What is the primary purpose of a circuit breaker?

The primary purpose of a circuit breaker is to protect circuits from damage during overloads. Circuit breakers are essential safety devices designed to interrupt the flow of electricity when they detect faults such as short circuits or overload conditions. This interruption safeguards electrical circuits and connected devices from overheating and potential damage, which could lead to electrical fires or equipment failure.

When the electrical current exceeds the safe threshold, the circuit breaker automatically trips, cutting off the current to prevent further damage. This mechanism helps in maintaining safety and ensuring that electrical systems operate smoothly without risking user safety or equipment integrity. Thus, the role of the circuit breaker is crucial in circuit protection and overall electrical system stability.