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Square D FA26025AC Molded Case Circuit Breaker
- 25A
- 2 Pole
- I-Line
Square D
FA26025AC
Molded Case Circuit Breaker
Brand
Square D
SKU
FA26025AC
Quantity
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Square D FA26025AC - 25A 2 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial power distribution, the Square D FA26025AC is a 2-pole, 25-amp molded case circuit breaker. It belongs to the legacy F-Frame family and provides reliable thermal-magnetic protection with long-time and instantaneous (LI) trip functions. This breaker features a plug-on I-Line mounting style with an AC phase connection, designed specifically to fit into Square D I-Line panelboards. For modern upgrades, it is replaced by the HDA260252 model.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA26025AC |
| Series | FA |
| Amperage | 25A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Phase Connection AC |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
6 answersWhat does the "AC" suffix mean in the FA26025AC catalog number?
The "AC" suffix indicates the phase connection for the I-Line bus. This 2-pole breaker is factory-configured with plug-on jaws that connect specifically to the A and C phases in a Square D I-Line panelboard.
How does the FA26025AC differ from the FA26025AB or FA26025BC?
While all three are 25-amp, 2-pole FA frame breakers, they connect to different phases on the panelboard bus. The FA26025AC connects to phases A and C, whereas the AB and BC variants connect to phases A and B, and B and C, respectively. You must select the correct phase configuration for your panel layout.
Can the trip settings on the FA26025AC be adjusted in the field?
No, the thermal-magnetic trip unit on this breaker has fixed long-time and instantaneous (LI) trip functions. The trip settings are factory-calibrated and cannot be adjusted in the field.
Is the FA26025AC suitable for high fault current applications?
The FA series is a standard-interrupting breaker, rated for 18kA at 480VAC and 14kA at 600VAC. If your power system requires a higher interrupting capacity, you will need to upgrade to an FH frame breaker, which shares the same physical footprint but offers higher AIC ratings.
Do I need to purchase separate lugs for the FA26025AC?
No, this breaker includes factory-installed mechanical lugs on the load side that accept 14 to 4 AWG copper or aluminum wire. The line side utilizes an I-Line plug-on connection, so no line-side lugs are required.
How does the FA26025AC mount into the panelboard?
It utilizes a plug-on I-Line connection that grips the panelboard bus tightly during short circuits. This design allows for quick installation in Square D I-Line panelboards without the need for bolted line-side connections.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 71 reviews.
Reviews Summary
Generated by AI from 68 most recent customer reviews
Last updated 8/15/26
Customers say this circuit breaker matches its description, fits perfectly, and works as expected. Many reviews highlight fast shipping and quick delivery times, with several noting orders arrived within days. Users appreciate the product condition, describing refurbished units as appearing new without wear or marks. Common feedback addresses competitive pricing compared to local suppliers and the overall value proposition. Customers report straightforward ordering processes and reliable service, with repeat purchasers noting consistent positive experiences. The breaker installed easily and functioned properly in various applications.
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Rating
71 reviews
- RLRichard L.Verified BuyerReviewingSquare D FA34090 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/30/26Mill Superintendant
Works great!
We will definitely use SuperBreakers again.
Thank you!
Richard
- CPCasey P.Verified BuyerReviewingSquare D FA34030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/14/26Great company
Ordered on a Saturday evening, paid for two day shipping and it arrived on time and in perfect condition. Would 100 percent be using this company going forward, beat out pricing and shipping times for all my local supply houses. Plus the staff were great to deal with.
- AHAnn H.Verified BuyerReviewingSquare D FA36100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/22/26Professional Service
So far, so good! The circuit breaker was installed along with a new compressor for our church AC, and everything is now working well.
The company has been professional, dependable, and reputable throughout the process. I had a question after the installation, and it was answered immediately. I also appreciated that they followed up and asked for feedback to make sure the new part was working properly and that we were satisfied with the service.
It’s refreshing to deal with a company that not only has quality products but also cares about its customers after the job is completed. I would definitely recommend them!
- RErene e.Verified BuyerReviewingSquare D FA34070 - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/14/26breaker
breaker was just as discribed
- BEBallentine E.Verified BuyerReviewingSquare D FA24060AC - 60A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/15/26Great
Accurate and on time.