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.

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-75 Westinghouse 3000A 600V EO/Stationary Air Breaker

Westinghouse DB-75 air circuit breaker; 3000 amp, 600 volt AC. Electrically operated, stationary, 400 VDC close coil, no trip unit. Used electrically OK.
SKU: DB-75 #20453

DB-75 Westinghouse Air Breaker 600V 3000A EO/DO LSIG

Westinghouse DB-75 Air Breaker; 600 volt, 3000 amp. Electrically operated, draw-out, Digitrip RMS/R500 with LSIG functions. Used electrically OK.
SKU: DB-75-EO-DO-#22902

DB-75 W-HSE 3000A 600V EO/DO Air Breaker LIG

Westinghouse DB-75 air circuit breaker; 3000 amp, 600 volt AC. Electrically operated, draw-out with L-I-G functions. Used electrically OK.
SKU: DB-75 #19305

DB-75 W-HSE 3000A 600V EO/DO Air Breaker

Westinghouse DB-75 Air Circuit Breaker; 3000 amp, 600 volt, 3 pole. Micro-Verse trip, electrically-operated, draw-out. Used electrically OK.
SKU: DB-75 #20491

DB-75 W-HSE 3000A 600V EO/DO Air Breaker

Westinghouse DB-75 Air Circuit Breaker; 3000 amp, 600 volt, 3 pole. Electrically-operated, draw-out. Used electrically OK.
SKU: DB-75 #20493

DS-206 Westinghouse 800A 600V EO/DO Air Breaker

Westinghouse DS-206 low voltage AC power circuit breaker; 800 amp, 600 volt. No trip unit installed, electrically operated, draw-out, 120 volt AC control. Used electrically OK.
SKU: DS-206 #21319

DS-206 Westinghouse Air Breaker 600V 800A EO/DO LI

Westinghouse DS-406 low voltage AC power circuit breaker; 600 volt, 800 amp. Electrically operated, draw-out, 125 DC shunt trip, Amptector II A Model DU with LI function. Used electrically OK.
SKU: DS-206-EO-DO-LI-#23039

DS416 Westinghouse 1600A Frame/1200A Sensors 600V Air Breaker EO/DO LS

Westinghouse DS-416 low voltage AC power circuit breaker; 1600 amp frame, 1200 amp sensors. Electrically operated, draw-out, 120 volt AC shunt trip, 120 volt AC close coil, Amptector I-A model SE with LS functions. Used electrically OK.
SKU: DS416 #20654

DS416S WESTINGHOUSE 1600 AMP FRAME EO/DO AIR BREAKER

Westinghouse DS-416S low-voltage AC power circuit breaker; 1600 amp frame, opti-trip II RMS micro-controller based trip unit, 120 volt shunt trip, electrically operated, draw-out. Sold used as is.
SKU: DS416S #20205

DS-420 Westinghouse 2000A 600V Air Circuit Breaker EO/DO LI

Westinghouse DS-420 low voltage AC power circuit breaker; type DS, 2000 amp frame, 635 volt max. Electrically operated, draw-out, 120 volt AC trip, 120 volt AC close, Ampector I with LI functions, 2000 amp CT. Sold used as-is.
SKU: DS420 EMSCO# 20271

DS-420 WESTINGHOUSE 2000A 635V Air Circuit Breaker EO/DO LI

Westinghouse DS-420 low voltage AC power circuit breaker; type DS, 2000 amp frame, 635 volt max. Electrically operated, draw-out, 120 volt AC trip, 120 volt AC close, Ampector I with LI functions, 2000 amp CT. Sold used as-is.
SKU: DS420 EMSCO# 20276

DS-420 Westinghouse 2000A 600V Air Circuit Breaker EO/DO LI

Westinghouse DS-420 low voltage AC power circuit breaker; type DS, 2000 amp frame, 2000 amp sensors, 600 volt max. Electrically operated, draw-out, 120 volt AC shunt trip, 120 volt AC close circuit, Amptector I-A Model with LI functions. Sold used electrically OK.
SKU: DS420 EMSCO# 20616

DS-420 Westinghouse 2000A 600V Air Circuit Breaker EO/DO LSIG

Westinghouse DS-420 low voltage AC power circuit breaker; type DS, 2000 amp frame, 2000 amp sensors, 600 volt max. Electrically operated, draw-out, 120 volt AC shunt trip, 120 volt AC close circuit, Ampector I-A model with LSIG functions. Sold used electrically OK.
SKU: DS420 EMSCO# 20652

DS420 WESTINGHOUSE 2000A/2000A EO/DO LI AIR BREAKER SURPLUS IN BOX

Westinghouse DS-420 low voltage AC power circuit breaker; 2000 amp frame, 2000 amp rating plug & sensors, draw-out, electrically operated, shunt trip: 120 VAC, spring release: 120 VAC, motor circuit: 120 VAC, Ampector 1-A model with LI functions. Surplus in box.
SKU: DS420 EMSCO #20851

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.