What is the primary purpose of a circuit breaker?

The primary purpose of a circuit breaker is to protect the circuit from overloads. A circuit breaker serves as an automatic switch that interrupts the flow of electricity in the event of an overload or short circuit, preventing potential damage to wiring, appliances, and equipment. When the electrical current exceeds safe levels, the breaker trips, stopping the current and ensuring safety within the electrical system.

This protective mechanism is critical in maintaining the integrity of the electrical infrastructure, as overloads can lead to overheating, fires, and equipment failure. Circuit breakers thus play a vital role in electrical safety, ensuring that circuits operate within their designed parameters and preventing harmful situations that could arise from excessive current.