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Air Circuit Breaker

  • Air circuit breaker is a circuit breaker for the purpose of protecting low voltage circuit, mainly for energizing and cutting off high current.
  • It is used as the master of a factory and building, and as a main circuit breaker of a ship, and it is possible to attach various accessories according to the purpose.
  • We also have a draw-out installation method with high maintainability.

We not only supply ACBs but also do the maintenance and testing at site for all Air Circuit breakers.

One of the components of an electrical installation that often get completely overlooked is the primary switch gear and means of isolation. In most installations, and particularly those serving larger facilities, the likelihood is that the main means of isolation and protection for the system is by means of an ‘Air Circuit Breaker’ which is a mechanical device of varying designs depending on brand and age.

This equipment can remain in an ‘On’ or ‘Closed’ position for months and years and without being activated and without regular maintenance; can fail to operate without warning with potential, major consequences.

The switch gear, be it Siemens, Schneider Electric, Eaton, GEC, Mitsubishi or other manufacturers, is designed to act as the primary point of isolation and as a protection in the event of a fault or over current occurring on the system, thereby safeguarding the system up-line. Failure to operate can lead to serious consequences.

In addition, over current relay/ trip units can be Secondary Injection Tested using the appropriate test equipment for each brand of equipment to ensure that tripping parameters are still within manufacturer’s tolerances and that the unit will perform as designed and protect site assets/ systems.

In addition to the maintenance of ACB’s, we can carry out similar inspections and tests on Moulded Case Circuit Breakers (MCCB) to ensure correct tripping characteristics and performance.

Contact Us for ACB Maintenance and ACB Supply.