What is the function of a circuit breaker?

The function of a circuit breaker is to provide a safety mechanism that interrupts the flow of electrical current when it detects an overload condition or a short circuit. This interruption is crucial for preventing potential hazards such as electrical fires, equipment damage, or personal injury. When the current flowing through a circuit exceeds its safe level, the circuit breaker automatically opens or "trips," stopping the current flow and protecting the electrical system.

Understanding the importance of circuit breakers highlights their role in maintaining safe electrical installations and preventing accidents. In contrast, increasing current flow, distributing power to outlets, or converting AC to DC pertain to different aspects of electrical systems. These functions do not align with the primary purpose of a circuit breaker, which is primarily focused on protection and safety.