What is the main function of a circuit breaker?

The main function of a circuit breaker is to automatically interrupt current flow to prevent overload. Circuit breakers are safety devices designed to protect electrical circuits from damage caused by excess current, which can occur due to short circuits or overloads. When the flow of electricity exceeds a certain threshold, the circuit breaker will trip, immediately stopping the flow of current. This action helps to prevent fires, equipment damage, and other hazards that can result from overheating or excessive electrical loads.

In contrast to boosting electrical current or maintaining voltage levels, the circuit breaker's sole purpose is to serve as a protective mechanism. Additionally, rather than being a permanent wiring solution, circuit breakers are specifically designed for interruption and resetting once the issue has been resolved, thus ensuring the safety of the electrical system. By doing so, they play a crucial role in electrical safety standards.