The Air Circuit Breaker (ACB) is a low-voltage power protection device designed for main power distribution systems, ensuring safe and reliable control of electrical circuits under normal operation and fault conditions. By using air as the arc-extinguishing medium, the ACB is capable of interrupting high short-circuit currents and maintaining stable performance in demanding electrical environments.

Equipped with an advanced electronic trip unit, the ACB provides accurate and adjustable protection functions, including overload, short-circuit, instantaneous, and earth fault protection. The ACB is available in both fixed and withdrawable (draw-out) types, offering clear position indication and multiple accessories to meet different control and automation requirements.