What is the main purpose of circuit breakers in an electrical system?

The primary function of circuit breakers in an electrical system is to protect electrical circuits from overloads and short circuits. When the current flowing through a circuit exceeds a predetermined limit, either due to overload conditions where there’s too much current from connected devices or due to a fault condition like a short circuit, the circuit breaker automatically interrupts the flow of electricity. This interruption helps prevent overheating, which can lead to fires, equipment damage, or electrical shocks.

Circuit breakers are designed to react quickly to unsafe conditions, ensuring that the electrical circuit is safely disconnected from the power source. This is crucial for maintaining safety in residential, commercial, and industrial electrical systems. Unlike devices that modify electrical flow or convert electrical signals, circuit breakers are specifically tailored for protection, making them essential components in preventing electrical failures.