Fuse Cover is used in gas-insulated medium- voltage equipments in 12/24KV SF6 smart switch cabinet and ring main units. The product is an important protection part of SF6 switch cabinet. When the fault happens in the circuit, the fuse will be burnt out and so bring out an impact force of 50N to knock off the plastic pin, and then the protective switch will be turned off, so it can guard the equipments in a safe way. The product has passed the type test of Beijing Electric Power Research Institute. It’s used for SF6 switch cabinet of ABB Beijing company.