What is the function of fuses in electrical circuits?

Fuses play a crucial role in electrical circuits by providing protection against overloads. When the current flowing through a circuit exceeds the rated capacity of the fuse, it melts or breaks the circuit, thereby disconnecting the power. This action prevents potential damage to the electrical components and reduces the risk of fire that can arise from excessive current.

This protective mechanism ensures that the circuit operates within safe limits and helps to maintain the integrity of the system. Unlike devices that amplify current, regulate voltage, or store energy, a fuse's primary function is to interrupt the flow of electricity to prevent hazardous conditions. Therefore, the correct focus is on their role in disconnecting the circuit to handle overload situations effectively.