Feature:Flame retardant shell, fire proof, safe to use.Precise design, anti-corrosion and wear resistance.It has the characteristic of stable performance, and easy to install.Removable assembly, easy to plug and unplug.Quick response when lightning occurs, unloading voltage, protecting home appliances and your safety.Strict quality inspection process to ensure the quality of each product.Specification:Condition: Brand NewOptional Size: 3p20ka, 3p40kaProduct performance: arresterNominal discharge current 20KAMaximum discharge current: 40KAVoltage: 1000V DC (both 500V 800V)Installation method: rail mounting protection type: IP20Voltage level protection up: 3.0KAFailure indication: green normal / red faultHousing material: flame retardant PA66Color: As Picture ShowPackage Weight: Approx 380gPackage List:1 * House Surge ProtectorNote:1. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard..2. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.