Engineered for industrial applications, the Square D FA22070AB is a 2-pole, 70A molded case circuit breaker from the legacy F-Frame family. It delivers dependable overcurrent protection for demanding electrical systems. Featuring an I-Line plug-in mounting style, it is configured for AB phase connections in Square D panelboards. For modern upgrades, this unit is replaced by the HDA260701. Rated 10kAIC at 240VAC, it includes a Visi-Trip indicator and HACR rating.
What does the AB suffix indicate on the FA22070AB catalog number?
The AB suffix specifies the phase connection. It indicates that the breaker is configured to connect to the A and B phases on the bus of a Square D I-Line panelboard.
Which panelboards accept the FA22070AB circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It utilizes a specific plug-on mounting style and is not compatible with standard NQ, NF, or QO load centers.
How is the FA22070AB installed in the panel?
It uses an I-Line plug-on connection on the line side that attaches directly to the stacked bus assembly. The load side features mechanical lugs for terminating the branch circuit conductors.
What are the wire size requirements for the load side lugs?
The factory-installed mechanical lugs accept copper or aluminum conductors ranging from 14 AWG to 1/0 AWG.
Is the FA22070AB suitable for DC voltage applications?
Yes, in addition to its 240VAC rating, this breaker is rated for 250VDC applications with a maximum interrupting capacity of 5kAIC.
Can the trip curve be adjusted on this breaker?
No, the FA22070AB features a standard thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip functions. The settings cannot be modified in the field.
What is the modern PowerPact replacement for the FA22070AB?
The FA series is a legacy F-frame breaker. For modern upgrades, Schneider Electric replaces it with the PowerPact H-frame series. The direct equivalent for a 70A, 2-pole, AB-phase I-Line breaker is catalog number HDA260701.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 70 reviews.
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Rated 5.0 out of 5 stars
Based on 70 reviews
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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.
Square D FA34030 - 30A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
9/14/26
Great 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.
AH
Ann H.
Verified Buyer
Reviewing
Square D FA36100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/22/26
Professional 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!
RE
rene e.
Verified Buyer
Reviewing
Square D FA34070 - 70A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
8/14/26
breaker
breaker was just as discribed
BE
Ballentine E.
Verified Buyer
Reviewing
Square D FA24060AC - 60A 2 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/15/26
Great
Accurate and on time.
EB
Edward B.
Verified Buyer
Reviewing
Square D FA32100 - 100A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
7/1/26
As 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.