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Square D FA24030CB Molded Case Circuit Breaker
- 30A
- 2 Pole
- I-Line
Square D
FA24030CB
Molded Case Circuit Breaker
Brand
Square D
SKU
FA24030CB
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Square D FA24030CB - 30A 2 Pole Molded Case Circuit Breaker
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30A 2 Pole Molded Case Circuit Breaker
30A 2 Pole Molded Case Circuit Breaker
30A 2 Pole Molded Case Circuit Breaker
Description
Rated for 30A, the Square D FA24030CB is a 2-pole molded case circuit breaker from the legacy F-Frame family. It delivers reliable thermal-magnetic protection for commercial power networks. This breaker features an I-Line mounting connection for use with Square D I-Line panelboards. Facilities looking to upgrade can replace this legacy unit with the PowerPact HDA260302. With an interrupting capacity of 18 kAIC at 480VAC, it includes a specific C-B phase connection and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Series | FA |
| Amperage | 30A |
| 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 |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 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 | Lugs (AL100FA) |
| 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, Non-Interchangeable Trip, Phase Connection CB |
Product FAQs
6 answersWhat does the CB suffix mean on the FA24030CB?
The CB suffix indicates the breaker is configured for a C-B phase connection on Square D I-Line panelboards and switchboards.
Is the Square D FA24030CB obsolete, and what is the direct replacement?
Yes, the legacy F-Frame series has been phased out. The modern replacement for this 30A, 2-pole I-Line breaker is the Square D PowerPact H-Frame, specifically catalog number HDA260302.
Can the FA24030CB be used in DC applications?
Yes, this thermal-magnetic breaker is rated for use in DC systems up to 250VDC with an interrupting capacity of 10 kA.
What wire size does the FA24030CB accept?
The standard AL50FA mechanical lugs accept 14 AWG to 4 AWG copper or aluminum conductors.
Where can I find the torque specifications for the FA24030CB terminals?
Torque specifications are printed directly on the circuit breaker label. Always follow the manufacturer-listed torque values based on the specific wire gauge being installed.
Which panelboards are compatible with the FA24030CB?
This breaker features a plug-on I-Line mounting connection and is designed exclusively for use in Square D I-Line panelboards and switchboards. It will not fit standard QO or NQ panels.
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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.