Air Circuit Breaker · 800A · 2500A Frame, 4-Pole, Fixed Horizontal Connection, 85kA at 480VAC · Noark Electrical A25R4FH800
What this product is for
The Noark Electrical A25R4FH800 is a low-voltage air circuit breaker for commercial and industrial power distribution where a high interrupting rating, 4-pole protection, and an 800A continuous current rating are required. It is used in switchgear, main distribution sections, generator distribution, and OEM assemblies built around a 2500A A25 frame.
Use for
Use for 480VAC distribution systems requiring an 800A breaker with 85kA interrupting capacity, fixed mounting, and horizontal connection pads. Common applications include service entrance and main distribution equipment, large tenant services, industrial feeders, and engineered power systems where 4-pole switching is specified.
Avoid for
Avoid for branch circuits, small panelboards, or installations that require a drawout breaker rather than a fixed-mounted unit. Also avoid where the specified fault current, pole configuration, mounting style, or connection orientation does not match the switchgear design.
Best for
Best for electricians, switchgear builders, and maintenance teams sourcing a UL 1066 air circuit breaker with a 2500A frame platform and 800A rating. This model suits projects that need 4-pole isolation and a fixed breaker with rear horizontal terminations.
Installed in
Typically installed in low-voltage switchgear lineups, power distribution rooms, industrial plants, commercial buildings, institutional facilities, and OEM power assemblies. Final fit depends on the equipment design, bus arrangement, and breaker mounting provisions.
Why this product exists
This breaker provides high-fault protection in larger distribution systems while allowing an 800A application on a 2500A frame family. That can help standardize equipment platforms across a project or lineup where multiple breaker ratings are used.
Compared with similar products
Compared with smaller MCCBs, an air circuit breaker is typically selected for larger switchgear applications, higher service levels, and maintainability within engineered distribution equipment. Compared with a drawout ACB, this fixed version is chosen where the gear is designed for permanent mounting rather than withdrawable service access.
Typical buying guidance: confirm the available fault current at the installation point is within the breaker rating, and verify that the switchgear is built for fixed horizontal rear connections. Actual suitability depends on the complete assembly, protection settings, and local electrical code.
Specifications
- Manufacturer part number: A25R4FH800
- Brand: Noark Electrical
- Product family: A25 series power circuit breaker
- Product type: Air circuit breaker (ACB)
- Rated current: 800A
- Frame size: 2500A
- Poles: 4-pole
- Mounting type: Fixed
- Connection orientation: Horizontal rear connection
- Interrupting capacity: 85kA at 480VAC
- Standards: UL 1066, CSA approved
- Application: Commercial and industrial power distribution
- 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
- Amps800 Amp
- Voltage800Vac (50/60Hz)
- Physical
- MountingFixed Horizontal
- Breaker TypeAir Circuit Breaker
Minimum Order $20
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Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
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
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
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
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.