SVU3 new series of surge protection, scientific design, the overall structure of the product compact, bright color, shell material with high strength, flame retardant grade to V0 (meet UL94). Products with high voltage over-current release let function, prevent the device by over voltage or over current jamming and damage. SVU3-/ FM with additional long-range remote signaling contact, the fault signal can be passed to the distribution control center and other places, suggesting that damaged product to be replaced. Full range of products with both common mode and differential mode protection mode, the main installation in a variety of low voltage distribution lines and control lines.