Features Flame Retardant Pc: The Surge Protective Device Shell Is Made of Pc Flame Retardant Material, Impact Resistance, Corrosion Resistance, Which Is Safer to Use. Circuit Protection: Built In Short Circuit Technology for Overcurrent, Overheating, And Temperature Control, with A Maximum Continuous Work Voltage of 1000v. Working Principle: When The System Experiences Surge Overvoltage Caused by Thunder, The Protector Quickly Opens To Introduce The Surge Overvoltage to The Ground. Easy Installation: The Surge Protective Device Is 3p Design, Standard 35mm Guide Rail Installation, And Used Together with The Circuit Breaker of The Distribution Box. Good Performance: The Dc Photovoltaic Protector Adopts Excellent Electronic Components with Good Conductivity, Ensuring Stable Performance And Efficient Operation. Specification: Item Type: DC Surge Protector Model: CHLT 40PV Material: PC Maximum Continuous Working Voltage Ucpv: 1000VDC Nominal Discharge Current In: 20KA Maximum Discharge Current Imax: 40KA Voltage Protection Level Up: ≤3.2KV Protection Level: IP20 Indication: Green Normal, Red Fault Installation: 35mm Standard Guide Rail Working Temperature: -40℃-80℃ Humidity: ≤90% (at an average of 25℃) Package List: 1 x Surge Protector Package List 1 x Surge Protector