简介: :In electronics and electrical engineering, a fuse is a type of low resistance resistor that acts as a sacrificial device to provide overcurrent protection, of either the load or source circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, interrupting the circuit that it connects. Fuses are devices used in electrical circuits to protect against overcurrent conditions. A fuse is a metal wire element with a very low resistance. This wire melt