It is suitable for protection and control of substations, industrial and mining enterprises, and urban and rural distribution networks, especially for places　

Products suitable for 10kV, 11kV, 12kV medium voltage power grids; two products HKD-12/630-25 and HKD-12/1250-31.5 are available.　

The isolating switch is operated by an insulating hook rod when opening and closing. The insulating hook rod buckles the isolating switch hook and pulls the hook in the direction of opening.　

Drop-out fuses are installed on the branch lines of 10kV distribution lines to reduce the scope of power outages. Because they have an obvious disconnection point and have