Why is the fuse important equipment?

          As we saw earlier, a fuse is a device that is provided in an electrical circuit to protect the appliances connected to it from damage. It is a safety tool that limits current in a circuit.

          Structurally, a fuse is a short piece of wire made up of elements like zinc, copper, silver, aluminium, which have high resistance, and a low melting point. In case of overheating due to excess current, the fuse tends to melt and separate. It thus prevents fire outbreaks and also protects humans from electric shock.

           Fuses, in general, are used in all types of electrical and electronic applications.

            Depending on their uses, there are different types of fuses available. One is the cartridge fuse, which is used to protect electrical appliances like motors, air-conditioners, refrigerators, pumps etc., where high voltage rating and currents are required.

           Then there are blade type fuses that come in a plastic body with two metal caps, to be fitted in a socket. These fuses are mostly used in automobiles for wiring and protection from short circuit.

           Another category is of reset-table fuses. They can be used multiple times without being replaced. Such fuses are seen in nuclear systems, or in aerospace systems.