Surge Protection Lightning Protection 3 Phase Fire Retardant Protective Device For Home 420V 1. Sensitive Response: When a surge surge voltage occurs in the system, the sensitive protector immediately opens quickly in nanoseconds and introduces the anti-surge surge voltage into the ground to ensure the electrical equipment.2. Computer Case: The surge protector's PC case is fireproof and corrosion-resistant, and the plug design supports wired operation for ease of use.3. 3 Phase: In a three-phase four-wire system, the three-phase lines and the neutral to ground are connected between the protector.4. Easy Installation: This surge protector is compact and easy to use with rail mounting, effectively protecting your electrical equipment.5. Wide Application: This surge protector has a wide range of applications and can be used in homes, offices and other places, and is very easy to install on the rail. Specification: Item Type: Surge Protector Material: PC Installation: 35mm electrical pathUc: -420VImax: 20KAW: 10KAUp :le; 2.0kv Working ambient temperature: -40-80Package list: 1 x surge protector