What is the purpose of using a circuit breaker instead of a fuse?

The purpose of using a circuit breaker instead of a fuse centers on the functionality of being able to reset after tripping. When a circuit breaker detects an overload or a fault in the circuit, it automatically disconnects the circuit to prevent damage or hazards. After the issue has been resolved, a circuit breaker can be easily reset with the flip of a switch, allowing for quick restoration of power.

In contrast, a fuse must be replaced after it blows, which can be an inconvenience and may lead to downtime in a system. This reset capability of circuit breakers not only enhances user convenience but also promotes safety, as it encourages prompt attention to circuit issues without the need for additional materials or the risk of handling potentially hazardous blown fuses.

Other aspects, like cost or the ability to handle higher voltage loads, do not fundamentally define the primary purpose of circuit breakers versus fuses. While cost and capability may differ, the reset function of circuit breakers stands out as a significant advantage in terms of practicality and operational efficiency in electrical systems.