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Square D FA14015B Molded Case Circuit Breaker
- 15A
- 1 Pole
- I-Line
Square D
FA14015B
Molded Case Circuit Breaker
Brand
Square D
SKU
FA14015B
Quantity
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Square D FA14015B - 15A 1 Pole Molded Case Circuit Breaker
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Description
Providing reliable thermal-magnetic protection, the Square D FA14015B operates as a 1-pole, 15A legacy molded case circuit breaker for 120/277VAC systems. Designed for Square D I-Line panelboards, this F-Frame breaker features a factory-configured Phase B plug-on connection. Facilities looking to modernize can substitute this unit with the BDA140153 model. It delivers an 18 kAIC rating at 277VAC with standard LI trip functions. The device is HACR rated and includes a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA14015B |
| Series | FA |
| Amperage | 15A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 120VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 120VAC, 18kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-4 AWG (Cu), 12-4 AWG (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 B Jaws (Factory Configured) |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489, W-C-375B/GEN |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Phase Connection B |
Product FAQs
5 answersCan I install the FA14015B in a standard Square D QO or NQ load center?
No. This breaker features an I-Line plug-on mounting style. It is exclusively compatible with Square D I-Line panelboards and switchboards, and will not fit standard residential or NQ commercial panels.
What does the B suffix indicate on the FA14015B catalog number?
The B suffix specifies the phase connection. It means this 1-pole breaker is factory-configured to connect specifically to the B phase of an I-Line bus.
Has the Square D FA frame series been discontinued?
Yes, the legacy F-frame molded case circuit breakers have been phased out by Schneider Electric. The modern replacement line for I-Line panelboards is the PowerPact B-frame series.
What is the modern PowerPact replacement for the FA14015B?
Facilities looking to upgrade can substitute this unit with the PowerPact BDA140153. It provides the same 15-amp capacity, 1-pole footprint, and B-phase I-Line connection.
Is the FA14015B suitable for heating, air conditioning, and refrigeration equipment?
Yes. This breaker is HACR rated, making it suitable for protecting dedicated HVAC and refrigeration circuits that require this specific certification.
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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.