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Square D FA34080 Molded Case Circuit Breaker
- 80A
- 3 Pole
- I-Line
Square D
FA34080
Molded Case Circuit Breaker
Brand
Square D
SKU
FA34080
Quantity
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Square D FA34080 - 80A 3 Pole Molded Case Circuit Breaker
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Square D FA34080 - 80A 3 Pole Molded Case Circuit Breaker
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| Brand | Square D |
|---|---|
| Part Number | FA34080 |
| Series | FA |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| 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 |
Quantity
Square D FA34080 - 80A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA34080-R |
| Series | FA |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| 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 |
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Description
Part of the legacy F-frame series, the Square D FA34080 provides robust overcurrent protection for commercial and industrial electrical systems. This 3-pole, 80A breaker installs into standard I-Line panelboards, utilizing a plug-on design for efficient deployment. It features a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) functions. Rated at 18 kAIC at 480VAC, it includes Visi-Trip technology for quick fault identification and is fully HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA34080-R |
| Series | FA |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| 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 answersHow does the FA34080 physically connect to the panelboard?
This breaker features an I-Line plug-on connection for the line side and mechanical lugs on the load side. It is designed exclusively for phase-to-busbar mounting in Square D I-Line distribution panelboards and switchboards.
Are the load-side lugs included with this circuit breaker?
Yes, factory-installed mechanical lugs are included on the load side. They accommodate 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire.
What is the physical difference between the FA34080 and the FAL34080?
The FA34080 is an I-Line plug-on circuit breaker designed specifically for I-Line panelboards. The FAL34080 is a unit-mount (lug-to-lug) breaker intended for individual enclosures or standard switchboards. They cannot be used interchangeably.
What is the direct modern replacement for the legacy FA34080?
Schneider Electric designates the PowerPact B-frame BDA36080 as the recommended replacement for this legacy F-frame breaker. Upgrading to the B-frame may require different spatial clearances depending on your existing I-Line panel setup.
Is this FA series circuit breaker suitable for HVAC applications?
Yes, this breaker is HACR rated. It is fully certified to provide branch circuit protection for commercial heating, air conditioning, and refrigeration equipment.
How does the FA34080 indicate a tripped condition?
It features Square D Visi-Trip technology. During an overcurrent or short-circuit fault, the handle snaps to a center position and displays a highly visible red indicator, allowing electricians to quickly identify the tripped breaker in a fully populated panel.
Will this F-frame breaker fit into a residential QO or Homeline load center?
No. The FA34080 is an industrial molded case circuit breaker with a specialized I-Line mounting bracket. It is completely incompatible with standard residential load centers and will only fit Square D I-Line distribution infrastructure.
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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.