Feature: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.Specification:Item Type: Surge Protection DeviceModel: CHLT 40PVMaterial: PC(Flame retardant)Maximum Continuous Operating Voltage: DC600VNominal Discharge Current: 20kA (8/20s)Maximum Discharge Current: 40kA (8/20s)Voltage Protection Level Up: 2.8kVNumber of Poles: 2P Protection Level: IP20Working Temperature: -40 - 80Working Humidity: 90%(at 25 on average).Package List:1 x 2P Surge Protective Device1 x Sliding SheetNote:1. The power supply must be cut off before installation, and operation with electricity is strictly prohibited.2. When installation, please connect according to the installation diagram, where + is the positive line, is the negative line, do not misconnect, after installation is complete, close the automatic circuit breaker (fuse) switch, check whether the working state is normal.