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Square D FA14050A Molded Case Circuit Breaker
- 50A
- 1 Pole
- I-Line
Square D
FA14050A
Molded Case Circuit Breaker
Brand
Square D
SKU
FA14050A
Quantity
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Square D FA14050A - 50A 1 Pole Molded Case Circuit Breaker
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Description
A proven solution for commercial facilities, the Square D FA14050A delivers 50A of thermal-magnetic protection. It features a Visi-Trip window to easily identify tripped circuits in busy electrical rooms. This model installs into Square D I-Line panelboards via Phase A jaws. Facilities looking to modernize can replace this legacy component with the PowerPacT BDA140501. The breaker is rated 18 kAIC at 277VAC and 25 kAIC at 120VAC, providing fixed LI protection and HACR certification.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA14050A |
| Series | FA |
| Amperage | 50A |
| 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 | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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, Padlock Attachment |
|---|---|
| Accessories | Phase A Jaws |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
5 answersWhat type of panelboard is required for the FA14050A circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It cannot be installed in standard load centers or NQ/NF panelboards.
What does the 'A' at the end of the FA14050A catalog number signify?
In the Square D I-Line naming convention, the 'A' suffix indicates that this single-pole breaker is factory-configured to connect specifically to Phase A on the panelboard bus.
Is the FA14050A still in active production?
No, the legacy F-frame series is obsolete. Schneider Electric has replaced it with the modern PowerPact B-frame series. The direct cross-reference for this specific 50A, Phase A breaker is catalog number BDA140501.
How is the FA14050A installed in the panel?
It features an I-Line style plug-in connection. The line side of the breaker snaps directly onto the panelboard busbar using a jaw-like connector, while the load side uses a traditional mechanical lug for the outgoing wire.
Can the FA14050A I-Line breaker be reverse fed?
No. Because this breaker features a plug-on jaw connection specifically designed for the line-side busbar and a mechanical lug for the load side, it cannot be reverse fed.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 70 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
70 reviews
- 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.
- EBEdward B.Verified BuyerReviewingSquare D FA32100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/1/26As good as new
The Square D FA32100 circuit breaker (refurbished) was as good as a new breaker, without exception. There was no wear and tear or any marks at all. It was basically new. It is an excellent choice and a great product without having to pay the cost of a new breaker.