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Square D FH26050 Molded Case Circuit Breaker
- 50A
- 2 Pole
- I-Line
Square D
FH26050
Molded Case Circuit Breaker
Brand
Square D
SKU
FH26050
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Square D FH26050 - 50A 2 Pole Molded Case Circuit Breaker
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Description
Supplying reliable overcurrent protection for industrial environments, this 50A molded case circuit breaker utilizes thermal-magnetic trip technology. The F-frame unit provides essential long-time and instantaneous (LI) functions to prevent equipment damage. Designed for Square D I-Line panelboards, it features a plug-on mounting style with an AB phase configuration. Capable of handling severe faults, it boasts a 65 kAIC rating at 240VAC and incorporates a visual trip indicator.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH26050 |
| 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 | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, Square D I-Line Switchboards |
| 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| 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, Trip-Free Mechanism |
Product FAQs
7 answersWhat panelboards are compatible with the FH26050 circuit breaker?
This breaker is designed for use in legacy Square D I-Line panelboards and switchboards. It utilizes an I-Line style plug-in connection for secure mounting directly onto the bus assembly.
Is the Square D FH26050 still in active production?
The FH26050 is part of the legacy F-Frame series, which has been phased out by Square D. For modern upgrades or direct replacements, the PowerPact H-Frame or B-Frame series are typically used in I-Line panels.
How do the phase connections work for this 2-pole I-Line breaker?
Because it mounts directly to the I-Line bus, 2-pole breakers require a specific phase configuration. The base catalog number often defaults to an AB phase connection, but AC or BC configurations, such as FH26050AC or FH26050BC, may be required depending on your panel layout.
What wire sizes are accepted by the lugs on the FH26050?
The standard mechanical lugs accept 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire. Ensure proper torque is applied during installation to maintain a secure connection.
Can the FH26050 be used in DC applications?
Yes, this thermal-magnetic breaker is rated for use in DC circuits up to 250VDC, where it provides a 10kA interrupting capacity.
What is the difference between the FA and FH series breakers?
While both share the same physical F-Frame footprint, the FH series features a higher interrupting capacity. The FH26050 provides up to 25kA at 480VAC, whereas the standard FA series offers lower fault current ratings.
Does this breaker include a visual trip indicator?
Yes, Square D F-Frame breakers feature a Visi-Trip indicator. When the breaker trips, the handle snaps to a center position and a highly visible red indicator appears, making it easy to identify a tripped circuit in a crowded panel.
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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