Surge protectives device, protects against thunder surge voltages in solar system (photovoltaic powersupply system). Features: When thunder occurs, it is necessary to respond quickly and unload the voltage to prevents household appliances from being burned. Fire-proof and flameretardant materials, safer and insulation. Plug-in type design, convenient to use. Red copper accessories, ultra-thick chips, strong conductivity, not easy to rust. Large-hole threaded terminal is more compact, long service time. Specifications: Color: red Voltage: DC1000V Discharge current(8 or 20μs): 20KA, max. 40KA Item size: 90 x 64 x 36mm or 3.5 x 2.5 x 1.4in Item weight: 184g or 6.5ounce Package size: 92 x 70 x 38mm or 3.6 x 2.8 x 1.5in Package weight: 196g or 6.9ounce Packing List: 1 x Surge Protector 1 x Arc-disconnector Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.