Features High performance: small leakage current, fast response time and low residual voltage, the surge protector effectively protects your electrical appliances from damage. High security design: built-in over-current, overheating and temperature controlled short circuit technology with high safety and reliability. Failure Protection Built in failure trigger device, if the surge protector fails due to overheating and overcurrent failure, the failure trigger device will automatically disconnect it from the mains. Status Indicator A visual window is designed, and different colors indicate different working states of the protector, which is intuitive and convenient. Easy installation: adopt the 35mm standard rail mounting, this protector is very good to install in the household distribution box. Specification: Item type: surge protection device Case material: fireproof and flame retardant PC UC: 1000 VDC. In: 20KA (8/20μs). Maximum: 40KA (8/20μs). Top: ≤3.8 kV. Mounting: 35 standard guide rail Protection class: IP20. Package list: 1 x surge protection device. Package List 1 x Surge Protective Device