Built to handle demanding 600V industrial distribution networks, this 15A two-pole F-frame breaker features a factory-configured Phase AB connection. The rugged molded case design incorporates fixed long-time and instantaneous (LI) trip functions to safeguard critical commercial circuits. As a trusted legacy component for Square D I-Line panelboards and switchboards, it provides an exact physical match for older infrastructure while being officially superseded by the PowerPacT HGA26015.
What does the AB suffix indicate on the FH26015AB breaker?
The AB suffix specifies the phase connection for the I-Line bus. This specific breaker is configured to connect to Phase A and Phase B in the panelboard or switchboard.
Which panelboards are compatible with the FH26015AB?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features a plug-on design specific to the I-Line bus system and will not fit standard load centers or NQ/NF panels.
What wire size and material is accepted by the lugs on this breaker?
The factory-installed lugs accept wire sizes ranging from 14 AWG to 4 AWG. Both copper (Cu) and aluminum (Al) conductors are supported.
Is this breaker suitable for direct current (DC) applications?
Yes, the FH26015AB is rated for DC applications up to 250VDC with a maximum interrupting capacity of 10kA.
Is the Square D FH frame still in active production?
The FH frame is classified as a legacy molded case circuit breaker. While no longer the current generation, it remains a direct replacement for existing I-Line installations requiring an F-frame footprint.
Does this breaker require a separate mounting bracket for installation?
No separate mounting hardware is required. The I-Line style plug-in connection allows the breaker to mount directly onto the interior bus assembly of the panelboard.
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Review summary
Customers rate this product 5.0 out of 5 based on 10 reviews.