What is the function of circuit breakers in an electrical system?

Circuit breakers play a critical role in maintaining safety within an electrical system. Their primary function is to disconnect the electrical supply when there is an overload or fault condition. This protective mechanism helps prevent damage to electrical equipment, reduces the risk of electrical fires, and ensures the safety of individuals by stopping the flow of current that could lead to hazardous situations.

When a circuit experiences an overload—where the current exceeds a certain threshold—or a short circuit, the circuit breaker automatically interrupts the flow of electricity. This action prevents further damage and allows for troubleshooting and repair before power can be restored. The ability of circuit breakers to quickly detect and react to these conditions makes them essential for modern electrical systems.

The other functions listed are associated with different electrical components. Stabilizing voltage levels is handled by voltage regulators or transformers, converting AC to DC power is typically done by rectifiers, and amplifying electrical signals is the function of amplifiers. Each of these components serves a distinct role in electrical systems, separate from the protective function of circuit breakers.