Air Circuit Breakers

Note: Our website may not reflect our full in-stock inventory. If you don’t see what you need, call 1-800-328-1842 for a real-time inventory check and options. “Contact us for price” simply means we’ll quote it to confirm configuration and current pricing - not that it’s out of stock.

WLF2A320 Siemens 2000 Amp Frame 600 Volt Fused Power CB M/O D/O in Cell

Siemens low voltage AC integrally fused WLF2A320 power circuit breaker; 2000 amp frame, 600 volt, 2000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O), open fuse lock-out WLOFLO, 3000 amp fuses - (A4BY3000-SEA-3) in-cell - WLFG2320, used tested with report.
SKU: AB201421217

WLF2A320 Siemens 2000A Frame 600V Fused Power Circuit Breaker M/O D/O

Siemens low voltage AC integrally fused WLF2A320 power circuit breaker: 2000 amp frame, 600 volt, 2000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O), open fuse lock-out, WLOFLO 3000 amp fuses - (A4BY3000-SEA-3) in cell - WLFG2320, used tested with report.
SKU: AB201420524

WLF2A320 Siemens 2000A Frame 2000A Rated 600V Fused Power Circuit Breaker M/O D/O

Siemens low voltage AC integrally fused WLF2A320 power circuit breaker: 2000 amp frame, 600 volt, 2000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O), open fuse lock-out, WLOFLO 3000 amp fuses - (A4BY3000-SEA-3) in cell - WLFG2320, used tested with report.
SKU: AB201420525

WLF2A320 Siemens 2000A Frame 2000A Rated 600V Fused Power Circuit Breaker M/O D/O

Siemens low voltage AC integrally fused WLF2A320 power circuit breaker: 2000 amp frame, 600 volt, 2000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O), open fuse lock-out, WLOFLO 3000 amp fuses - (A4BY3000-SEA-3) in-cell - WLFG2320, used tested with report.
SKU: AB201421215

WLF2A320 Siemens 2000A Frame 2000A Rated 600V Fused Power Circuit Breaker M/O D/O

Siemens low voltage AC integrally fused WLF2A320 power circuit breaker; 2000 amp frame, 600 volt, 2000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O), open fuse, lock-out, WLOFLO 3000 amp fuses - (A4BY3000-SEA-3) in-cell - WLFG2320, used tested with report.
SKU: AB201421216

WLF2A320 Siemens 2000A Frame 2000A Rated 600V Fused Power Circuit Breaker M/O D/O

Siemens low voltage AC integrally fused WLF2A320 power circuit breaker: 2000 amp frame, 600 volt, 2000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O), open fuse, lock-out WLOFLO, 3000 amp fuses - (A4BY3000-SEA-3) in cell - WLFG2320, used tested with report.
SKU: AB201420523

WLF3A340 Siemens 4000A Frame 4000A Rated 600V Power Circuit Breaker M/O D/O

Siemens low voltage AC integrally fused WLF3A340 power circuit breaker: 4000 amp frame, 600 volt, 4000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O) in cell - WLFG2340, used tested with report.
SKU: AB201421211

WLF3A340 Siemens 4000A Frame 4000A Rated 600V Power Circuit Breaker M/O D/O

Siemens low voltage AC Integrally fused WLF3A340 power circuit breaker; 4000 amp frame, 600 volt, 4000 amp rating plug. Integrated cubicle bus trip unit ETU745, LSIG functions, manually operated (M/O), draw out (D/O) In cell - WLFG2340, used tested with report.
SKU: AB201421212

WLFCAR50 Siemens Fuse Truck for WLF3A3xx or WLF353xx 5000A Frame Size 600V

Siemens WLFCAR50 low voltage AC fuse draw-out: 5000 amp frame, size 600 volt for use with WLF3A3xx circuit breaker or WLF353xx non-autom. Switch fuse replacement kit: WLCLFUSE2003 draw out 6000 amp fuses - (A4BY6000-SEA-1) in cell - WLGF3340 (FB), used tested with report.
SKU: AB201420527

WLL2D320 Siemens 2000A Frame 2000A Rated 600V Power Circuit Breaker M/O D/O

Siemens WLL2D320 power circuit breaker: 2000 amp frame, 600 volt, 2000 amp rating plug, ETU725 trip unit, LSI functions, manually operated (M/O), draw out (D/O), used tested with report.
SKU: AB201522330

WLL2D320 Siemens 2000A Frame 2000A Rated 600V Power Circuit Breaker M/O D/O

Siemens WLL2D320 power circuit breaker: 2000 amp frame, 600 volt, 2000 amp rating plug, ETU725 trip unit, LSI functions, manually operated (M/O), draw out (D/O), used tested with report.
SKU: AB201522331

WPS-16 GE WavePro 1600A 600V MVT+ LSI Air Circuit Breaker MO/DO

General Electric Type WPS-16 WavePro low voltage power circuit breaker; cat# WS1GAPMXXXABXXX, 1600 amp frame, 635 volt max, 1600 amp rating plug: TR16B1600, Micro Versa trip Plus trip unit (#K116LSI), LSI functions, manually operated, draw-out. Sold used electrically OK.
SKU: WPS-16 #20737

WPS-40 GE WavePro 4000A 600V MVT+ LSIG Air Circuit Breaker MO/DO

General Electric Type WPS-40 WavePro low-voltage power circuit breaker; cat# WE1NAQVXXXAXXXX, 4000 amp frame, 635 volt max, 4000 amp, rating plug: TR40B4000, Micro Versa trip plus trip unit with LSG (K440LSIG). Manually operated, draw-out, sold used as-is.
SKU: WPS-40 #19958

WPS-40 GE WavePro 4000A 600V MVT+ LSIG Air Circuit Breaker MO/DO

General Electric Type WPS-40 WavePro low-voltage power circuit breaker; cat# WE1NAQVXXXAXXXX, 4000 amp frame, 635 volt max, 4000 amp rating plug: TR40B4000 Micro Versa trip plus trip unit with LSG (K440LSIG). Manually operated, draw-out, sold used as-is.
SKU: WPS-40 #19959

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.