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Square D FA24090AC Molded Case Circuit Breaker
- 90A
- 2 Pole
- I-Line
Square D
FA24090AC
Molded Case Circuit Breaker
Brand
Square D
SKU
FA24090AC
Quantity
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Square D FA24090AC - 90A 2 Pole Molded Case Circuit Breaker
New
Quantity
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Square D FA24090AC - 90A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA24090AC |
| Series | FA |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 |
|---|---|
| Accessories | Lugs (AL100FA) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip |
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Square D FA24090AC - 90A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA24090AC-R |
| Series | FA |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 |
|---|---|
| Accessories | Lugs (AL100FA) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip |
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Description
Built for industrial applications, the FA24090AC is a 90A thermal-magnetic breaker from Square D's legacy F-frame series. It delivers reliable protection for 480V systems. Utilizing an I-Line mounting configuration with an AC phase connection, it fits into Square D I-Line panelboards. For modern replacements, use the PowerPacT HDA260902. The breaker provides an 18 kAIC capacity at 480VAC. It features non-interchangeable trip functions and a highly visible Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA24090AC |
| Series | FA |
| Amperage | 90A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 |
|---|---|
| Accessories | Lugs (AL100FA) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip |
Product FAQs
8 answersWhat does the "AC" suffix indicate on the FA24090AC catalog number?
The "AC" suffix specifies the phase connection for the I-Line bus. This 2-pole breaker is factory-configured to connect to the A and C phases within a Square D I-Line panelboard or switchboard.
What is the modern replacement for the legacy FA24090AC?
The FA24090AC is an obsolete F-Frame breaker. Schneider Electric recommends the PowerPacT B-Frame BDA260902 as the direct replacement for new installations or upgrades in I-Line panelboards.
Can the trip settings be adjusted on the FA24090AC?
No, this breaker features a fixed thermal magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip functions are factory-set and cannot be modified in the field.
How does the FA24090AC mount into the electrical panel?
It features an I-Line style plug-in connection on the line side, allowing it to mount directly onto the bus assembly of compatible Square D I-Line panelboards. The load side utilizes standard mechanical lugs for wire termination.
Is the FA24090AC suitable for DC voltage applications?
Yes, alongside its AC ratings, this breaker is rated for 250VDC with a 10 kAIC interrupting capacity. This makes it viable for specific industrial DC control circuits and battery systems.
Can I install the FA24090AC in a standard QO or Homeline load center?
No, this F-Frame molded case circuit breaker is exclusively designed for industrial Square D I-Line panelboards and switchboards. It is not physically compatible with residential QO or Homeline enclosures.
What wire sizes are compatible with the load lugs on the FA24090AC?
The factory-installed load lugs accept 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire. Always torque the lug screws to the exact specifications printed on the breaker faceplate to ensure a secure connection.
What should I do if my system requires a higher interrupting rating than the FA24090AC provides?
The FA24090AC provides a standard 18 kAIC rating at 480VAC. If your fault current calculations require a higher interrupting capacity, you must upgrade to a high-interrupting FH-Frame or a modern PowerPacT equivalent rated for your specific system requirements.
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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.