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Square D FA26025AB Molded Case Circuit Breaker
- 25A
- 2 Pole
- I-Line
Square D
FA26025AB
Molded Case Circuit Breaker
Brand
Square D
SKU
FA26025AB
Quantity
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Square D FA26025AB - 25A 2 Pole Molded Case Circuit Breaker
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Description
Part of the legacy F-Frame series, the Square D FA26025AB is a 2-pole, 25A molded case circuit breaker delivering dependable thermal-magnetic protection for commercial applications. This breaker mounts into Square D I-Line panelboards using a factory-configured AB phase connection. For facilities upgrading their equipment, this model is replaced by the HDA260251. It features an 18kAIC rating at 480VAC, HACR certification, and a Visi-Trip indicator that simplifies troubleshooting.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA26025AB |
| 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Phase Connection AB |
| 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, Push-to-Trip |
Product FAQs
7 answersWhat is the modern replacement for the legacy Square D FA26025AB?
The FA26025AB is an obsolete F-Frame circuit breaker. For modern upgrades in I-Line panelboards, Schneider Electric replaced this line with the PowerPact H-Frame series. The direct crossover is the HDA260251, which maintains the 25A rating, 2-pole configuration, and AB phase connection.
What does the AB suffix indicate on this circuit breaker?
The AB suffix specifies the factory-configured phase connection for the I-Line busbar. It means the breaker jaws are aligned to draw power exclusively from the A and B phases of the panelboard.
How does the FA26025AB mount into the panelboard?
This breaker features an I-Line style plug-in connection. The line side snaps directly onto the I-Line busbar stack, and the breaker is secured to the panel backpan with a mounting bracket and screw. The load side uses standard mechanical lugs for wire termination.
Can the trip settings be adjusted on the FA26025AB?
No. This breaker uses a standard thermal-magnetic trip unit with fixed long-time (thermal) and fixed instantaneous (magnetic) trip functions. It does not have adjustable dials for customizing the trip curve.
Which panelboards are compatible with the FA26025AB?
This breaker is exclusively designed for use in Square D I-Line power distribution panelboards and switchboards. It cannot be installed in standard NQ, NF, or QO load centers.
What size wire can be terminated on the load lugs of the FA26025AB?
The factory-installed load lugs accept copper or aluminum conductors ranging from 14 AWG to 4 AWG. Always verify the correct torque specifications printed on the breaker label before finalizing terminations.
Is the FA26025AB rated for direct current applications?
Yes, in addition to its AC ratings, this breaker is rated for up to 250VDC with a 10kA interrupting capacity, making it suitable for specific industrial DC control circuits.
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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.