Feature:1. CIRCUIT PROTECTION: DC surge protector with built in overcurrent, overheating, temperature control and short circuit protection to ensure safe operation.2. EASY INSTALLATION: The surge protector is a module design, adopts 35mm standard guide rails mounting, which is easy to install and replace.3. GOOD PERFORMANCE: With IP20 protection level, the surge protective device has small leakage current, quick response and low residual voltage.4. VISIBLE WINDOW: The color of the viewing window indicates the working state of the protector, clear and intuitive, with gap discharge electrode.5. PC MATERIAL: The shell of the protector is made of PC material, which is fireproof and flame retardant, stable and reliable, ensuring safe use.Specification:Item Type: DC Surge ProtectorModel: 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: IP20.Package List:1 x Surge Protector