What are high-speed fuses and Fast acting fuse?

What are high-speed fuses and Fast acting fuse?

High speed fuse is a type of Fast acting fuse used for circuit protection equipment. It has low-energy overcurrent characteristics and can protect against the effects of overcurrent faults. High speed fuses and fast fuses are composed of one or more current carrying components. They have contacts, namely end caps, ceramic shells, and fuse links. The fuse links are made of copper alloy and silver sheets, and the tube body is filled with high silicon sand to complete arc extinguishing