Air Circuit Breakers (ACBs) are electrical devices used to protect electrical circuits and equipment from damage caused by overcurrent, short circuits, and other electrical faults. They operate by breaking the circuit when a fault is detected, using air as the arc extinguishing medium. ACBs are typically used in low voltage applications (up to 1000V) and are commonly found in industrial plants, commercial buildings, and electrical panels. These breakers offer reliable protection and are often equipped with advanced features such as adjustable trip settings, remote control, and fault indication. They are designed for easy maintenance, long service life, and can handle high current loads, making them suitable for heavy-duty applications.