How does a circuit breaker differ from a fuse?

A circuit breaker is designed to provide protection in electrical systems by interrupting the flow of electricity when an overload or short circuit occurs. One key advantage of a circuit breaker is that it can be reset after it has tripped, allowing it to be used repeatedly without the need for replacement. This reset capability makes circuit breakers more convenient for managing electrical systems since they can be restored to operation quickly and easily, minimizing downtime.

In contrast, a fuse operates on a one-time-use principle; once it melts due to excessive current flow, it must be physically replaced to restore the circuit. This fundamental difference between the two devices is critical in understanding their applications in electrical systems. The ease of resetting circuit breakers compared to replacing fuses often makes them the preferred choice in many modern installations.