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Square D FA36070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- I-Line
Square D
FA36070
Molded Case Circuit Breaker
Brand
Square D
SKU
FA36070
Quantity
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Square D FA36070 - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Square D FA36070 - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA36070 |
| Series | FA |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Quantity
Square D FA36070 - 70A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA36070-R |
| Series | FA |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
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Description
Engineered for industrial applications, the Square D FA36070 provides robust overcurrent protection within an F-Frame footprint. This 3-pole, 70A MCCB utilizes thermal-magnetic trip technology with long-time and instantaneous (LI) functions. The breaker installs into Square D I-Line panelboards and switchboards. For facilities upgrading infrastructure, this legacy unit is replaced by the PowerPact HDA36070. Rated for 600VAC, it features an 18kAIC capacity at 480VAC and a Visi-Trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA36070 |
| Series | FA |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 14kA @ 600Y/347VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Visual Trip Indicator |
Product FAQs
8 answersWhat panelboards will accept the FA36070 circuit breaker?
It is designed exclusively for Square D I-Line panelboards and switchboards. It will not fit in standard unit-mount enclosures, NQ load centers, or QO load centers.
How does the I-Line connection work on this 3-pole breaker?
The line side features blow-on plug-on jaws that attach directly to the panelboard bus stack. The load side uses factory-installed mechanical lugs for hardwiring to the circuit.
What are the allowable wire gauges for the load side?
The standard mechanical lugs accommodate 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire.
What is the modern replacement for the discontinued FA36070?
Schneider Electric has replaced the legacy F-Frame series with the PowerPacT B-Frame and H-Frame families. Direct I-Line replacements typically include catalog numbers like BDA36070 or HDA36070, depending on the required interrupting capacity.
Does this breaker provide adjustable overcurrent protection?
No, it utilizes a thermal-magnetic trip unit with fixed long-time and fixed instantaneous (LI) functions. Both trip thresholds are calibrated at the factory and cannot be adjusted in the field.
Can this breaker be used in DC power circuits?
Yes, in addition to AC distribution, it holds a rating of 10kAIC at 250VDC, making it suitable for specific industrial direct current applications.
Can an FA36070 safely replace an FH36070 I-Line breaker?
This substitution is only permissible if the available system fault current does not exceed the standard interrupting limits of the FA frame. The FH series features higher interrupting capacities, so replacing it with an FA breaker requires verifying the panel's short-circuit requirements.
Does this circuit breaker include ground fault protection?
No, this standard unit only provides thermal overload and magnetic short-circuit protection. It does not have ground fault (GFCI) or equipment protection (EPD) capabilities.
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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.