Square D FA36020G35 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
FA36020G35
Molded Case Circuit Breaker
Brand
Square D
SKU
FA36020G35
Quantity
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Square D FA36020G35 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Calibrated for 50°C (122°F) ambient temperatures, this 20A F-Frame breaker prevents nuisance tripping in hot industrial environments. It delivers reliable long-time and instantaneous overcurrent protection. The unit mounts into Square D I-Line panelboards and switchboards. While the HDA36020 serves as a base replacement, it lacks the specialized G35 high-temperature calibration found on this specific model.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA36020G35 |
| 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, 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, Undervoltage Release, Auxiliary Switch, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 50C |
| Construction Features | HACR Rated, 50C Ambient Calibration |
Product FAQs
6 answersWhat type of panelboards is the FA36020G35 compatible with?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection that mounts directly to the interior bus system.
What wire sizes and materials are accepted by the lugs on the FA36020G35?
The factory-installed lugs accept wire gauges ranging from 14 AWG to 4 AWG. The terminals are rated for use with both copper (Cu) and aluminum (Al) conductors.
Can the FA36020G35 be used in direct current (DC) applications?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for DC applications up to 250VDC, providing an interrupting capacity of 10kAIC.
Are the trip settings on this breaker adjustable?
No, the FA36020G35 features a fixed thermal-magnetic trip unit. Both the long-time (overload) and instantaneous (short-circuit) trip functions are factory-set and cannot be adjusted in the field.
Is the FA frame series still the current standard for Square D?
The FA frame is classified as a legacy molded case circuit breaker family. While exact replacements like the FA36020G35 are still sourced for existing I-Line panelboards, Square D has transitioned to the PowerPact H-frame series (such as the HDA36020) for modern upgrades and new installations.
Does this breaker provide both overload and short-circuit protection?
Yes, the FA36020G35 utilizes a thermal-magnetic trip mechanism. The thermal component provides long-time protection against sustained overloads, while the magnetic component provides instantaneous protection against high-level short circuits.
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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.