Features 1、APPLICATION: Mainly suitable for 50Hz (or 60HZ) electrical circuit with an impulse current capacity less than 200kA. 2、SURGE ARRESTER: The house voltage protector can limit the amplitude of transient overvoltage, absorb, consume or discharge the energy of surge current. 3、CIRCUIT PROTECTION: When facing higher overvoltage category, the protected electrical components can be converted from one overvoltage category to another lower overvoltage category. 4、HOME USE: Can be applied for the protection of electrical appliances in households and similar places when there is an induced lightning overvoltage in the line, and when the operating overvoltage occurs. 5、SIMPLE INSTALLATION: Installation method is matched with TH35mm wide rail, very convenient to install with small size and light weight. Specification Item Type: Surge Protective Device Product Model: BEM-LY40 Product Specifications: 3P40KA Rated Voltage: 220V, 380V Maximum Sustainable Working Voltage: 385V Maximum Discharge Current: 40KA Nominal Discharge Current: 20KA Voltage Protection Level: ≤1.8KV Response Time: ≤25nS Ambient Temperature: -40℃~+80℃ Altitude: not more than 2000 meters (Approx. 2000m / 6561.7ft). Relative Humidity: Not more than 90% (25℃). Package List 1 x Surge Protective Device