This is a kind of high quality, flame retardant and anti-corrosion surge protector. It prevents the domestic electrical network from being subjected to excessive shocks during a lightning strike. Working status display window, green means normal and red means error, which can effectively respond to the working status in time. Detachable installation design, the base is reusable, helps reduce maintenance costs. You can try it. Features: This is a kind of high quality, flame retardant and anti-corrosion surge protector. Plug-in design, hotline support operation, simple and easy to use. Working status display window, green means normal and red means error, which can effectively respond to the working status in time. Over-voltage protection, prevents the home power grid from being overloaded during lightning strike. Removable mounting on 35mm DIN rail, the base is reusable to reduce maintenance costs. Insulation terminal, more reliable and safe. Responds quickly with high load capacity /p&gt; Specifications: Name: Surge protection Imax: 40kA In: 20kA UP: 1.8 kV Uc: 385V Frequency: 50Hz, IP20 Operating temperature: -40 to 80: 73*90*63mm/2.87*3.54*2.48 in /&gt; Item Weight: 378g Package Size: 75 * 95 * 65mm / 2.95 * 3.74 * 2.56in Package Weight: 395g Package List: 1 * Surge Protector < /p>