Air Circuit Breaker · 2000A, 2500A Frame, 4-Pole, Fixed Vertical Connection, 85kA at 480VAC · Noark Electrical A25R4FV2000
What this product is for
This air circuit breaker is used for low-voltage power distribution in commercial, institutional, industrial, and OEM switchgear assemblies. It is a 2000A breaker built on a 2500A A25 frame with 4 poles, fixed mounting, rear vertical connection, and an 85kA interrupting rating at 480VAC.
Use for
Use for main breakers, tie breakers, large feeders, generator distribution, and switchboard sections where a 4-pole air circuit breaker is required. It is suited to applications that need UL 1066 construction, high available fault current capacity, and a fixed-mounted breaker with vertical bus connection.
Avoid for
Avoid for small panelboards, branch circuits, or installations that require a drawout breaker, horizontal connection, or a different interrupting rating. Confirm frame, pole count, mounting style, connection orientation, and coordination requirements before ordering.
Best for
Best for electricians, switchgear builders, and maintenance teams replacing or specifying a fixed ACB in 480V distribution equipment. A 4-pole configuration is commonly selected where the neutral also needs switching or isolation, subject to engineering design and code requirements.
Installed in
Typically installed in low-voltage switchgear, switchboards, power distribution lineups, industrial plants, commercial buildings, infrastructure projects, and OEM assemblies. Final installation space, bus arrangement, and termination layout must match the breaker and gear design.
Why this product exists
This model provides high-current circuit protection and switching in applications above the range of typical moulded case breakers. The 2500A frame supports a 2000A rating in the A25 series, giving specifiers a standard platform for larger distribution systems and coordinated protection schemes.
Compared with similar products
Compared with drawout air circuit breakers, this fixed version is intended for permanent mounting rather than quick removal from a cassette. Compared with horizontal connection versions, this model uses rear vertical connection pads, which may better suit certain bus layouts. Compared with smaller frame breakers, it is intended for higher-capacity mains and feeders in larger assemblies.
Specifications
- Manufacturer: Noark Electrical
- Manufacturer part number: A25R4FV2000
- Product family: A25 Series power circuit breaker
- Product type: Air circuit breaker (ACB)
- Standards: UL 1066, CSA approved listing indicated by seller/manufacturer literature
- Rated current: 2000A
- Frame size: 2500A frame
- Poles: 4-pole
- Mounting type: Fixed
- Connection orientation: Rear vertical connection
- Interrupting capacity: 85kA at 480VAC
- Typical application voltage range shown in product literature for this rating family: 254 to 508VAC
- Application note: Commonly used in main and feeder protection for large low-voltage distribution systems. Actual performance depends on available fault current, protective settings, coordination study, installation conditions, and local electrical code.
- BrandNoark Electrical
- Warranty5 year
- Electrical
- Short circuit breaking rating85kA (254-508Vac)
- Compliant with standard(s)UL1066
UL1066 (low-voltage AC and DC power circuit breakers)
CSA C22.2 No.31
ANSI C37.13 (low-voltage power circuit breakers)
ANSI C37.16 (low-voltage power circuit breakers ratings; related requirements and applications)
ANSI C37.17 (IEEE standard for trip systems)
ANSI C37.50 (low-voltage AC power circuit breakers; test procedure) - DimensionsH368mm x W413mm x D306mm
H14.49" x W16.26" x D12.05" - Electrical durability(635Vac) 600 hours
(847Vac) 300 hours - Mechanical durability10000 hours
- Poles4 Pole
- Amps2000 Amp
- Voltage800Vac (50/60Hz)
- Physical
- MountingFixed Vertical
- Breaker TypeAir Circuit Breaker
Minimum Order $20
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Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998(Updated August 2026)
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.