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Air Circuit Breakers

Bay Breakers Online is the place to go for new, used, and hard to find obsolete air circuit breakers. We provide a comprehensive inventory of air breakers and other switchgear from the finest manufacturers in the electrical hardware industry. General Electric, ITE, and Westinghouse models are in stock in both manually and electrically operated units.

Air circuit breakers have been used for many years in large demanding industrial or power distribution applications. They offer current protection ratings of up to 10,000 amps and many feature fully adjustable trip thresholds and delay settings. Air circuit breakers break the circuit by using compressed air to extinguish the current arc or by rapidly swinging the contacts into a small sealed chamber where the sudden rush of escaping air blows out the arc.

These breakers are often used for main power distribution in large industrial plants and are usually controlled electronically or via microprocessor. Many are used in high voltage switchgear applications. Air circuit breakers both protect the system from abnormal current surges and perform the distribution function of switching from one electric power line to another. Bay Breakers Online offers many models of air breakers, switchgear components, and other electrical supplies at the most attractive prices online.

Electrical power distribution systems and their various components are protected by high performance air circuit breakers from several problems, including reverse current flow, over-voltage conditions, under-voltage conditions, unbalanced phase voltages, and over-current conditions. These issues can result in nuisance tripping, expensive equipment down time, dangerous electrical fires, and electrocution injury to personnel. Bay Breakers Online supplies reliable air breakers from the biggest names in the electrical supply business, including Siemens, GE, Cutler Hammer, and Westinghouse.

The following are a few models among the many rugged air breakers available to our valued customers from Bay Breakers Online:

WESTINGHOUSE: DSL206, DS206, DS416, DS420, DS632, DBL, DB50, DB75

ITE: K-DON600, K-600S, K1600, K1600S, K-DON1600, K-3000, K-3000S, K-DON-4000S

GENERAL ELECTRIC: AKR-6S-30H, AKRU-66D-30, AKRU-7D-30S, AKRU6D-30, AKR-10D-50, AKR-6D-50H, AKR-7D-100, AKR-6D-75

Air breaker models are rated by their voltage, current interrupting capabilities, recovery voltage, insulation level, and trip delay. Air circuit breakers are frequently found in use with power distribution systems and are rated to handle several thousand amperes of continuous current. Their operating mechanisms are usually exposed to the environment making use of the surrounding atmosphere for convection cooling to keep within safe temperature limits.

A typical air breaker is part of the main contact assembly connecting the electrical power source to the power consumer (also known as the ‘load’), often seen along power lines. When the main contact is open the current path is interrupted along the line and when it is closed the circuit is complete allowing power to travel from the source to the load. For many air circuit breakers the mechanism for opening or closing the circuit contacts consists of a series of powerful springs operated by a manually or electrically controlled actuation device. Some of these breaker mains are equipped with bell alarms to either locally or remotely warn of circuit interruption. Both fixed air breakers and drawer-type breakers are available that permit easy removal and maintenance.

Check out our online inventory or contact us to find out more about our wide array of name brand air circuit breakers. Bay Breakers Online is also home to affordable new and refurbished vacuum circuit breakers, panelboard switches, motor controls, and the world’s most comprehensive inventory of circuit breakers.

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Air Circuit Breakers

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