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Square D FH36025 Molded Case Circuit Breaker

  • 25A
  • 3 Pole
  • I-Line
Square D FH36025
Molded Case Circuit Breaker
Brand Square D
SKU FH36025
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  • 25A
  • 3 Pole
  • I-Line

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Square D FH36025 - 25A 3 Pole Molded Case Circuit Breaker

Square D FH36025 - 25A 3 Pole Molded Case Circuit Breaker

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$495.00 In Stock

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Description

Built for heavy-duty commercial environments, the Square D FH36025 is a 3-pole, 25A MCCB. It utilizes proven thermal-magnetic trip technology to protect electrical infrastructure from overloads and short circuits. Designed for Square D I-Line panelboards, the plug-on mounting style allows for rapid installation. Facility managers looking for current equivalents can cross-reference this legacy component to the HGA36025.

Specifications

Key specifications
Brand Square D
Part Number FH36025
Series FH
Amperage 25A
Poles 3
Mounting Style I-Line
Voltage 240VAC, 480VAC, 600VAC, 250VDC
Phase 3
AIC Rating 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC
Fit and installation
Frame Type FH
Terminal Type Lugs
For Use With Square D I-Line Panelboards
Wire Gauge 14-4 AWG (Cu/Al)
Max Wire 4 AWG
Min Wire 14 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment
Accessories Load Side Lugs Included
Standards CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval CE, CSA, HACR, UL
Temp Rating 40C
Construction Features HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip

Product FAQs

7 answers
What type of panelboard is the Square D FH36025 designed for?

The FH36025 is designed exclusively for Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection on the line side that mounts directly onto the panel's vertical bus stack.

What is the difference between the Square D FH and FA frame circuit breakers?

The H in the FH frame designates a high interrupting rating, whereas the FA frame is the standard interrupting version. The FH36025 provides a 25 kAIC rating at 480VAC, compared to the standard 18 kAIC rating of an equivalent FA breaker.

How does the I-Line blow-on jaw connection work on this breaker?

The FH36025 utilizes a specialized blow-on jaw design for its line-side connection. During a high-level short circuit, the magnetic forces generated draw the connector jaws closer together, gripping the I-Line bus bar more firmly to maintain a secure electrical connection.

Is the Square D FH36025 a legacy circuit breaker, and what is its modern replacement?

Yes, the FH36025 is part of the legacy Square D F-Frame series. For modern upgrades or replacements, Schneider Electric introduced the PowerPact H-Frame series. The direct modern equivalent for this 25A I-Line breaker is the HGA36025.

Does installing the FH36025 require bolting to the panel bus?

No. The I-Line plug-in design allows the breaker to ratchet directly onto the bus stack using a screwdriver, eliminating the need for bus bar bolts and reducing installation time.

What are the magnetic trip settings for the FH36025?

This 25A thermal-magnetic breaker has fixed trip settings. It features a magnetic hold current of 275 Amps and a magnetic trip current of 600 Amps.

What wire sizes are accepted by the load-side lugs on the FH36025?

The factory-installed load lugs (terminal identifier AL50FA) accept 14 to 4 AWG copper or aluminum wire.

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 10 reviews
Rating
Ratings
10 reviews
  • DM
    Donald M.
    Verified Buyer
    Reviewing
    Square D FH36030 - 30A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/18/26
    Excellent 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

  • PH
    payton h.
    Verified Buyer
    Reviewing
    Square D FH36090 - 90A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/17/26
    great

    great straightforward company has almost everything you could ever need in stock

  • SG
    Shawn G.
    Verified Buyer
    Reviewing
    Square D FH36020 - 20A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    1/20/26
    Thanks !

    Excellent service & gear per usual !

    Thanks !

  • E
    Earnest
    Verified Buyer
    Reviewing
    Square D FH36060 - 60A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    10/3/25
    Fast delivery and quality

    The breaker was in great condition.

  • JP
    Jason P.
    Verified Buyer
    Reviewing
    Square D FH36050 - 50A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    9/5/25
    Breakers

    Order was placed and they came in on time in good condition