1、Description of Function: This surge protection device can defend the alternating current power system from thunder or overvoltage. 2、Great Electrical Conductivity: Surge protection device as an internal component, accurate chip, accuracy and strong conductivity is also a nice guarantee. 3、Flame Retardant: Enhances security in usage, flame retardant, and it can withstand greater work strength, improves performance, allows for an enhanced experience in usage. 4、Easy Installation: This protector adopts 2P rail mounting, which is very easy to install. Standard 36MM rail mounting, and distribution box circuit breaker with the use of. 5、Overvoltage Protection: When the system has a surge overvoltage due to strike of thunder or other reasons, the protector immediately opens quickly within nanoseconds and introduces the surge overvoltage to the earth protecting the power using devices. 1 x 2P Surge Protective Device1 x Sliding Sheet Item Type: Surge Protection DeviceModel: CHLT 40PVMaterial: PC(Flame retardant)Maximum Continuous Operating Voltage: DC600VNominal Discharge Current: 20kA (8/20μs)Maximum Discharge Current: 40kA (8/20μs)Voltage Protection Level Up: ≤ 2.8kVNumber of Poles: 2P Protection Level: IP20Working Temperature: -40℃ - 80℃Working Humidity: ≤90%(at 25℃ on average)