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.
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
Review summary
Customers rate this product 5.0 out of 5 based on 10 reviews.