Air Circuit Breaker (Electrical) An Air Circuit Breaker (ACB) is a high-performance electrical device used to protect power systems from damage caused by overloads, short circuits, and faults. It operates by interrupting the current flow using air as the arc extinguishing medium, ensuring safe and reliable circuit isolation in low-voltage applications. ACBs are widely used in industrial and commercial power distribution systems due to their durability, precision, and ability to handle high current ratings.
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