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.

100H-3 Federal Pioneer 4000A Air Breaker EO/DO LSIG

Federal Pioneer 100H-3 air circuit breaker; 4000 amp, electrically operated, draw-out, LSIG with cell #21904, 4000 amps, 600 volts, three poles, 120 VAC USR RMS over current relay LSIG functions, $8500 without cell. Used electrically OK.
SKU: 100H-3-EO/DO-LSIG-Emsco#21904
$10,000.00

100H-3 Federal Pioneer 4000A EO/DO Air Breaker LSIG w/cell

Federal Pioneer 100H-3 air circuit breaker; 4000 amp, LSIG with cell #21905, 4000 amps, 600 volts, three poles, 120 VAC, USR RMS over current relay LSIG functions, $8500 without cell. Electrically operated, draw-out. Used electrically OK.
SKU: 100H-3-EO/DO-LSIG-Emsco#21905
$10,000.00

100H-3 Federal Pioneer Air Breaker 4000A EO/DO LSIG w/cell

Federal Pioneer 100H-3 air circuit breaker; 4000 amp, electrically operated, draw-out. LSIG with cell #21903, 4000 amps, 600 volts, three poles, 120 VAC USR RMS over current relay LSIG functions, $8500 without cell. Used electrically OK.
SKU: 100H-3-EO/DO-LSIG-Emsco#21903
$10,000.00

15 HK ITE Gould 15KV 1200A EO/DO Air Circuit Breaker

ITE Imperial Corporation Type 15 HK Power circuit breaker; rated KV: 13.8, maximum KV: 15, impulse KV: 95, frequency: 60, rated continuous current: 1200 amp, rated Sym. MVA 11.5-15.0 KV - 500 rated Sym. short-circuit current - 19300 asymmetrical rating factor 1.2, rated Interr. time: 5 cycles, charge: 115-AC, close: 115-AC, trip: 250-DC model, 03-B used as-is.
SKU: 15HK #19573
$6,500.00

150 DHP 500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150 DHP 500 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22733 closing range: 40-50 DC, trip voltage: 48 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22733
$3,500.00

150 DHP 500 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150 DHP 500 Air breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22670 closing volts: 90-130 DC. Used electrically OK.
SKU: 150DHP500-EO-DO-#22670
$3,500.00

150DH1000E Westinghouse Air Breaker 15KV 1200A EO/DO

Westinghouse 150DH1000E Air Breaker; 15 KV, 1200 amp, electrically operated, draw-out, #23008, 125 DC closing volts, SE2A type mechanism. Used electrically operated.
SKU: 150DH1000E-#23008
$10,500.00

150DH1000E Westinghouse Air Breaker 15KV 1200A EO/DO

Westinghouse 150DH1000E Air Breaker; 15 KV, 1200 amp, electrically operated, draw-out, #23009, 125 DC closing volts, SE2A type mechanism. Used electrically OK.
SKU: 150DH1000E-#23009
$10,500.00

150DHP WESTINGHOUSE 15KV 1200A DO DUMMY Air Circuit Breaker

Westinghouse 150DHP air circuit breaker; 1200 amp, 15 KV rated, draw-out -dummy breaker. Used as is.
SKU: 150DHP-DUMMY-EMSCO# 19944
$3,000.00

150DHP1000 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP1000 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22881, 125 VDC motor volts. Used electrically OK.
SKU: 150DHP1000-#22881
$10,500.00

150DHP1000 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP1000 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22882, 125 VDC motor volts. Used electrically OK.
SKU: 150DHP1000-#22882
$10,500.00

150DHP1000 Westinghouse Air Breaker 1200A 15KV EO/DO

Westinghouse 150DHP1000 Air Breaker; 1200 amp, 15 KV, electrically operated, draw-out, #22886, 125 DC motor volts. Used electrically OK.
SKU: 150DHP1000-#22886
$10,500.00

150DHP1000 Westinghouse Air Breaker 2000A 15KV EO/DO

Westinghouse 150DHP1000 Air Breaker; 2000 amp, 15 KV, electrically operated, draw-out, #22887, 125 DC motor volts. Used electrically OK.
SKU: 150DHP1000-#22887
$12,000.00

150DHP1000 Westinghouse Air Breaker 2000A 15KV EO/DO

Westinghouse 150DHP1000 Air Breaker; 2000 amp, 15 KV, electrically operated, draw-out, #22883, 125 DC motor volts. Used electrically OK.
SKU: 150DHP1000-#22883
$12,000.00

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
$25,000.00

150DHP500 WESTINGHOUSE 15KV 1200A EO/DO Air Circuit Breaker

Westinghouse 150DHP500 air circuit breaker; 1200 amp, 15 KV rated, electrically operated, draw-out, closing voltage: 105-130 VDC, trip: 125 VDC. Used as-is.
SKU: 150DHP500- EMSCO# 19945
$3,500.00

150DHP500 WESTINGHOUSE 15KV 1200A EO/DO Air Circuit Breaker

Westinghouse 150DHP500 air circuit breaker; 1200 amp, 15 KV rated, electrically operated, draw-out, closing voltage: 105-130 VDC, trip - 125 VDC. Used as-is.
SKU: 150DHP500-EMSCO#19946
$3,500.00

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

Westinghouse 150DHP500 air circuit breaker; 1200 amp, 15 KV rated, three pole. Control: 48 volt DC electrically operated, draw-out. Sold used as is.
SKU: 150DHP500-EMSCO#19929
$3,500.00

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

Westinghouse 150DHP500 air circuit breaker; 1200 amp, 15 KV rated, three pole. Control: 48 volt DC, electrically operated, draw-out. Sold used as is.
SKU: 150DHP500 - EMSCO #19933
$3,500.00

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

Westinghouse 150DHP500 air circuit breaker; 1200 amp, 15 KV rated, three pole. Control: 48 volt DC, electrically operated, draw-out. Used as is.
SKU: 150DHP500 - EMSCO #19934
$3,500.00

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.