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Square D FA26045BC Molded Case Circuit Breaker
- 45A
- 2 Pole
- I-Line
Square D
FA26045BC
Molded Case Circuit Breaker
Brand
Square D
SKU
FA26045BC
Quantity
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Square D FA26045BC - 45A 2 Pole Molded Case Circuit Breaker
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Description
Designed with BC phase jaws, this 45-amp industrial breaker provides fixed thermal and magnetic trip functions for reliable circuit defense. The specific phase arrangement allows contractors to manage power distribution effectively across three-phase systems. It integrates seamlessly into compatible Square D I-Line switchboards and panelboards. For complete panel retrofits, this configuration is superseded by the PowerPact HDA260454.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA26045BC |
| Series | FA |
| Amperage | 45A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| 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, Undervoltage Release, Alarm Switch, Auxiliary Switch, Padlock Attachment |
|---|---|
| Accessories | Phase BC Jaws |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
5 answersWhat type of panelboards are compatible with the FA26045BC?
This breaker features an I-Line plug-in connection and is exclusively designed for Square D I-Line panelboards and switchboards. It will not fit in standard NQ, NF, or QO series panels.
What does the BC suffix mean on the FA26045BC catalog number?
In Square D I-Line nomenclature, the BC suffix specifies the factory-configured phase connection. This 2-pole breaker is built with jaws that connect directly to the B and C phases of the panelboard bus.
Can I change the phase connection on the FA26045BC in the field?
No, the phase connection on legacy Square D F-Frame I-Line breakers is factory-configured and cannot be modified in the field. You must order the specific catalog suffix (such as AB, BC, or AC) that matches your required phase arrangement.
What is the modern PowerPact replacement for the FA26045BC?
Square D has superseded the legacy F-Frame FA26045BC with the modern PowerPact H-Frame series. The direct replacement for panel retrofits is catalog number HDA260454, which matches the 45A rating, 2-pole configuration, and BC phase connection.
Are the trip settings adjustable on the FA26045BC?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time (thermal) overload protection and the instantaneous (magnetic) short-circuit protection are factory-set and non-adjustable.
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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.