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Square D FA24040BC Molded Case Circuit Breaker
- 40A
- 2 Pole
- I-Line
Square D
FA24040BC
Molded Case Circuit Breaker
Brand
Square D
SKU
FA24040BC
Quantity
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Square D FA24040BC - 40A 2 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D FA24040BC - 40A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA24040BC |
| Series | FA |
| Amperage | 40A |
| 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 |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 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 BC 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, Non-Interchangeable Trip, Phase Connection BC |
Quantity
Square D FA24040BC - 40A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA24040BC-R |
| Series | FA |
| Amperage | 40A |
| 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 |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 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 BC 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, Non-Interchangeable Trip, Phase Connection BC |
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Description
Designed for heavy-duty industrial power distribution, this 40-amp F-frame MCCB provides essential long-time and instantaneous (LI) overcurrent protection. The unit mounts into Square D I-Line panelboards using a specific BC phase connection to balance electrical loads across the bus. Rated for 18kAIC at 480VAC, it includes the signature Visi-Trip indicator for rapid fault identification. For modern retrofits, this legacy component crosses over to the PowerPact HDA260404.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA24040BC |
| Series | FA |
| Amperage | 40A |
| 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 |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 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 BC 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, Non-Interchangeable Trip, Phase Connection BC |
Product FAQs
7 answersWhat does the BC suffix indicate on the FA24040BC catalog number?
The BC suffix specifies that this 2-pole breaker is configured with a factory B and C phase connection for proper load balancing when mounted in Square D I-Line panelboards.
What is the modern PowerPact replacement for the legacy FA24040BC?
For modern retrofits, this legacy F-frame breaker crosses over to the Square D PowerPact HDA260404 circuit breaker.
What wire sizes are accepted by the terminals on the FA24040BC?
The factory lugs accommodate 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire.
How does this breaker indicate a fault condition?
The FA24040BC includes the Square D Visi-Trip visual indicator, which provides immediate identification of a tripped breaker within the panelboard.
Is the FA24040BC rated for direct current applications?
Yes, this thermal magnetic breaker is rated for 250VDC systems and provides a 10kA interrupting capacity at that voltage.
Can this breaker be installed in standard QO or Homeline load centers?
No, the FA24040BC features an I-Line plug-in connection and is exclusively compatible with Square D I-Line panelboards and switchboards.
Are the trip settings adjustable on this 40A breaker?
No, the FA24040BC features a thermal magnetic trip unit with fixed long-time and fixed instantaneous trip functions.
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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.