This product is used in indoor AC system of 50Hz, rated voltage of 12kv to protect transformer and other electrical equipment from overloading and short-circuit. This is a new kind of current-limiting fuse. It can break any fault current from the current that can cause fuse-element melted to the rated
Breaking current. It combines the high breaking capacity of current-limiting fuse-element and the good low current protection of un-current-limiting fuse-element together to achieve good full-range breaking protecting performance.