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Square D FA14090A Molded Case Circuit Breaker
- 90A
- 1 Pole
- I-Line
Square D
FA14090A
Molded Case Circuit Breaker
Brand
Square D
SKU
FA14090A
Quantity
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Square D FA14090A - 90A 1 Pole Molded Case Circuit Breaker
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Description
Operating at 90A, the Square D FA14090A is a 1-pole molded case circuit breaker from the F-Frame series. It provides long-time and instantaneous (LI) thermal-magnetic protection. Configured with Phase A jaws, it installs securely into Square D I-Line panelboards. For modern upgrades, it is replaced by the PowerPacT B-Frame BDA140901. Rated 18 kAIC at 277VAC, it safely clears electrical faults. The breaker also includes a Visi-Trip indicator for fast troubleshooting.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA14090A |
| Series | FA |
| Amperage | 90A |
| 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
9 answersWhat panelboards are compatible with the FA14090A circuit breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection that mounts directly to the bus assembly.
What does the "A" suffix in the FA14090A catalog number indicate?
In Square D I-Line single-pole breakers, the suffix indicates the specific phase connection. The "A" in FA14090A means this breaker is physically configured to connect only to the A-phase of the panelboard bus.
Can I install this single-pole breaker on the B or C phase of my I-Line panel?
No, the FA14090A is built to connect exclusively to the A-phase of the bus stack. To connect to the B or C phase, you must source a breaker with the corresponding suffix, such as the FA14090B or FA14090C.
What wire sizes are accepted by the lugs on the FA14090A?
The factory-installed mechanical lugs accept 14 AWG to 1/0 AWG copper conductors, or 12 AWG to 1/0 AWG aluminum conductors.
Does the FA14090A require a separate mounting bracket for installation?
No, I-Line breakers feature a built-in mounting bracket. The breaker utilizes a blow-on plug-on phase connection that grips the bus bar, and a retaining screw that secures the bracket directly to the panelboard backpan.
Is joint compound required when installing the FA14090A onto the I-Line bus?
Yes, I-Line circuit breakers are supplied with factory-applied joint compound on the plug-on connectors. This compound should not be removed. If the breaker is removed and reinstalled, fresh joint compound must be reapplied to the jaws to ensure a proper connection.
Can the FA14090A be used in direct current (DC) applications?
Yes, this breaker is rated for DC applications and provides an interrupting capacity of 10kA at 125VDC, making it suitable for specific control circuits or battery systems.
Are the trip settings on the FA14090A adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time (thermal) overload protection and instantaneous (magnetic) short-circuit protection are factory-calibrated and cannot be adjusted in the field.
Is the Square D FA frame still in active production?
The FA frame is a legacy F-frame series. While still widely supported and available for existing I-Line panels, Schneider Electric's modern replacement for F-frame I-Line breakers is the PowerPact B-frame series.
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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.