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Square D FH26070AC Molded Case Circuit Breaker
- 70A
- 2 Pole
- I-Line
Square D
FH26070AC
Molded Case Circuit Breaker
Brand
Square D
SKU
FH26070AC
Quantity
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Square D FH26070AC - 70A 2 Pole Molded Case Circuit Breaker
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Description
Built for industrial applications, this 70A molded case circuit breaker provides robust thermal-magnetic protection. It features long-time and instantaneous trip functions to safeguard commercial electrical systems. Designed for quick integration, the breaker mounts into Square D I-Line panelboards and switchboards. When replacing this legacy F-Frame unit, the PowerPact HGA260702 serves as the modern equivalent. It features an AC phase connection, a 65kAIC rating at 240V, and is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH26070AC |
| 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, Square D I-Line Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Phase Connection AC |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator, Trip-Free Mechanism, Phase Connection AC |
Product FAQs
8 answersWhat does the "AC" suffix indicate on the FH26070AC breaker?
The "AC" suffix specifies the phase connection for the I-Line bus. This 2-pole breaker is configured to connect to the A and C phases of the panelboard or switchboard busbar.
What is the modern replacement for the legacy FH26070AC circuit breaker?
The Square D PowerPact HGA260702 is the modern equivalent for the legacy FH26070AC. It is an H-Frame I-Line breaker that matches the 70A rating, 2-pole configuration, and AC phase connection, while offering equal or higher interrupting ratings.
Can the FH26070AC be installed in a 3-phase I-Line panelboard?
Yes. Although it is a 2-pole breaker, it is designed to plug into standard Square D I-Line panelboards and switchboards. The "AC" designation ensures it will draw power specifically from the A and C phases of the 3-phase system.
Is the FH26070AC suitable for HVAC applications?
Yes, this breaker is HACR rated. This means it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific type of circuit protection.
Does the FH26070AC accept aluminum wiring?
Yes, the factory-installed lugs on the FH26070AC are rated for both copper and aluminum (Cu/Al) conductors. The terminals accept wire sizes ranging from 14 AWG to 1/0 AWG.
What type of protection does the LI trip unit in the FH26070AC provide?
The "LI" designation indicates a thermal-magnetic trip unit providing Long-Time (thermal) protection against overloads and Instantaneous (magnetic) protection against short circuits. Both the thermal and magnetic trip points are fixed on this specific model.
Can I use the FH26070AC in a Square D NQ or NQOD panelboard?
No. The FH26070AC features an I-Line style plug-in connection and is exclusively compatible with Square D I-Line panelboards and switchboards. It will not fit in NQ, NQOD, or NF series panels.
Does the FH26070AC require a separate mounting hardware kit?
No. As an I-Line style plug-in breaker, the FH26070AC features integrated mounting jaws that attach directly to the I-Line busbar. No additional mounting hardware or strap kits are required for installation.
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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