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Square D FA14020A Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FA14020A
Molded Case Circuit Breaker
Brand
Square D
SKU
FA14020A
Quantity
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Square D FA14020A - 20A 1 Pole Molded Case Circuit Breaker
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Description
The FA14020A is a 1-pole, 20A molded case circuit breaker from Square D. Built for commercial use, this legacy F-Frame unit delivers reliable overcurrent protection. Designed for Square D I-Line panelboards, it utilizes a plug-on mounting style for efficient setup. This model is officially replaced by the BDA140201 for modern upgrades. Rated at 18 kAIC at 277VAC, it features fixed thermal-magnetic trip functions, a Visi-Trip indicator, and a factory-configured Phase A connection.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA14020A |
| Series | FA |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 120VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 120VAC, 18kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| Wire Gauge | 14-4 AWG (Cu), 12-4 AWG (Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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, Padlock Attachment |
|---|---|
| Accessories | Lugs (AL50FA) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator, Non-Interchangeable Trip |
Product FAQs
7 answersWhat does the "A" suffix in the FA14020A catalog number indicate?
The "A" suffix designates that this 1-pole breaker is factory-configured for an A-phase connection on the I-Line bus. It will only engage with the A-phase stab in the panelboard.
What is the direct modern replacement for the legacy FA14020A?
Square D has transitioned the legacy F-Frame series to the PowerPact B-Frame. The direct replacement for this unit is the BDA140201, which maintains the 20A rating, 18kAIC at 277V, and A-phase I-Line connection.
Can the FA14020A be installed in standard NQ or NF panelboards?
No. This breaker requires an I-Line style plug-in connection and is exclusively compatible with Square D I-Line panelboards and switchboards. It will not fit in NQ, NF, QO, or Homeline load centers.
How does the FA14020A connect to the panelboard bus?
This breaker features an I-Line style plug-on connection. The line-side jaws plug directly onto the I-Line bus stack, while the breaker body is secured to the panelboard mounting rail, eliminating the need for separate mounting hardware or cable connections to the bus.
Does the FA14020A include a push-to-trip feature?
Yes, this breaker is equipped with a push-to-trip button. This allows electricians to manually trip the breaker to verify the mechanical operation of the tripping mechanism during routine maintenance.
Is the FA14020A suitable for use with heating, air conditioning, and refrigeration equipment?
Yes, this breaker is HACR rated, making it approved for use with multi-motor and combination-load HVAC and refrigeration equipment.
Is the FA14020A rated for 100% continuous operation?
No, this is a standard-rated breaker. Per the National Electrical Code (NEC), continuous loads should not exceed 80% of its 20A rating (16 amps).
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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.