What role do circuit breakers play in electrical installations?

Circuit breakers play a crucial role in electrical installations by enhancing safety through their ability to interrupt the flow of current in the event of overloads or short circuits. When an electrical fault occurs, such as an excessive current which can lead to overheating of wires and potentially cause fires, the circuit breaker automatically disconnects the electrical circuit. This interruption prevents further current flow which mitigates the risk of overheating, protecting both the electrical system and the surrounding environment.

By serving as a protective device, circuit breakers contribute significantly to overall electrical safety in homes and commercial buildings. While other options speak to functionalities that do not align with the purpose of circuit breakers, the emphasis on safety is what defines their primary role in electrical installations.