Features Surge Protector: Works perfectly in protecting the DC power system from lightning strike or over voltage. Reliable Working: Comes with 20kA nominal discharge current In and 40kA maximum discharge current Imax. Safe Protection: The 500V DC maximum continuous working voltage Uc ensures more stable circuit operating. Good Durability: Adopting premium materials, the efficient voltage arrester is very durable for long use. Easy to Install: Very easy to connect to the circuit, and the simple wiring can be completed in minutes. Specification: Item Type: Surge Protective Device Model: CHLT-40PV Maximum Continuous Working Voltage Uc: 500V DC Nominal Discharge Current In: 20kA (8/20μs) Maximum Discharge Current Imax: 40kA (8/20μs) Voltage Protection Level Up: ≤2.8kV Number of Poles: 2P Protection Level: IP20 Working Temperature: -40℃~80℃, humidity: ≤90% (average at 25℃).  Package List:1 x Surge Protective Device1 x Slip Sheet Note: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 + is the positive wire and ‑ 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. Package List 1 x Surge Protective Device 1 x Slip Sheet