AC 420V Household Surge Arrester Device Modular Design with DIN Rail InstallationFeatures:The case is made of flame retardant plastic material, durable and safe to use.Precise electronic components inside, providing long service life and stable performance.High quality terminals, with good electrical conductivity.DIN rail installation, flexible to use, convenient to assemble.Compact size and light weight; Modular design, easy to maintain.Note:1. Installation should only be carried out by a qualified electrician.2. Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.Specifications:Pole Number: 2P+2P/ 4P (Optional)Color: GreyCase Material: PlasticVoltage: AC 420VImax: 40KAIn:20KAUp: 1.8KV3C Rated Voltage Range: 50VVoltage440VItem Size:2P (Each): 35 * 65 * 90mm / 1.38 * 2.56 * 3.54in4P: 70 * 65 * 90mm / 2.76 * 2.56 * 3.54inPackage Size: 9.8 * 7.6 * 7.3cm / 3.86 * 2.99 * 2.87inPackage Weight:2P+2P: 420g / 14.81oz4P: 383g / 13.50ozPackage List:1 * 4P Surge Protective Device