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Square D FH26050AC Molded Case Circuit Breaker
- 50A
- 2 Pole
- I-Line
Square D
FH26050AC
Molded Case Circuit Breaker
Brand
Square D
SKU
FH26050AC
Quantity
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Square D FH26050AC - 50A 2 Pole Molded Case Circuit Breaker
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Description
Designed for heavy-duty commercial applications, this 50-amp F-Frame breaker offers fixed thermal and magnetic trip functions. The plug-on design mounts into Square D I-Line panelboards using an AC phase connection. Facilities upgrading their infrastructure can substitute this legacy component with the newer HGA260502 H-Frame model. Rated for 65kA interrupting capacity at 240V, it features HACR certification and a visual trip indicator to simplify maintenance troubleshooting.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH26050AC |
| Series | FH |
| Amperage | 50A |
| 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/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 AC |
| 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
7 answersCan I install the FH26050AC in a standard QO or Homeline load center?
No, this breaker features an I-Line plug-in mounting style and is strictly compatible with Square D I-Line panelboards and switchboards. It will not fit in standard residential QO or Homeline load centers.
What does the AC suffix indicate on the FH26050AC?
The AC suffix specifies the phase connection. It dictates that the breaker will draw power from the A and C phases of the I-Line panelboard bus.
Can this 2-pole breaker be used in a 3-phase I-Line panelboard?
Yes, the FH26050AC is a 2-pole breaker that can be installed in a 3-phase I-Line panelboard. The AC suffix ensures it will specifically connect to the A and C phases of the bus system.
What is the current PowerPacT replacement for the legacy FH26050AC?
The FH series is a legacy F-Frame breaker. Facilities looking to upgrade can use the modern PowerPacT H-Frame equivalent, such as the HGA260502. This provides a direct I-Line plug-in replacement while meeting or exceeding the original 25kA at 480VAC interrupting capacity.
How does the FH26050AC connect to the panelboard and the load?
The line side utilizes the Square D I-Line plug-in connection to mount directly onto the panelboard bus. The load side features mechanical lugs that accept 14 to 1/0 AWG copper or aluminum wire.
Does the FH26050AC feature adjustable trip settings?
No, this breaker utilizes a thermal magnetic trip unit with fixed thermal and fixed magnetic settings for both long-time and instantaneous (LI) protection. It does not offer adjustable trip dials.
Is the FH26050AC suitable for direct current (DC) applications?
Yes, in addition to its AC ratings, this thermal magnetic breaker is rated for up to 250VDC with an interrupting capacity of 10kA. This makes it suitable for specific industrial DC control and distribution circuits.
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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