Air Circuit Breakers

While our website showcases a large assortment of our products, it does not reflect the complete inventory of products currently available. For real-time availability and to ensure we can meet your specific needs, please contact our sales team at 1-800-328-1842. New products arrive daily and our knowledgeable staff are happy to assist you in locating the exact item(s) you need.

50DHP250 Westinghouse Air Breaker 2000A 5KV EO/DO

Westinghouse 50DHP250 Air Breaker; 2000 amp, 5 KV. Electrically operated, draw-over, closing volts: 190-250 AC, motor volts: 230 AC. Used sold electrically OK.
SKU: 50-DHP-250-EO-DO-#22770

DB100 Westinghouse Air Breaker 4000A 600V EO/DO LS

Westinghouse DB100 Air Breaker; 4000 amp, 600 volt. Electrically operated, draw-out, over current trip device 4000 amp with LS functions. Used electrically OK.
SKU: DB100-EO-DO-LS-#22346

DB-15 Westinghouse Air Breaker 600V 225A EO/DO LSIG

Westinghouse DB-15 Air Breaker; 600 volt, 225 amp. Electrically operated, draw-out, AC-Pro trip unit with LSIG functions. Used electrically OK.
SKU: DB-15-EO-DO-LSIG-#22863

DB-15 Westinghouse Air Breaker 600V 225A EO/DO LSIG

Westinghouse DB-15 Air Breaker; 225 amps, 600 volts. Electrically operated, draw-out, AC-Pro trip unit with LSIG functions. Used electrically OK.
SKU: DB-15-EO-DO-LSIG-#22864

DB-15 Westinghouse Air Breaker 600V 225A EO/DO LSIG

Westinghouse DB-15 Air Breaker; 600 volts. Electrically operated, draw-out, AC-Pro trip unit with LSIG functions. Used electrically OK.
SKU: DB-15-EO-DO-LSIG-#22865

DB-15 Westinghouse Air Breaker 600V 225A EO/DO LSIG

Westinghouse DB-15 Air Breaker; 600 volt, 225 amp. Electrically operated, draw-out, AC-Pro trip unit with LSIG functions. Used electrically OK.
SKU: DB-15-EO-DO-LSIG-#22866

DB-15 Westinghouse Air Breaker 600V 225A EO/DO LSIG

Westinghouse DB-15 Air Breaker; 600 volt, 225 amp. Electrically operated, draw-out, AC-Pro trip unit with LSIG functions. Used electrically OK.
SKU: DB-15-EO-DO-LSIG-#22867

DB-25 W-HSE 600A 3P 600V MO/DO Air Circuit Breaker

Westinghouse DB-25 Air Circuit Breaker; 600 amp, 3 pole, 600 volt. Manually operated, draw-out, 600 amp C.T.'s. Sold used as-is.
SKU: DB-25 - EMSCO # 19632

DB-25 Westinghouse 600A 600V MO/DO Air Circuit Breaker LI

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt, three pole, amptector trip: L-I functions. Manually-operated, draw-out. Used E-OK.
SKU: DB-25 # 20488

DB-25 Westinghouse 600A 600V MO/DO Air Breaker

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out. Used electrically OK.
SKU: DB-25 # 20202

DB-25 Westinghouse 600A 600V MO/DO Air Breaker LIG

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, 3 - position RMS-R 500 with LIG functions, 600 amp plug # PR6A06A600. Used electrically OK.
SKU: DB-25 # 20472

DB-25 Westinghouse 600A 600V MO/DO Air Breaker LIG

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, 3 - position RMS-R 500 with LIG functions, 600 amp plug # PR6A06A600. Used Electrically OK.
SKU: DB-25 # 20473

DB-25 Westinghouse 600A 600V MO/DO Air Breaker LIG

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, 3 - position RMS-R 500 with LIG functions, 600 amp plug # PR6A06A600. Used electrically OK.
SKU: DB-25 # 20474

DB-25 Westinghouse 600A 600V MO/DO Air Breaker LIG

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, 3 - position RMS-R 500 with LIG functions, 600 amp plug # PR6A06A600. Used electrically OK.
SKU: DB-25 # 20476

DB-25 Westinghouse 600A 600V MO/DO Air Breaker LIG

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, 3 - position RMS-R 500 with LIG functions, 600 amp plug # PR6A06A600. Used electrically OK.
SKU: DB-25 # 20477

DB-25 Westinghouse 600A 600V MO/DO Air Breaker

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, single position. Used electrically OK.
SKU: DB-25 # 20449

DB-25 Westinghouse 600A 600V MO/DO Air Breaker

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, single position. Used electrically OK.
SKU: DB-25 # 20450

DB-25 Westinghouse 600A 600V MO/DO Air Breaker

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, single position. Used electrically OK.
SKU: DB-25 # 20452

DB-25 Westinghouse 600A 600V MO/Stationary Air Breaker

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, stationary, single position. Used electrically OK.
SKU: DB-25 # 20445

DB-25 Westinghouse 600A 600V MO/Stationary Air Breaker

Westinghouse DB-25 air circuit breaker; 600 amp, 600 volt. Manually operated, stationary, single position. Used electrically OK.
SKU: DB-25 # 20447

Used and Refurbished Air Circuit Breakers

Air Circuit Breakers (ACB’s) use air to extinguish electrical sparks. When a fault occurs, these circuit breakers disrupt the circuit by releasing a burst of compressed air, extinguishing the arc. This isolates the defective section of the system, preventing damage. High-pressure air cools the electrical arc.

Inventory Selection of Air Circuit Breakers to Match and Replace Yours

Our inventory features a wide range of air circuit breaker types to match and replace your existing electrical equipment seamlessly, ensuring compatibility and optimal performance for different applications. Whether you need a specific voltage rating, current capacity, or unique design, we have options that suit your needs.

New and Refurbished Air Circuit Breakers -- It's Your Choice

We offer customers the flexibility to choose between new and refurbished ACB’s. New circuit breakers ensure the latest technology and warranties, while refurbished breakers provide cost-effective solutions without compromising quality, backed by thorough inspections and testing.

Electrical testing equipment Certifies Quality and Performance

Our products undergo rigorous electrical testing using the newest test equipment to guarantee quality, safety, and optimal performance. Each air circuit breaker is thoroughly inspected, ensuring it meets industry standards and specifications.

Specifications Based on Your Power Requirements

To specify the right air circuit breaker, consider power requirements such as voltage, current rating, breaking capacity, and the type of application. In most cases, air circuit breakers are used where there’s high risk of fire or explosion. Air Breakers are typically used for low voltages up to 15KV.

Our expert team can guide you through selecting the most suitable breaker for your specific power needs.

What Type of Air Circuit Breaker Do You Need?

Air Breaker Type

How the Breaker Type Works

Applications

Plain Break Air Breaker

Utilizes a pair of contacts within a chamber filled with air to interrupt the electrical circuit. When the contacts separate, an arc forms and is extinguished by the surrounding air.

Commonly used in low-voltage applications like residential and commercial settings, protecting against overcurrents and short circuits.

Magnetic Blowout Air Breaker

Uses a magnetic field to drive the arc away from the contacts, ensuring quick interruption and extinguishing of the arc. The magnetic force redirects the arc into a chute, effectively extinguishing it.

Often found in industrial and heavy-duty settings due to their capability to handle high fault currents, making them ideal for heavy machinery and large-scale equipment protection.

Air Chute Breaker

Uses a series of parallel plates to create a chute for the arc. When the contacts open, the arc is diverted into the chute, where it is elongated, cooled, and extinguished before being directed toward the exhaust vent.

Commonly applied in medium-voltage power distribution systems, particularly in substations, to protect transformers and other critical power equipment from faults and overloads.

Air Blast Breaker

Relies on a high-pressure air blast to extinguish the arc. The compressed air directed towards the arc causes rapid cooling and interruption, ensuring efficient breaking of the circuit.

Primarily utilized in high-voltage applications like power stations and critical infrastructure such as data centers and hospitals, offering reliable protection against high fault currents and maintaining system integrity.