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.

50H-3 Federal Pioneer Air Breaker 2000A 600V MO/DO

Federal Pioneer 50H-3 Air circuit breaker; 2000 amp frame, 2000 amp trip, 600 volt, three pole, AC pro trip type T361-V2, manually operated (120 volt AC), draw-out, used electrically OK.
SKU: 50H-3 EMSCO#20808

50H-3 Federal Pioneer Air Breaker 2000A 600V MO/DO

Federal Pioneer 50H-3 Air circuit breaker; 2000 amp frame, 2000 amp trip, 600 volt, three pole, AC pro trip type T361-V2, manually operated, draw-out. Used electrically OK.
SKU: 50H-3 EMSCO#20809

50H-3 Federal Pioneer Air Breaker 2000A 600V MO/DO

Federal Pioneer 50H-3 Air circuit breaker; 2000 amp frame, 2000 amp trip, 600 volt, three pole, AC pro trip type T361-V2, manually operated (120 volt AC), draw out. Used electrically OK.
SKU: 50H-3 EMSCO#20810

50H-3 Federal Pioneer Air Breaker 2000A 600V MO/DO

Federal Pioneer 50H-3 Air circuit breaker; 2000 amp frame, 2000 amp trip, 600 volt, three pole, AC pro trip type T361-V2, manual operated, draw-out. Used electrically OK.
SKU: 50H-3 EMSCO#20811

50H-2 Federal Pioneer Air Breaker 600V 1600A EO/DO LSIG

Federal Pioneer 50H-2 Air breaker; 600 volt, 1600 amp, electrically operated, draw-out, LSIG #21901, 120 VAC, FPE 30 AC over current relay type SD-61R trip, LSIG functions. Used electrically OK.
SKU: 50H-2-EO-DO-LSIG-#21901

50DH-VR-75U Eaton Air Breaker 1200A 4.76KV EO/DO

Eaton 50DH-VR-75U Air Breaker; 1200 amp, 4.76 KV. Electrically operated, draw-out, #22895, 100-140 VDC, motor volts. Used electrically OK.
SKU: 50DH-VR-75U-#22895

50DH250E WESTINGHOUSE 5KV 1200A EO/DO Air Circuit Breaker

Westinghouse 50DH250E air circuit breaker; 1200 amp, 5 KV rated electrically operated, draw-out, closing voltage: 125 volt DC, date: 02/73, used as is.
SKU: 50DH250E -EMSCO #19941

50DH250E WESTINGHOUSE 5KV 1200A EO/DO Air Circuit Breaker

Westinghouse 50DH250E air circuit breaker; 1200 amp, 5 KV rated, electrically operated, draw-out. Closing voltage: 125 volt DC (3), three bent stab fingers, used as is.
SKU: 50DH250E-EMSCO #19940

WPS-40 GE WavePro 4000A 600V MVT+ LSIG Air Circuit Breaker MO/DO

General Electric Type WPS-40 WavePro low-voltage power circuit breaker; cat# WE1NAQVXXXAXXXX, 4000 amp frame, 635 volt max, 4000 amp rating plug: TR40B4000 Micro Versa trip plus trip unit with LSG (K440LSIG). Manually operated, draw-out, sold used as-is.
SKU: WPS-40 #19959

WPS-40 GE WavePro 4000A 600V MVT+ LSIG Air Circuit Breaker MO/DO

General Electric Type WPS-40 WavePro low-voltage power circuit breaker; cat# WE1NAQVXXXAXXXX, 4000 amp frame, 635 volt max, 4000 amp, rating plug: TR40B4000, Micro Versa trip plus trip unit with LSG (K440LSIG). Manually operated, draw-out, sold used as-is.
SKU: WPS-40 #19958

50DH75 Westinghouse Air Breaker 1200A 4.76KV EO/DO

Westinghouse 50DH75 Air Breaker; 1200 amp, 4.76 KV, electrically operated, draw-out, #22896, 125 VDC closing volts. Used electrically OK.
SKU: 50DH75-#22896

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22742, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22742

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22741, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22741

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22740, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22740

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22739, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22739

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22738, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22738

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22737, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22737

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22736, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22736

150DHP500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22735, closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22735

150DHP1000 Westinghouse Air Breaker 3000A 15KV EO/DO

Westinghouse 150DHP1000 Air Breaker; 3000 amp, 15 KV, electrically operated, draw-out, #22884, 125 DC motor volts. Used electrically OK.
SKU: 150DHP1000-#22884

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.