Features Protect Power System: Efficiently safeguards AC power system from thunderstrike or overvoltage, ensuring practical defence for electrical equipment. Stable Electrical Conductivity: Flame retardant, fireproof enclosure prevents burning out internal components, accurate chips provide high accuracy, better electrical conductivity, and thunder defence guarantee. Easy to Maintain: Modular design and excellent process make it simple to use and maintain, ensuring good conductivity with minimal effort. Effective defence: Quickly opens within nanoseconds when overvoltage occurs, diverting it into the ground to safeguard electrical equipment from damage due to thunder or other reasons. Easy to Install: Excellent performance and simple rail-mounted installation make this protective device safer and more user-friendly. Features: 1、PROTECT POWER SYSTEM: Voltage arrester device can efficiently protect the AC power system from thunderstrike or overvoltage, very practical 2、STABLE ELECTRICAL CONDUCTIVITY: Flame retardant and fireproof enclosure prevents protectors from burning out internal components , accurate chips possess high accuracy, better electrical conductivity, thunder defence guarantee 3、EASY TO MAINTAIN: The product adopt a modular design and excellent process, which is very simple to use and maintain with good conductivity 4、EFFECTIVE defence: When a overvoltage occurs in the system due to thunder or other reasons, the protector immediately opens quickly within nanoseconds, and introduces the overvoltage into the ground to protect the electrical equipment 5、EASY TO INSTALL: protective device has excellent performance, safer to use, rail mounted installation is very simple Specification: Item Type: Protective Device Material: PC flame retardant Maximum Continuous Working Voltage Uc: 420V AC Nominal Discharge Current In: 20kA (8/20μs) Maximum Discharge Current Imax: 40kA (8/20μs) Voltage defence Level Up: ≤1.8KV Number of Poles: 3P Installation: Approx. 36mm / 1.42in rail defence Class: IP20 Working Temperature: -40℃~80℃, Humidity: ≤90% (average 25℃) Package List: 1 x Protective Device Package List 1 x Surge Protective Device