Features [Surge Protector]: Works perfectly in protecting the DC power system from lightning strike or over voltage. [Parameters]: 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]: Surge protective device adopting premium materials, the efficient voltage arrester is very durable for long use. [Easy to Install]: Arrester device is very easy to connect to the circuit, and the simple wiring can be completed in minutes. Features: 1. Works perfectly in protecting the DC power system from lightning strike or over voltage. 2. Comes with 20kA nominal discharge current In and 40kA maximum discharge current Imax. 3. The 500V DC maximum continuous working voltage Uc ensures more stable circuit operating. 4. Surge protective device adopting premium materials, the efficient voltage arrester is very durable for long use. 5. Arrester device is very easy to connect to the circuit, and the simple wiring can be completed in minutes. Specification: 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 Device 1 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