Feature 1 Surge Protector: When a overvoltage surge occurs in the system due to lightening strike or other reasons, the protector immediately opens quickly within nanoseconds, and introduces the overvoltage surge into the ground to protecting the electrical equipment. 2 Reliable Working: With 20kA nominal discharge current In and 40kA maximum discharge current Imaximum to ensure the electrical safety. 3 Safe Protection: The 1000V DC maximum continuous working voltage Uc ensures easier circuit operating as well as higher efficiency. 4 Good Durability: Adopting flame retardant PC materials with modular structure, the voltage arrester is very durable for long use. 5 Easy to Install: Standard 36mm rail mount enables stable work performance in combination with distribution box and circuit breaker.Item Type: Surge Protective DeviceModel: LT1 40Material: Flame retardant PC material. Maximum Continuous Working Voltage Uc: 1000V DCNominal Discharge Current In: 20kA (8/20s)Maximum Discharge Current Imaximum: 40kA (8/20s)Voltage Protection Level Up: 2.0kVPoles: 3PInstallation: 36mm / 1.42in (approx.) rail. Protection Class: IP20Working Temperature: -40~80, humidity: 90% (average 25). Package List1 x Surge Protective DeviceNote1. The power must be cut off before installation, and live operation is strictly prohibited. 2. When installing, please connect as shown in the installation diagram, where + is the positive wire and ‑ is the negative wire. Do not make wrong connections. After the installation is complete, close the switch of automatic circuit breaker or fuse, and check whether the working state is normal.