What is the primary function of a circuit breaker?

The primary function of a circuit breaker is to automatically open circuits when there is an overload or short circuit, thereby preventing damage to the electrical system and reducing the risk of fire or equipment failure. When an electrical current exceeds a predetermined limit, the circuit breaker interrupts the flow of electricity, which helps protect appliances, wiring, and prevents hazardous situations.

The role of a circuit breaker is crucial for maintaining safety within an electrical system, ensuring that circuits do not become overloaded. This automatic functioning is vital in residential, commercial, and industrial settings, as it contributes significantly to the overall health and safety of electrical installations.