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Square D FA340301021 Molded Case Circuit Breaker
- 30A
- 3 Pole
- I-Line
Square D
FA340301021
Molded Case Circuit Breaker
Brand
Square D
SKU
FA340301021
Quantity
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Square D FA340301021 - 30A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial power distribution, this 30A thermal-magnetic MCCB provides reliable overload and short-circuit protection. It installs into Square D I-Line panelboards and features a factory-installed 120VAC shunt trip (indicated by the 1021 suffix) for remote tripping applications. Rated for 25kAIC at 240V and 18kAIC at 480V, it includes Visi-Trip visual indication. This legacy F-frame model is replaced by the PowerPacT H-frame HDA34030SA.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA340301021 |
| Series | FA |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| 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 | Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included, Shunt Trip (Factory Installed) |
| 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 does the 1021 suffix mean on the FA340301021 catalog number?
The 1021 suffix indicates that this breaker includes a factory-installed 120/240VAC shunt trip. This allows the breaker to be tripped remotely via an external control signal, which is often required for emergency stop or fire alarm integration.
Can I install the FA340301021 in a standard Square D NQ or NF panelboard?
No. This breaker features an I-Line plug-in mounting connection. It is specifically designed for Square D I-Line panelboards and switchboards, and will not fit in NQ, NF, or QO load centers.
Is the FA340301021 a direct replacement for older FA series breakers?
Yes, this legacy F-frame MCCB will directly replace older Square D FA breakers with the same pole count and amperage in existing I-Line panelboards. Ensure your application requires the 120/240VAC shunt trip before replacing a standard breaker with this specific model.
How is the factory-installed shunt trip connected during installation?
The shunt trip mechanism features control wire leads that exit the breaker housing. These leads must be wired to a 120VAC or 240VAC control power source through a normally open contact, such as a remote push button or fire alarm relay, to actuate the remote trip function.
What safety applications require the shunt trip feature found on this breaker?
The 120/240VAC shunt trip is commonly used to integrate the breaker into facility safety systems. It allows the circuit to be automatically disconnected by fire suppression systems, emergency stop buttons, or remote control panels to protect personnel and equipment during an emergency.
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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.