indication window effectively reflects the device's status, with green indicating normal operation and red signaling a fault, allowing for timely maintenance. Fire and Corrosion Resistance: This Surge Arrester Device boasts high safety standards, offering fire and corrosion resistance, supporting hot line operation, and ensuring ease of use. Easy Rail Installation: The modular design of this Surge Protection Device allows for effortless 35mm electrical guide rail installation, making it easy to mount and set up. Specification: Item Type: Surge Protective Device Material: PC Color: White Maximum Discharge Current (Imaximum): 80KA Nominal Discharge Current (In): 40KA Protection Level (Up): 2.2KV 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 Protective Device Package List 1 x Surge Protective Device