An auto circuit breaker, also known as an automatic circuit breaker or an automatic reset circuit breaker, is an electrical device that automatically interrupts the flow of electric current in a circuit when it detects an overload or a short circuit. It is designed to protect electrical circuits and appliances from damage caused by excessive current. When the current flowing through a circuit exceeds the rated capacity of the circuit breaker, the breaker trips and interrupts the current flow. This prevents the circuit from overheating and potentially causing a fire. Auto circuit breakers are commonly used in residential, commercial, and industrial applications to safeguard electrical systems and equipment. Once the overload or short circuit condition is resolved, an auto circuit breaker automatically resets itself and restores the current flow. This feature eliminates the need for manual intervention to restore power to the circuit, making it convenient and efficient. Auto circuit breakers are available in various types and sizes, depending on the specific application and current rating requirements. They are typically installed in electrical distribution panels or switchboards and are an essential component of electrical safety systems.