What is the main purpose of circuit breakers?

The main purpose of circuit breakers is to protect circuits from overload and short circuits. They are designed to interrupt the flow of current when it exceeds a certain threshold, which can prevent damage to wiring, devices, and reduce the risk of fire. When an overload occurs, the circuit breaker will automatically trip to cut off the electrical supply, thereby safeguarding both the electrical components and the entire circuit.

This function is critical in maintaining the safety and functionality of electrical systems, as constant exposure to overload can lead to deterioration or failure of electrical components. Additionally, short circuits can create very high currents, which can be hazardous. Therefore, the ability of circuit breakers to interrupt these conditions effectively is what makes them a vital part of any electrical system.