The structure generally comprises a fuse tube, a contact conductive portion, a supporting insulator and a base, the fuse tube is filled with quartz sand fine particles for arc extinguishing, and the molten member is a metal wire made of a metal material having a lower melting point or The metal piece is connected in series in the protected circuit.
When the equipment in the circuit or circuit is overloaded or fails, the fuse heats up and melts, thereby cutting off the circuit and achieving the purpose of protecting the circuit or device.
