Square D FA360201021 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
FA360201021
Molded Case Circuit Breaker
Brand
Square D
SKU
FA360201021
Quantity
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Square D FA360201021 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Featuring a factory-installed 120VAC shunt trip accessory, this 20-amp thermal-magnetic breaker enables remote tripping capabilities for emergency shutdowns or automated control systems. It provides standard long-time and instantaneous protection. Built specifically for Square D I-Line panelboards, the unit features a plug-on line-side connection and includes load-side lugs. For newer panel upgrades, this legacy model crosses over to the HDA36020SA replacement breaker.Specifications
| Brand | Square D |
|---|---|
| Series | FA |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| 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 | 14-4 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 | Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included, Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
7 answersWhat does the 1021 suffix mean in the FA360201021 catalog number?
The 1021 suffix indicates that this circuit breaker includes a factory-installed 120/240V AC shunt trip mechanism. This allows the breaker to be tripped remotely via an external control signal.
What type of panelboards will accept the FA360201021 circuit breaker?
This F-frame breaker features an I-Line style plug-in connection and is designed exclusively for use in Square D I-Line panelboards and switchboards. It cannot be used in standard load centers or NQ/NF panels.
What wire sizes and materials are compatible with the lugs on this 20A breaker?
The load side lugs on this breaker accept 14 AWG to 4 AWG wire and are rated for both copper (Cu) and aluminum (Al) conductors.
Can this 600VAC breaker be used in direct current applications?
Yes, the FA360201021 is rated for use on DC systems up to 250VDC, where it provides an interrupting capacity of 10kA.
Are the thermal and magnetic trip settings adjustable on this breaker?
No, this breaker features a thermal magnetic trip unit with fixed long-time and fixed instantaneous trip functions. The trip curve settings cannot be adjusted in the field.
How does the I-Line mounting style work for this breaker?
The I-Line connection allows the breaker to plug directly into the bus stack of an I-Line panelboard. A single captive screw secures the breaker to the backpan, making installation faster and eliminating the need for individual cable connections to the bus.
What is the modern PowerPact replacement for the FA360201021?
The FA360201021 is a legacy F-frame breaker that has been superseded by the Square D PowerPact H-frame series. The direct functional replacement is the HDA36020SA, which matches the 20A rating, I-Line mounting, and 120/240V AC shunt trip functionality.
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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.