The melt is the core of the fuse, commonly manufactured into wires, sheets, or grids. Materials typically used to make the melt include lead-tin alloys, zinc, copper, silver, and more.

The melt tube is a protective shell for the melt, made of heat-resistant insulating material, which has arc-quenching function when the melt melts.

The fuse holder is the base of the fuse breaker, used to secure the fuse tube and external leads.

A fuse is an electrical device primarily used for short-circuit protection in low-voltage distribution networks and power transmission systems.

The circuit breaker is mainly composed of three parts: the melting element, the melting element tube, and the melting element base.

3. During use, the fuse should be connected in series with the protected circuit. Generally, the fuse element is equivalent to a section of wire; however, when the circuit is short-circuited, the fuse element can quickly melt and break the circuit, thereby protecting the circuit and electrical equipment.