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Eaton / Westinghouse FA3020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Eaton / Westinghouse
FA3020
Molded Case Circuit Breaker
Brand
Eaton / Westinghouse
SKU
FA3020
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Eaton / Westinghouse FA3020 - 20A 3 Pole Molded Case Circuit Breaker
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20A 3 Pole Molded Case Circuit Breaker
20A 3 Pole Molded Case Circuit Breaker
Description
Manufactured for heavy-duty commercial applications, the Eaton FA3020 is a 20-amp, 3-pole molded case circuit breaker. It provides essential long-time and instantaneous (LI) protection through a fixed thermal-magnetic trip mechanism. This component is engineered to fit perfectly into legacy Westinghouse panelboards and motor control centers. By matching the original F-Frame footprint, it allows for straightforward maintenance. Capable of handling 14 kAIC at 480V, the breaker is HACR rated.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Series | FA |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse Panelboards, Motor Control Centers, Switchboards, Eaton Pow-R-Line C 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, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
8 answersWhat equipment is compatible with the FA3020 circuit breaker?
It is designed to fit legacy Westinghouse panelboards, motor control centers, and switchboards. It is also compatible with Eaton Pow-R-Line C panelboards that accept F-frame breakers.
Is the Westinghouse FA3020 obsolete?
While the Westinghouse brand name is no longer used for this product line, Eaton acquired the legacy Westinghouse and Cutler-Hammer electrical distribution businesses. Eaton continues to manufacture and support the FA3020 under its own brand.
Are the trip settings on the FA3020 adjustable?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit (LI) protection settings are factory set and cannot be adjusted in the field.
Is the FA3020 suitable for direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for use in DC applications up to 250VDC, where it provides an interrupting capacity of 10kAIC.
What wire sizes and materials are accepted by the FA3020 lugs?
The standard terminal lugs on this breaker accept wire sizes ranging from 14 AWG to 1/0 AWG. They are rated for use with both copper (Cu) and aluminum (Al) conductors.
How is the FA3020 mounted in a panelboard?
This is a bolt-on molded case circuit breaker. It must be mechanically fastened directly to the bus bars of a compatible panelboard or switchboard using the appropriate mounting hardware.
Can the FA3020 be installed in standard residential load centers?
No, this is an industrial F-frame molded case circuit breaker. It is physically too large and uses a bolt-on mounting method that is incompatible with standard residential plug-on or bolt-on load centers.
What safety procedures are required when installing a bolt-on MCCB like the FA3020?
Installation must be performed by a qualified electrician. Always de-energize the panelboard or switchboard, apply standard lockout/tagout procedures, and verify the power is off with a properly rated voltage tester before bolting the breaker to the bus bars.
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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.