Square D FA24045BC Molded Case Circuit Breaker
- 45A
- 2 Pole
- I-Line
Square D
FA24045BC
Molded Case Circuit Breaker
Brand
Square D
SKU
FA24045BC
Quantity
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Square D FA24045BC - 45A 2 Pole Molded Case Circuit Breaker
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Description
Built for industrial power distribution, this 45A thermal-magnetic breaker delivers robust LI protection. The F-frame construction houses fixed trip units to handle commercial demands. Installation into Square D I-Line panelboards is streamlined via the BC phase connection. For facility managers updating older infrastructure, this model crosses over to the HDA260454 replacement SKU. Capable of interrupting 18kA at 480VAC, the device incorporates the signature Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | FA |
| Amperage | 45A |
| 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/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 Connection BC |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated |
Product FAQs
6 answersWhat panelboards accept the FA24045BC circuit breaker?
This plug-on breaker is designed exclusively for Square D I-Line panelboards and switchboards. It is not compatible with standard QO, NQ, or NF load centers.
What does the BC suffix mean on this 2-pole breaker?
The BC suffix indicates that the breaker is factory-configured to connect specifically to the B and C phases of the I-Line bus. You must verify your required phase arrangement before installation.
What is the modern replacement for the legacy FA24045BC?
The FA series is a legacy F-Frame breaker. For a current generation replacement, Square D offers the PowerPact H-Frame series, which mounts into the same I-Line panelboards and provides equivalent or higher interrupting ratings.
Are the trip settings adjustable on this F-Frame breaker?
No, the FA24045BC features a fixed thermal-magnetic trip unit. Both the long-time (thermal) and instantaneous (magnetic) trip functions are factory set and non-adjustable.
What wire gauge is supported by the terminals on the FA24045BC?
The standard lugs on this breaker accept 14 AWG through 1/0 AWG copper or aluminum wire.
Is joint compound required when mounting this breaker onto the I-Line bus?
Yes. When installing or reinstalling an I-Line circuit breaker, Square D recommends applying the appropriate joint compound (such as PJC 7201) to the bus connections to maintain conductivity and prevent overheating.
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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.