Features DEFEND ELECTRICAL EQUIPMENT: When the system suffers from surge overvoltage due to lightning stroke or other reasons, the protector will immediately open quickly within nanosecond and introduce the surge overvoltage to the ground to defend the electrical PC MATERIAL: Made of premium PC material, the surge protector is flame retardant and wear resistant, ensures a long life span. RAIL INSTALLATION: This surge protector adopts guide rail installation, which is very simple to install. Standard 35MM guide rail installation, used with distribution box circuit breaker. MODULE DESIGN: Adopts modular design, the surge protective device is very simple to use and maintain, and has good conductivity. STABLE PERFORMANCE: Use accuracy electronic components, longer service life, more stable performance, to help you complete your work effectively. Specification: Item Type: Surge Protective Device Material: PC Flame Retardant Maximum Continuous Working Voltage Uc: 1000V DC Nominal Discharge Current In: 20kA (8/20 μ s） Maximum Discharge Current Imaximum: 40kA (8/20 μ s） Voltage Protection Level Up: Less than or equal to 3.0kV Number of Poles: 2P Protection Grade: IP20 Working Temperature: - 40 ℃ to 80 ℃ Humidity: Less than or equal to 90% (at 25 ℃ on average) Package List: 1 x Surge Protector  1 x Slip Sheet Package List 1 x Surge Protector 1 x Slip Sheet