Question

what is a fuse and of what material is it made?

Answer 1

In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby interrupting the current. It is a sacrificial device; once a fuse has operated it is an open circuit, and it must be replaced or rewired, depending on type.

Answer 2

An electrical safety device consisting of or including a wire or strip of fusible that melts and interrupts the circuit when current exceeds a particular amperage.