Feature 1 CIRCUIT PROTECTION: 2P surge protector with built in overcurrent, overheat and temperature control circuit breaker technology to ensure high safety. 2 GOOD PERFORMANCE: 1000V DC surge protector has the advantages of small leakage current, quick response time and low residual voltage. 3 EASY TO INSTALL: With module design, the surge protector is installed on the standard 35mm electrical guide rail, built in failure release device. 4 PC HOUSING: The shell is made of excellent PC material, which is fireproof and flame retardant, ensuring safe operation and long service life. 5 WITH INDICATOR: The large arrestor protector has indicator module to display the working status, green indicates normal and red indicates fault.Item Type: Surge Protection DeviceModel: SGSP 40Uc: 1000VDCIn: 20KA(8/20s)Inmax: 40KA(8/20s)Up: 3.8KVShell Material: Fireproof and high flame retardant PCInstallation: 35 standard guide railProtection Grade: IP20Characteristic: This series of surge protector is applicable to TT and IT of AC 50/60Hz, 1000V and below The IT-S, TN-CS and other power supply systems can be used as the equipotential connection at the interface between LPZ1, LPZ2 and LPZ3. The design basis is in accordance with IEC61643-1 and GB8802.1. The shell is designed to be installed on the 35mm electrical guide rail. The built in failure release device surge protector of the product can automatically disconnect it from the power grid when it is ineffective due to overcurrent overheating, At the same time, the visual warning indicator module changes from green (normal) to red (fault). The module with protector can be replaced when there is working voltage. Package List1 x Surge Protection Device