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Square D FA24070BC Molded Case Circuit Breaker
- 70A
- 2 Pole
- I-Line
Square D
FA24070BC
Molded Case Circuit Breaker
Brand
Square D
SKU
FA24070BC
Quantity
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Square D FA24070BC - 70A 2 Pole Molded Case Circuit Breaker
New
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Square D FA24070BC - 70A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FA24070BC |
| Series | FA |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line 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, Alarm Switch |
|---|---|
| Accessories | Phase Connection BC |
| 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, 80% Rated |
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Square D FA24070BC - 70A 2 Pole Molded Case Circuit Breaker
Re-Certified
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| Brand | Square D |
|---|---|
| Part Number | FA24070BC-R |
| Series | FA |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line 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, Alarm Switch |
|---|---|
| Accessories | Phase Connection BC |
| 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, 80% Rated |
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Description
The FA24070BC is a 2-pole, 70A molded case circuit breaker from Square D's legacy F-Frame series. It provides thermal-magnetic protection with fixed long-time and instantaneous trip functions for commercial facilities. Featuring a BC phase connection, it mounts into Square D I-Line panelboards. For modern system upgrades, this legacy breaker is replaced by the PowerPacT BDA24070Y4. Rated for 18 kAIC at 480V, it includes HACR certification and a Visi-Trip indicator for quick fault identification.Specifications
| Brand | Square D |
|---|---|
| Part Number | FA24070BC |
| Series | FA |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480Y/277VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line 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, Alarm Switch |
|---|---|
| Accessories | Phase Connection BC |
| 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, 80% Rated |
Product FAQs
7 answersWhat does the BC suffix indicate on the FA24070BC catalog number?
The BC designates that this breaker is factory-configured for a B and C phase connection on the I-Line busbar. This specific phase arrangement is required for proper load balancing and alignment within the panelboard.
What is the modern replacement for the legacy FA24070BC circuit breaker?
The FA series is a legacy F-Frame breaker. For modern installations or direct replacements, Square D has transitioned to the PowerPacT B-Frame series. The direct cross-reference is the BDA24070Y4, which maintains the 70A rating, 2-pole design, and BC phase connection.
Are the thermal and magnetic trip settings adjustable on this unit?
No, the FA24070BC features a thermal-magnetic trip unit with fixed long-time and instantaneous trip functions. Neither the thermal overload nor the magnetic short-circuit settings can be adjusted in the field.
How does this breaker mount into the panelboard?
The FA24070BC utilizes an I-Line plug-on mounting system. It features integrated jaws that clamp directly onto the panelboard bus, making the electrical connection and mechanically securing the breaker without the need for separate mounting brackets or hardware.
What wire sizes are compatible with the load-side lugs?
The factory-installed load lugs accept wire gauges ranging from 14 AWG to 1/0 AWG. The lugs are dual-rated for use with both copper (Cu) and aluminum (Al) conductors.
Is this breaker suitable for systems with a 25kA available fault current at 480VAC?
No, the FA24070BC has a maximum interrupting rating of 18kAIC at 480VAC. If your system has an available fault current of 25kA at 480V, you must select a breaker with a higher interrupting capacity, such as the FH or FC series.
Can I install this F-Frame breaker in a standard QO or NQ panelboard?
No, the FA24070BC is an I-Line F-Frame breaker designed exclusively for Square D I-Line panelboards and switchboards. It will not fit in QO, NQ, or NF series panelboards, which require different breaker frame types and mounting configurations.
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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.