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Square D FH26070AB Molded Case Circuit Breaker
- 70A
- 2 Pole
- I-Line
Square D
FH26070AB
Molded Case Circuit Breaker
Brand
Square D
SKU
FH26070AB
Quantity
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Square D FH26070AB - 70A 2 Pole Molded Case Circuit Breaker
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Description
The FH26070AB is part of Square D's legacy F-Frame series, delivering 70A of thermal-magnetic protection for commercial power distribution. It provides reliable long-time and instantaneous trip functions. This unit installs into Square D I-Line panelboards and switchboards. For modern system upgrades, it is replaced by the PowerPact H-Frame HGA260701. Featuring an AB phase connection, it delivers a 65kAIC rating at 240V and includes Visi-Trip visual indication.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH26070AB |
| Series | FH |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FH |
|---|---|
| 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 |
| 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 | Phase Connection AB (Factory Configured) |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator |
Product FAQs
6 answersWhat does the "AB" suffix mean in the FH26070AB catalog number?
The "AB" suffix indicates the specific phase connection for the breaker. It is configured to plug into the A and B phases on the bus of a Square D I-Line panelboard.
How does the I-Line mounting system work on this breaker?
The I-Line design uses plug-on jaw contacts that push directly onto the panelboard bus stack for the line-side connection. A captive retaining screw secures the breaker to the panelboard backpan, allowing for fast installation without line-side cabling.
Can this breaker be used in direct current systems?
Yes, while primarily used for alternating current, this breaker is also rated for direct current applications up to 250VDC. It provides a 10kA interrupting capacity when used in DC systems.
What type of protection does the LI trip unit provide?
The thermal-magnetic trip unit features Long-Time (L) and Instantaneous (I) functions. The thermal element provides a delayed trip to protect against sustained overloads, while the magnetic element trips immediately to clear short circuits.
Is the FH frame series still manufactured?
The FH series is part of Square D's legacy F-Frame family. It is considered a legacy product, but exact replacements are commonly sourced to maintain existing I-Line panelboards without needing to upgrade the entire panel.
Can I install this breaker in a standard load center?
No, this breaker is specifically designed for Square D I-Line panelboards and switchboards. It will not fit in standard QO, Homeline, or NQ load centers due to its specialized plug-on bus connection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 10 reviews.
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Rating
10 reviews
- DMDonald M.Verified BuyerReviewingSquare D FH36030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Excellent Service
The support team with Super Breakers went over and beyond in ensuring the breakers were on site for an emergency repair…
CAVA Construction Manager very pleased!
Donald Mayo
Mayo Electric
- PHpayton h.Verified BuyerReviewingSquare D FH36090 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26great
great straightforward company has almost everything you could ever need in stock
- SGShawn G.Verified BuyerReviewingSquare D FH36020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/20/26Thanks !
Excellent service & gear per usual !
Thanks !
- EEarnestVerified BuyerReviewingSquare D FH36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/3/25Fast delivery and quality
The breaker was in great condition.
- JPJason P.Verified BuyerReviewingSquare D FH36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/5/25Breakers
Order was placed and they came in on time in good condition