
The function of a lighting fuse is to automatically melt and cut off the current when the current abnormally rises to a certain level and duration, thereby protecting the safe operation of the circuit. The conductor inside the fuse is made of a metal similar to solder, which has a lower melting point than ordinary wires. The size of this conductor is precisely calibrated so that it can generate sufficient heat to melt and break the circuit when the rated current is reached. Fuses have two important working parameters: one is the working voltage, and the other is the rated current. Car owners should select fuses based on the voltage and current in the circuit when purchasing or replacing them.


