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Square D FA26040CA Molded Case Circuit Breaker
- 40A
- 2 Pole
- I-Line
Square D
FA26040CA
Molded Case Circuit Breaker
Brand
Square D
SKU
FA26040CA
Quantity
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Square D FA26040CA - 40A 2 Pole Molded Case Circuit Breaker
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40A 2 Pole Molded Case Circuit Breaker
40A 2 Pole Molded Case Circuit Breaker
40A 2 Pole Molded Case Circuit Breaker
Description
Engineered for commercial applications, this 40-amp F-frame breaker provides reliable thermal-magnetic protection for industrial electrical systems. The unit features a factory-configured CA phase connection for specific load balancing requirements. It mounts into standard Square D I-Line panelboards and switchboards. For facility modernization, this legacy component is officially replaced by the newer PowerPact HDA260405 model. Rated for 25 kAIC at 240VAC, it includes the Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA26040CA |
| Series | FA |
| Amperage | 40A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 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), 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| 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
7 answersWhat does the CA suffix indicate on the FA26040CA catalog number?
The CA suffix specifies the factory-configured phase connection for the I-Line bus. This 2-pole breaker is built to connect exclusively to the C and A phases in the panelboard.
Can the phase connection on this breaker be modified in the field?
No, the phase connections on Square D I-Line breakers are factory-assembled and cannot be changed in the field. If your load balancing requires an AB or BC connection, you must source a breaker with the corresponding suffix.
What panelboards are compatible with the FA26040CA?
This breaker is designed exclusively for Square D I-Line power distribution panelboards and switchboards. It features a plug-on jaw connection that mounts directly to the I-Line bus stack.
Is the Square D FA frame still in active production?
The FA frame is a legacy component. For modern facility upgrades or replacements, Square D has transitioned to the PowerPact H-Frame series, which also offers I-Line mounting options for backward compatibility in existing switchboards.
How is the FA26040CA secured to the panelboard bus?
The breaker utilizes a plug-on jaw connection that snaps onto the I-Line bus stack. Once seated, it is mechanically fastened to the backpan using a retaining screw to ensure a secure connection under high fault currents.
What type of protection does the LI trip function provide?
The LI designation indicates a thermal-magnetic trip unit. It provides Long-Time (L) protection for thermal overloads and Instantaneous (I) protection for magnetic short circuits. Both the thermal and magnetic trip points are fixed on this model.
Is this breaker suitable for direct current (DC) systems?
Yes, the FA26040CA is rated for DC applications up to 250VDC, where it provides a 10kAIC interrupting rating.
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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.