What is the primary function of a circuit breaker?

The primary function of a circuit breaker is to disconnect the power supply in case of overload. Circuit breakers are designed to protect electrical circuits from damage caused by overcurrent conditions, which can result from overloads or short circuits. When the current flowing through the circuit exceeds a predetermined level, the circuit breaker automatically trips, breaking the circuit and stopping the flow of electricity. This action helps prevent overheating, electrical fires, and damage to appliances and equipment connected to the circuit.

While converting AC to DC, regulating voltage levels, and ensuring proper grounding are important aspects of electrical systems, these functions are not the primary role of a circuit breaker. Circuit breakers focus specifically on safety by interrupting the electrical flow during fault conditions to protect both the wiring and connected devices.