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.

DS-632 Westinghouse Air Breaker 3200A 600V MO/FM LSIG

Westinghouse DS-632 low voltage AC power circuit breaker; 3200 amp, 600 volt. Manually operated, fixed mount, Amptector I Model A with LSIG functions. Used electrically OK.
SKU: DS-632-MO-FM-LSIG-#22376

DS-632 Westinghouse Air Breaker 3200A Frame 2400A Cont. Current 600V MO/FM LSIG

Westinghouse DS-632 low voltage AC power circuit breaker; 3200 amp frame, 2400 amp, continuous current, 600 volt. Manually operated, fixed mount, Amptector I A Model with LSIG functions. Used electrically OK.
SKU: DS-632-MO-FM-#22999

DSII-608 CH-W-Hse 800A Frame 600A Rating Plug RMS510 MO/DO Air Breaker LSIG

Cutler Hammer/ Westinghouse Low Voltage AC Power Circuit Breaker DSII-608; 800 amp frame, 800 amp sensors, 600 amp rating plug (RP6D08A060), Digitrip RMS510 (S56LSIG (B)), with LSIG functions. Manually operated/ draw-out. Used electrically OK.
SKU: DSII-608 #19324

DSII-608 CH-W-Hse 800A Frame 600A Rating Plug RMS510 MO/DO Air Breaker LSIG

Cutler Hammer/ Westinghouse Low Voltage AC Power Circuit Breaker DSII-608; 800 amp frame, 800 amp sensors, 600 amp rating plug (RP6D08A060), 600 volt, Digitrip RMS510 (S56LSIG (B)), with LSIG functions. Manually operated/ draw-out. Used electrically OK.
SKU: DSII-608 #19325

DSII-620 CH-W-Hse 2000A Frame 1600A Rating Plug MO/DO Air Breaker LSIG

Cutler-hammer/ Westinghouse DSII-620 low voltage AC power circuit breaker; 2000 amp frame, 2000 amp sensor, 600 volt, 1600 amp rating plug (RP6D20A160), digitrip optim 1050 trip unit (P106LSIG), with LSIG functions. Manually operated, draw-out. Sold used as is.
SKU: DSII-620 #19313

DSII-620 Cutler-Hammer Air Breaker 2000A 600V MO/DO LSIG

Cutler-Hammer DSII-620 low voltage AC power circuit breaker; 2000 amp, 600 volt. Manually operated, draw-out, digitrip Optim 1050 with LSIG functions. Used electrically OK.
SKU: DSII-620-MO-DO-LSIG-#22803

DSL-206 SQ-D 800A-Frame MO/DO Air Breaker LSIG

Square D DSL-206 low voltage AC integrally fused power circuit breaker; 800 amp-frame with fuses. Amptector I: L-S-I-G functions, manually-operated, draw-out. Used electrically OK.
SKU: DSL-206 #20505

DSL-206 SQ-D 800A-Frame MO/DO Air Breaker LSIG

Square D DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp-frame with fuses. Amptector I: L-S-I-G functions, manually-operated, draw-out. Used electrically OK
SKU: DSL-206 #20506

DSL-206 SQ-D 800A-Frame MO/DO Air Breaker LSIG

Square D DSL-206 Low Voltage AC Integrally Fused Circuit Breaker; 800 amp-frame. Amptector I: L-S-I-G functions, manually-operated, draw-out. Used electrically OK.
SKU: DSL-206 #20507

DSL-206 SQ-D 800A-Frame 600V MO/DO Air Breaker LSIG

Square D DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp, 600 volt, 3 pole. Amptector I: L-S-I-G, Manually-operated, draw-out. Used electrically OK.
SKU: DSL-206 #20508

DSL-206 SQ-D 800A-Frame 600V MO/DO Air Breaker LSIG

Square D DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp, 600 volt, 3 pole. Amptector I: L-S-I-G, Manually-operated, draw-out. Used electrically OK.
SKU: DSL-206 #20509

DSL-206 SQ-D 800A-Frame 600V MO/DO Air Breaker LSIG

Square D DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp, 600 volt, 3 pole. Amptector I: L-S-I-G, Manually-operated, draw-out. Used electrically OK.
SKU: DSL-206 #20510

DSL-206 Square D 800A Frame/300A Sensors Fused MO/DO Air Breaker LSIG

Square D DSL-206 low voltage AC integrally fused power circuit breaker; 800 amp frame, 300 amp sensors. Manually operated, draw-out, Amptector I-A model with LSIG functions fused. Used electrically OK.
SKU: DSL206 EMSCO #20866

DSL-206 Square D 800A Frame/400A Current Sensors 600V Fused MO/DO Air Breaker LSIG

Square D DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp frame, 400 amp sensors, 600 volt. Manually operated, draw-out, Amptector I-A Model with LSIG functions, 1200 amp fuses. Used Electrically OK.
SKU: DSL206 #20669

DSL-206 Square D 800A Frame/400A Current Sensors 600V Fused MO/DO Air Breaker LSIG

Square D DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp frame, 400 amp sensors, 600 volt. Manually operated, draw-out, Amptector I-A Model with LSIG functions, 1200 amp fuses. Used electrically OK.
SKU: DSL206 #20670

DSL206 Square D 800A Frame/400A Sensors Fused MO/DO Air Breaker LSIG

Square D DSL206 low voltage AC integrally fused power circuit breaker; 800 amp frame, 400 amp sensors. Manually operated, draw-out, Amptector I-A Model with LSIG functions. Used electrically OK.
SKU: DSL206 EMSCO #20868

FPS5-50 FPE 1600A Frame 600V MO/DO Air Breaker LSIG

Federal Pacific FPS5-50 Low Voltage Power Circuit Breaker; 1600 amp, 50/60 frame, 1600 amp C.T. Manually operated, draw-out, FPE over current rely, type SSD with LSIG functions. Used Electrically OK.
SKU: FPS5-50 #20415

FPS5-50 FPE 1600A Frame 600V Air Circuit Breaker MO/DO LSIG

Federal Pacific FPS5-50 Low Voltage Power Circuit Breaker; 1600 amp, 50/60 frame, 1600 amp C.T. Manually operated, draw-out, FPE over current rely, type SSD with LSIG functions. Used Electrically OK.
SKU: FPS5-50 #20416

FPS5-50 FPE 1600A Frame 600V Air Circuit Breaker MO/DO LSIG

Federal Pacific FPS5-50 Low Voltage Power Circuit Breaker; 1600 amp, 50/60 frame, 1600 amp C.T. Manually operated, draw-out, FPE over current rely, type SSD with LSIG functions. Used electrically OK.
SKU: FPS5-50 #20417

FPS5-50 FPE 1600A Frame 600V Air Circuit Breaker MO/DO LSIG

Federal Pacific FPS5-50 Low Voltage Power Circuit Breaker; 1600 amp, 50/60 frame, 1600 amp C.T. Manually operated, draw-out. FPE over current rely, type SSD with LSIG functions. * 1 Broken Terminal Strip* Used Electrically OK.
SKU: FPS5-50 #20418

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.