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.

AKU-3-25 GE Air Breaker 600A EO/DO Fused LI

General Electric AKU-3-25 low voltage power circuit breaker; 600 amp, 600 volt. Electrically operated, draw-out, power sensor trip unit 'LI" functions, control device: 24 volt DC, closing solenoid: 460 volt. Used electrically OK.
SKU: AKU-3-25 EMSCO #22167

AKU-5-25-E GE Air Breaker 600A 600V EO/DO Fused LI

General Electric AKU-5-25-E low voltage power circuit breaker; 600 amp, 600 volt. Electrically operated, draw-out, SST solid state trip device "LI" functions. Used electrically OK.
SKU: AKU-5-25-E #21845

DS-206 Westinghouse Air Breaker 600V 800A EO/DO LI

Westinghouse DS-406 low voltage AC power circuit breaker; 600 volt, 800 amp. Electrically operated, draw-out, 125 DC shunt trip, Amptector II A Model DU with LI function. Used electrically OK.
SKU: DS-206-EO-DO-LI-#23039

DS-420 Westinghouse 2000A 600V Air Circuit Breaker EO/DO LI

Westinghouse DS-420 low voltage AC power circuit breaker; type DS, 2000 amp frame, 635 volt max. Electrically operated, draw-out, 120 volt AC trip, 120 volt AC close, Ampector I with LI functions, 2000 amp CT. Sold used as-is.
SKU: DS420 EMSCO# 20271

DS-420 WESTINGHOUSE 2000A 635V Air Circuit Breaker EO/DO LI

Westinghouse DS-420 low voltage AC power circuit breaker; type DS, 2000 amp frame, 635 volt max. Electrically operated, draw-out, 120 volt AC trip, 120 volt AC close, Ampector I with LI functions, 2000 amp CT. Sold used as-is.
SKU: DS420 EMSCO# 20276

DS-420 Westinghouse 2000A 600V Air Circuit Breaker EO/DO LI

Westinghouse DS-420 low voltage AC power circuit breaker; type DS, 2000 amp frame, 2000 amp sensors, 600 volt max. Electrically operated, draw-out, 120 volt AC shunt trip, 120 volt AC close circuit, Amptector I-A Model with LI functions. Sold used electrically OK.
SKU: DS420 EMSCO# 20616

DS420 WESTINGHOUSE 2000A/2000A EO/DO LI AIR BREAKER SURPLUS IN BOX

Westinghouse DS-420 low voltage AC power circuit breaker; 2000 amp frame, 2000 amp rating plug & sensors, draw-out, electrically operated, shunt trip: 120 VAC, spring release: 120 VAC, motor circuit: 120 VAC, Ampector 1-A model with LI functions. Surplus in box.
SKU: DS420 EMSCO #20851

DSL-206 Westinghouse 800A Frame/600A Current Sensors 600V Fused EO/DO Air Breaker LI

Westinghouse DSL-206 Low Voltage AC Integrally Fused Power Circuit Breaker; 800 amp frame, 600 volt sensors, 600 volt. Electrically operated, draw-out, 120 volt AC, close circuit, 120 volt AC shunt trip, Amptector I-A Model with LI functions, 1200 amp fuses. Used electrically OK.
SKU: DSL206 #20589

FP-50 FPE 1600A FRAME/1000A RATED CONTIN. CURRENT EO/ST AIR BREAKER LI

Federal Pacific FP-50 low voltage power circuit breaker; 1600 amp frame, 1000 amp rated, Contin. current. Electrically operated, close voltage:115 AC, trip voltage: 115 AC, charge motor: 115 AC, stationary, in cell with LI functions on trip unit. Used electrically OK.
SKU: FP50 EMSCO #20463

FP-75 FPE 3000A Frame/1600A Rated 600V EO/Stationary Air Breaker LI

Federal Pacific FP-75 low voltage power circuit breaker; 3000 amp frame, 1600 amp rated, 600 volt. Electrically operated, Stationary, 115 VAC close voltage, 115 VAC trip voltage, 115 VAC charge motor, TD1 series trip device with LI functions. Used electrically OK.
SKU: FP75 EMSCO #20437

FP-75 FPE 3000A/3000A RATED EO/DO Air Breaker LI

Federal Pacific FP-75 low voltage power circuit breaker; 3000 amp frame, 3000 amp rated Contin. current. Electrically operated, draw-out, close voltage: 115 AC trip voltage: 115 AC, charge motor: 115 AC with LI functions on trip unit. Used electrically OK.
SKU: FP75 EMSCO #20465

K-1600 ITE 1600A 600V EO/STATIONARY Air Breaker LI

ITE K-1600 Power Circuit Breaker; 1600 amp frame, red insulators, OD-3 trip units with L.I. functions, 1600 amp rated. Electrically operated, stationary, 120 VAC, date: 03/74. Sold used electrically OK.
SKU: K1600 EMSCO#20279

K-1600 ITE 1600A 600V EO/STATIONARY Air Breaker LI

ITE K-1600 Power Circuit Breaker; 1600 amp frame, red insulators. OD-3 trip units with L.I. functions, 1600 amp rated. Electrically operated, stationary, 120 VAC, date: 03/73. Sold used electrically OK.
SKU: K1600 EMSCO#20281

K-1600 ITE 1600A 600V EO/STATIONARY Air Breaker LI

ITE K-1600 Power Circuit Breaker; 1600 amp frame. Red insulators, OD-3 trip units with L.I. functions, 1600 amp rated, Electrically operated, stationary, 120 VAC, type date: 07/73. Sold used electrically OK.
SKU: K1600 EMSCO#20282

K-1600 ITE Air Circuit Breaker 1600A 600V EO/ST LI

ITE K-1600 Air Circuit Breaker; 1600 amp, 600 volt. Red insulators, OD-3 trip with L-I functions. Electrically operated, stationary, 120 volt. Used electrically OK.
SKU: K1600 EMSCO#20287

K-1600 ITE Air Circuit Breaker 1600A 600V EO/ST LI

ITE K-1600 Air Circuit Breaker; 1600 amp, 600 volt. Red Insulators, OD-3 trip with L-I functions. Electrically operated, stationary, 120 volt. Used electrically OK.
SKU: K-1600 EMSCO#20290

K-1600 ITE 1600A 600V EO/ST Air Breaker LI

ITE K-1600 Power Circuit Breaker; 1600 amp. Electrically operated, stationary, OD-3 trip with LI functions. Used electrically OK.
SKU: K-1600 EMSCO#20374

K-1600 ITE 1600A 600V EO/ST Air Breaker LI

ITE K-1600 Power Circuit Breaker; 1600 amp. Red insulators, OD-3 trip with L-I functions, Electrically operated, stationary. Used Electrically OK.
SKU: K-1600 EMSCO#20375

K-1600 ITE 1600A 600V Air Circuit Breaker EO/FM LI

ITE K-1600S Power Circuit Breaker; 1600 amp frame, 1600 amp rated. Electrically operated, fixed mount, 115 volt DC control, red insulators OD 3 trip unit with LI functions. Used Electrically OK.
SKU: K1600 #21548

K-1600 ITE 1600A 600V Air Circuit Breaker Red MO/DO LSI

ITE K-1600 Power Circuit Breaker; 1600 amp frame, 50/60 Hz, AC 1600 amp sensors, 3 Pos. Manually operated, draw-out, Westinghouse trip with LSI functions, red insulators. Used Electrically OK.
SKU: K1600 EMSCO# 21502

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.