PRODUCT PARAMETERS: Rated voltage: 220V, rated current: 40KA, number of main contacts: 2P, mounting: rail, weight: 225g. Uc: ~420V-AC 420V RELIABLE MATERIAL: The 2P surge protector is made of high-quality material, strong and durable. The surge protector housing is made of flame-retardant PC material, safer to use. This household surge protector is suitable for the highest AC420V DC voltage. IDEAL CHOICE: Surge protectors are equipped with visual windows that indicate the on and off status at a glance, meeting the basic needs of users. APPLICATIONS: Surge protectors are generally used to protect electrical systems and charging equipment from lightning and transient overvoltages and are widely used in homes, office buildings, commercial buildings, schools, factories, and other locations. SIMPLE INSTALLATION: The 220V surge protector features stable performance and easy installation. It is simple to install on the home electrical system and downstream circuits. It must be connected in parallel with the power supply, and the ground must be connected to the main node.