Automatic circuit breakers are safety devices designed to protect electrical circuits from overloads and short circuits. When the current flowing through a circuit exceeds a predetermined limit, the breaker automatically interrupts the flow of electricity, preventing potential damage to wiring and connected devices. This helps to avoid electrical fires and equipment failures. These devices come in various types, including thermal, magnetic, and electronic breakers, each functioning based on different principles. Automatic circuit breakers are commonly used in residential, commercial, and industrial settings, ensuring safe and reliable electrical systems by allowing for easy reset after a trip.