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.

FP-25 Federal Pacific Air Breaker 600A 600V MO/DO LI

Federal Pacific FP-25 low voltage power circuit breaker; 600 amps, 600 volts. Manually operated, draw-out, TD-1 trip device with LI functions. Used electrically OK.
SKU: FP-25-MO-DO-LI-#22374

FP-25 Federal Pacific Air Breaker 600A 600V MO/DO LI

Federal Pacific FP-25 low voltage power circuit breaker; 600 amps, 600 volts. Manually operated, draw-out, TD-1 trip device with LI functions. Used electrically OK.
SKU: FP-25-MO-DO-LI-#22372

FP-25 Federal Pacific Air Breaker 600A 600V MO/DO LI

Federal Pacific FP-25 low voltage power circuit breaker; 600 amp, 600 volt. Manually operated, draw-out, TD-1 trip device with LI functions. Used electrically OK.
SKU: FP-25-MO-DO-LI-#22373

FP50 FPE 2000A 600V MO/ST w/ AC Pro Air Breaker

Federal Pacific FP-50 Low Voltage Power Circuit Breaker; 2000 amp frame, 600 volt. Manually operated, stationary "AC pro" trip unit. Used electrically OK.
SKU: FP50 EMSCO #20427

FP50 FPE 2000A 600V MO/ST Air Breaker LI

Federal Pacific FP-50 low voltage power circuit breaker; 2000 amp frame, 400-350-300-250 trip, 600 volt. Manually operated, stationary "LI" functions. Used electrically OK.
SKU: FP50 EMSCO #20426

FP50 FPE 2000A 600V MO/ST Air Breaker LI

Federal Pacific FP-50 low voltage power circuit breaker; 2000 amp frame, 225-200-175-150 trip, 600 volt. Manually operated, stationary "LI" functions. Used Electrically OK.
SKU: FP50 EMSCO #20423

FP50 FPE 2000A 600V MO/ST Air Breaker LI

Federal Pacific FP-50 low voltage power circuit breaker; 2000 amp frame, 400-350-300-250 trip, 600 volt. Manually operated, Stationary "LI" functions. Used Electrically OK.
SKU: FP50 EMSCO #20425

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-50 FPE 1600A FRAME/1200A RATED CONTIN. CURRENT MO/ST AIR BREAKER LI

Federal Pacific FP-50 low voltage power circuit breaker; 1600 amp frame, 1200 amp rated, contin. current. Manually operated, stationary with LI functions, on trip unit. Used electrically OK.
SKU: FP50 EMSCO #20428

FP-50 FPE 2000A 1000/2000A CT's Frame Rated 600V MO/ST w/ AC Pro Trip Unit Air Breaker

Federal Pacific FP-50 Low Voltage Power Circuit Breaker; 2000 amp frame, 1000/2000 amp CT's, 600 volt. Manually operated, stationary, AC pro trip unit. Used Electrically OK.
SKU: FP50 EMSCO #20442

FP-50 FPE 2000A Frame/ 250-400A Rated 600V MO/ST Air Breaker LI

Federal Pacific FP-50 Low Voltage Power Circuit Breaker; 2000 amp frame, 250-400 amp sensors, 600 volt. Manually operated, stationary with LI functions on trip unit. Used Electrically OK.
SKU: FP50 EMSCO #20443

FP-50 FPE 2000A Frame/ 500-800A Rated 600V MO/ST Air Breaker LI

Federal Pacific FP-50 Low Voltage Power Circuit Breaker; 2000 amp frame, 500-800 amp sensors, 600 volt. Manually operated, stationary with LI functions on trip unit. Used Electrically OK.
SKU: FP50 EMSCO #20444

FP-50 600V 1600A MO/ST Air Breaker

Federal Pacific FP-50 low voltage power circuit breaker; 600 volts, 1600 amps. Manually operated, stationary mount In cell, TD1 trip device, instantaneous function. Used electrically OK.
SKU: FP-50, Emsco#22688

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

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.