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.

5-GMI-350-3000-78 Siemens 3000A 5KV AC High Voltage Air Circuit Breaker EO/DO New Surplus

Siemens Part # 5-GMI-350-3000-78 GMI AC high voltage circuit breaker; 5 KV max, 3000 amp. Electrically operated, draw-out, 100-140 VDC control voltage, MFG date 02/2009. New Surplus
SKU: 5-GMI-350-3000-78 EMSCO #20935

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

5HK ITE Air Breaker 3000A 4.76KV EO/DO

ITE 5HK Air Breaker; 3000 amp, 4.76 KV, electrical operated, draw-out, #22669, charge: 230-AC, close: 48-DC. Used electrically OK.
SKU: 5HK-EO-DO-#22669

5-HK-3000 ITE Air Circuit Breaker - 5KV 3000A EO/DO

ITE Type: 5-HK-3000 Power circuit breaker; 4,160 VAC nominal, 4,760 VAC max, 3000 amp. Electrically operated, draw-out, 230 VAC, control voltage for charge and close, 48 VDC control voltage for trip. MFG Date 11/67, sold used electrically OK.
SKU: 5-HK-3000

75H-3 FPE Air Breaker 600V 3200A Electric Operated/Stationary Mount 120VAC

FPE 75H-3 Air Breaker; 600 volt, 3200 amp. Electric operated, stationary mount, 120 VAC, used sold electrically OK.
SKU: 75H-3 Emsco #22682

ABB 6 Terminal Simple Ground & Test Unit 3000A 5-15KV

ABB 6 Terminal Simple Ground & Test Unit; 3000 amp, 5-15 KV #23127, 3000 amps, 5-15 KV. Electrically operated, draw-out, serial# 1VAFACB48106004G09. Sold used electrically OK.
SKU: ABB-G&T-#23127

50DHP350 Westinghouse Air Breaker 3000A 5KV EO/DO

Westinghouse 50DHP350 Air Breaker; 3000 amp, 5 KV, electrically operated, draw-out, motor volts: 230 AC, closing volts: 190-250 AC. Used sold electrically OK.
SKU: 50-DHP-350-EO-DO-#22756

50DHP350 Westinghouse Air Breaker 3000A 5KV EO/DO

Westinghouse 50DHP350 Air Breaker; 3000 amp, 5 KV, electrically operated, draw-out, closing volts: 190-250 AC. Used sold electrically OK.
SKU: 50-DHP-350-EO-DO-#21955

AK-1-75-3 GE 3000A 600V EO/DO Air Breaker LSIG

General Electric AK-1-75-3 Air circuit breaker; 3000 amp frame. 600 volt. Electrically operated, 120 volt AC, draw-out, CH Digi-Trip RMS, L.S.I.G. functions. Sold used electrically OK.
SKU: AK-1-75-3 EMSCO #22657

AK-1-75-3 GE 3000A Air Circuit Breaker EO/DO

General Electric AK-1-75-3 air circuit breaker; 3000 amp, 600 volt. Electrically-operated, draw-out, 250 volt control. Used E-OK.
SKU: AK-1-75-3 #21827

AK-1-75-2 GE 3000A Air Circuit Breaker EO/DO

General Electric AK-1-75-2 low voltage power circuit breaker; 3000 amp, 600 volt. Electrically-operated, draw-out, used E-OK.
SKU: AK-1-75-2 #21823

AK-1-75-1 GE 3000A 600V EO/DO Air Breaker LSIG

General Electric AK-1-75-3 Air Circuit Breaker; 3000 amp frame, 600 volt. Electrically operated, 120 volt AC, draw-out, CH Digi-Trip RMS, L.S.I.G. functions. Sold used electrically OK.
SKU: AK-1-75-1 EMSCO #22658

AK-1-75-1 GE 3000A Air Circuit Breaker EO/DO LSIG

General Electric AK-1-75-1 air circuit breaker; 3000 amp, 600 volt. Electrically-operated, draw-out,Digitrip RMS: L-S-I-G. Used E-OK.
SKU: AK-1-75-1 #21803

AK-1-75-1 GE 3000A Air Breaker EO/DO LSIG

General Electric AK-1-75-1 air circuit breaker; 3000 amp, 600 volt. Electrically operated, draw-out, Digitrip RMS: L-S-I-G. Used E-OK.
SKU: AK-1-75-1 EMSCO#21802

AK-2-75 GE 3000A Frame/3000A Rated EO/DO Air Breaker LIG

General Electric AK-2-75 Air Circuit Breaker; 3000 amp frame, 3000 amp rated, 600 volt. Retrofitted with Amptector I-A model LIG with LIG functions, electrically operated, 115 volt AC, closing voltage, draw-out. Used electrically Okay.
SKU: AK-2-75 #21169

AK-2-75 GE 3000A Frame/3000A Rated EO/DO Air Breaker LIG

General Electric AK-2-75 Air Circuit Breaker; 3000 amp frame, 3000 amp rated, 600 volt. Retrofitted with Amptector, I-A model LIG with LIG functions, electrically operated, 115 volt AC, closing voltage, draw-out. Used electrically Okay.
SKU: AK-2-75 #21170

AK-2-75-1 GE 3000A EO/DO Air Breaker

General Electric AK-2-75-1 low voltage power circuit breaker; 3000 amp, 600 volt. Electrically-operated, draw-out, Siemens-Allis LTI trip: L-I. Used E-OK.
SKU: AK-2-75-1 #21804

AK-2-75-1 GE 3000A Frame/2000A Rated EO/FM

General Electric AK-2-75-1 Air Circuit Breaker; 3000 amp frame, 2000 amp rated, 600 volt. EC1-B trip unit, electrically operated, 230 volt AC closing voltage, fixed-mount. Used electrically OK.
SKU: AK-2-75-1 #21809

AK-2-75-3 GE 3000A EO/DO Air Breaker

General Electric AK-2-75-3 low voltage power circuit breaker; 3000 amp, 600 volt. Electrically-operated, 120 volt Ac control, draw-out, EC-1, 3000 amp rated. Used E-OK.
SKU: AK-2-75-3 #22263

AK-2A-75 GE 3000A Frame/3000A Rated EO/DO Air Breaker****PARTS BREAKER****

General Electric AK-2A-75 Low Voltage Power Circuit Breaker; 3000 amp frame, 3000 amp rated, 600 volt. Static trip III RMS-TSIG-TZ **Bad trip unit with LSIG functions, electrically operated, 115 volt AC, closing voltage, draw-out. Used as is **PARTS BREAKER SEE PICTURES**.
SKU: AK-2A-75 #21171

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.