What is the primary function of a circuit breaker?

The primary function of a circuit breaker is to interrupt the flow of electricity in case of overload or fault. This safety device is designed to automatically disconnect the current when it detects an electrical fault, such as an overload condition caused by too many devices drawing power simultaneously or a short circuit, which can occur when there is a fault in the wiring. By interrupting the current flow, the circuit breaker protects both the electrical system and connected devices from damage due to excessive heat, sparks, or electrical fires. This is a crucial safety mechanism that ensures the safe operation of electrical systems in homes and industrial settings alike.