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.

DB-25 W-HSE 600A 3P 480V MO/DO Air Circuit Breaker Used LIG

Westinghouse DB-25 air circuit breaker; 600 amp, 3 pole, 480 volt with L-I-G functions. Manually operated, draw-out, 600 amp C.T.'s. Sold used as-is.
SKU: DB-25 - EMSCO # 19628

DB-25 W-HSE 600A 3P 480V MO/DO Air Breaker LIG

Westinghouse DB-25 air circuit breaker; 600 amp, 3 pole, 480 volt. Manually operated, draw-out with L-I-G functions, 600 amp C.T.'s. Sold used as-is.
SKU: DB-25 - EMSCO # 19630

DB-25 W-HSE 600A 3P 480V MO/DO Air Circuit Breaker LIG

Westinghouse DB-25 Air Circuit Breaker; 600 amp, 3 pole, 480 volt. Manually operated, draw-out with L-I-G functions. Sold used as-is.
SKU: DB-25 - EMSCO # 19629

DB-50 W-HSE 1600A 3P 480V MO/DO Air Breaker LIG

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 3 pole, 480 volt. Manually operated, draw-out, L-I-G functions, 1600 amp C.T.'s. Sold used as-is.
SKU: DB-50 - EMSCO # 19625

DB-50 W-HSE 1600A 3P 480V MO/DO AIR CIRCUIT BREAKER LSIG

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, Ampector I-A with LSIG functions. Sold used as-is.
SKU: DB-50-EMSCO #19658

DB-50 W-HSE 1600A 3P 480V MO/DO AIR CIRCUIT BREAKER LSIG

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, Ampector I-A with LSIG functions. Sold used as-is.
SKU: DB-50-EMSCO #19659

DB-50 W-HSE 1600A 3P 480V MO/DO AIR CIRCUIT BREAKER LSI

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, Ampector I with LSI. Sold used as-is.
SKU: DB-50-EMSCO #19660

DB-50 W-HSE 1600A 3P 480V MO/DO AIR CIRCUIT BREAKER

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, retrofitted for newer style trip unit** Does not include a trip unit. Sold used as-is.
SKU: DB-50-EMSCO #19662

DB-50 W-HSE 1600A 480V MO/DO AIR CIRCUIT BREAKER

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, 3 position, no trip unit. Sold used as-is.
SKU: DB-50-EMSCO #19283

DB-50 W-HSE 1600A 480V MO/DO AIR BREAKER LSIG

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, trip unit: Amptector I with LSIG functions, 3 positions. Sold used as-is.
SKU: DB-50-EMSCO #19284

DB-50 W-HSE 1600A 480V MO/DO AIR CIRCUIT BREAKER LSG

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, trip unit: Digi-trip-RMS/R500 with LSG functions, 3 position. Sold used as-is.
SKU: DB-50-EMSCO #19285

DB-50 W-HSE 1600A 480V MO/DO AIR CIRCUIT BREAKER

Westinghouse DB-50 Air Circuit Breaker; 1600 amp 480 volt. Manually operated, draw-out. Sold used as-is.
SKU: DB-50-EMSCO #19957

DB-50 W-HSE 1600A 480V MO/ST AIR CIRCUIT BREAKER

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, stationary, single position. Sold used as-is.
SKU: DB-50-EMSCO #19282

DB-50 W-HSE 1600A 480V MO/DO AIR CIRCUIT BREAKER

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out. Sold used as-is.
SKU: DB-50-EMSCO #19956

DB-50 W-HSE 1600A 3P 480V MO/DO AIR CIRCUIT BREAKER

Westinghouse DB-50 Air Circuit Breaker; 1600 amp, 480 volt. Manually operated, draw-out, retrofitted for new style trip unit. Does not include a trip unit. Sold used as is.
SKU: DB-50-EMSCO #19661

K1600S Gould 1600A 480V MO/DO Circuit Breaker LIG

Gould K1600S Power Circuit Breaker; 1600 amp, 480 volt, 3 pole. Manually operated, draw-out with L-I-G functions. Sold used As-Is.
SKU: K1600S - EMSCO #19651

K2000S 2000A 480V ITE MO/DO Air Breaker LI

ITE K2000S Power Circuit Breaker; 2000 amp, 480 volt, 3 pole. Manually operated, draw-out, red insulator. BBC solid state trip with L.I. functions. Sold Used As-Is.
SKU: K2000S - EMSCO # 20360

K2000S ITE 2000A 480V 3P EO/DO Air Breaker LI

ITE K2000S Power Circuit Breaker; 2000 amp, 480 volt, 3 pole. Electrically operated, draw-out, 120 volt AC, motor red insulator, ITE power shield trip with L.I. functions, Date: 09/77. Sold Used As-Is.
SKU: K2000S - EMSCO # 20365

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.