Feature:1. Surge Protector: Works perfectly in protecting the DC power system from lightning strike or over voltage.2. Reliable Working: Comes with 20kA nominal discharge current In and 40kA maximum discharge current Imax.3. Safe Protection: The 500V DC maximum continuous working voltage Uc ensures more stable circuit operating.4. Good Durability: Adopting premium materials, the efficient voltage arrester is very durable for long use.5. Easy to Install: Very easy to connect to the circuit, and the simple wiring can be completed in minutes.Specification:Item Type: Surge Protective DeviceModel: CHLT-40PVNominal Discharge Current In: 20kA (8 or 20s)Maximum Discharge Current Imax: 40kA (8 or 20s)Number of Poles: 2PProtection Level: IP20Working Temperature: -40-80, humidity: 90 percent (average at 25). .Package List:1 x Surge Protective Device1 x Slip SheetNote:1. The power supply must be cut off before installation, and hot line work is strictly prohibited 2. When installing, please connect according to the installation diagram, where and is the positive wire and and 8209 is the negative wire. Do not connect it wrongly. After installation, close the automatic circuit breaker (fuse) switch and check whether the working state is normal.