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-50 Westinghouse Air Circuit Breaker 1600A 600V MO/DO LS

Westinghouse DB-50 Air Circuit Breaker; 1600 amp frame, 600 volt. Manually operated, draw-out, 3 - position, Digitrip RMS/R 500 (#RH53CLS) with LS functions, 1600 amp rating plug #PR6A16A160. Used electrically OK.
SKU: DB-50 # 20501

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

DS-416 Westinghouse Air Breaker 600V 1600A MO/DO LS

Westinghouse DS-416 low voltage AC power circuit breaker; 600 volt, 1600 amp. Manually operated, draw-out, 300 amp continuous current, Digitrip RMS 500 with LS functions. Used electrically OK.
SKU: DS-416-MO-DO-LS-#23040

DS-416 Westinghouse Air Breaker 600V 1600A MO/DO LS

Westinghouse DS-416 low voltage AC power circuit breaker; 600 volt, 1600 amp. Manually operated, draw-out, 300 amps continuous current, Digitrip RMS 500 with LS functions. Used electrically OK.
SKU: DS-416-MO-DO-LS-#23041

DS-416 Westinghouse Air Breaker 600V 1600A MO/DO LS

Westinghouse DS-416 low voltage AC power circuit breaker; 600 volt, 1600 amp. Manually operated, draw-out, 300 amp continuous current, Digitrip RMS 500 with LS functions. Used electrically OK.
SKU: DS-416-MO-DO-LS-#23042

DS-416 Westinghouse Air Breaker 600V 1600A MO/DO LS

Westinghouse DS-416 low voltage AC power circuit breaker; 600 volt, 1600 amp, Manually operated, draw-out, 1200 amp continuous current, Digitrip RMS 500 with LS functions. Used electrically OK.
SKU: DS-416-MO-DO-LS-#23077

DS-416 Westinghouse Air Breaker 600V 1600A MO/DO LS

Westinghouse DS-416 low voltage AC power circuit breaker; 600 volt, 1600 amp. Manually operated, draw-out, 300 amp continuous current, Digitrip RMS 500 with LS functions. Used electrically OK.
SKU: DS-416-MO-DO-LS-#23078

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

DS-632 Westinghouse low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector II A Model SE with LS functions. Used electrically OK.
SKU: DS-632-EO-DO-#22917

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

Westinghouse DS-632 low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector II A Model SE with LS functions. Used electrically OK.
SKU: DS-632-EO-DO-#22918

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

Westinghouse DS-632 low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector II A Model SE with LS functions. Used electrically OK.
SKU: DS-632-EO-DO-#22919

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

Westinghouse DS-632 low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector II A Model SE with LS functions. Used electrically OK.
SKU: DS-632-EO-DO-#22920

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

Westinghouse DS-632 low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector Model with LS functions. Used electrically used OK.
SKU: DS-632-EO-DO-#22921

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

Westinghouse DS-632 low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector Model with LS functions. Used electrically OK.
SKU: DS-632-EO-DO-#22922

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

Westinghouse DS-632 low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector Model with LS functions. Used electrically OK.
SKU: DS-632-EO-DO-#22923

DS-632 Westinghouse Air Breaker 600V 3200A EO/DO LS

Westinghouse DS-632 low voltage AC power circuit breaker; 600 volt, 3200 amp. Electrically operated, draw-out, 120 VAC, Amptector Model with LS functions, Used electrically OK.
SKU: DS-632-EO-DO-#22924

DS-840 Westinghouse 4000A Frame 4000A Sensors LS MO/DO Air Breaker

Westinghouse DS-840 low-voltage AC power circuit breaker; 4000 amp frame, 4000 amp sensors. Manually Operated/ draw-out, 120V AC shunt trip, Amptetor II-A Model SE with LS functions. Used electrically OK.
SKU: DS840 EMSCO #20623

DS-840 W-HSE 4000A 600V MO/DO Air Breaker LS

Westinghouse DS-840 low voltage AC power circuit breaker; 4000 amp, 600 volt. Manually operated, draw-out, Amptector II: L-S functions. Used electrically OK.
SKU: DS-840

DSL-206 Westinghouse 800A Frame/150A Sensors 600V Fused MO/DO Air Breaker LS

Westinghouse DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp frame, 150 amp sensors, 600 volt. Manually operated, draw-out, Amptector II-A Model SE with LS functions, fused 1600 amp fuses. Used Electrically OK.
SKU: DSL206 #20558

DSL-206 Westinghouse 800A Frame/200A Sensors 600V Fused MO/DO Air Breaker LS

Westinghouse DSL206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp frame, 200 amp sensors, 600 volt. Manually operated, draw-out, Amptector II-A Model SE with LS functions, fused 1600 amp fuses. Used electrically OK.
SKU: DSL206 #20557

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.