Air Circuit Breakers

Air circuit breakers (ACB) are used for protection of generators with large powers, motor, capacitor groups and transformers, as well as general protection of factories, shopping malls, business centers etc. Mainly two types are used in the market, fixed and withdrawable types.


Maximum safety is ensured in many different ways, such as racking-out with the door closed, degree of protection towards the outside up to IP54, various different safety locks and double insulation. The innovative pole structure guarantees complete insulation between phases, and between the phases and neutral, while ensuring full possibility of inspection of the arcing chamber and the main contacts.


Our ACBs are the latest technology to enhance both performance and safety. Easy to install, with user-friendly, intuitive operation and environment-friendly design, these are, quite simply, circuit breakers of their time. Our ACBs are low voltage ultra-rapid opening circuit breakers. Its fault detection rate and its reaction speed mean that it will stop a short circuit from developing. As a result, this is the key component in very high power installations equipped with a number of power sources connected in parallel.


The ACBs truly come into its own when short circuit currents can reach very high levels and when continuity of service is a must: offshore installations, cement plants, petrochemical industry. It is also especially suited to electrical installations on board merchant.


Inquiry information needed:

Brand codes

Pole numbers


Rated current

Short circuit breaking capacity

Short circuit current adjustment

Over current adjustment



Our brands:

ABB, Schneider, Siemens, Eaton, GE, Chint, LG, Lovato, Socomec and Federal.