The Protective Function Of Fuses

Fuses act as a protective shield in electrical circuits. Although this function has been largely replaced by devices like residual current devices (RCDs), fuses are still used in some applications.

When a circuit malfunctions or experiences an anomaly, the current increases continuously. This increased current can damage critical components, burn out the circuit, or even cause a fire.

When a fuse is correctly installed in a circuit, it will melt and break when the current abnormally rises to a certain level and temperature, thus cutting off the current and protecting the circuit's safe operation.