Designed for commercial facilities, the Square D HDA260802 is a 2-pole, 80A molded case circuit breaker from the PowerPact H-frame family. It ensures dependable thermal-magnetic protection for 600VAC networks. Equipped with an AC phase connection, this unit plugs into Square D I-Line panelboards. It serves as a seamless upgrade and replacement for legacy FA26080AC breakers. The breaker features an 18 kAIC rating at 480V, long-time and instantaneous (LI) trip functions, and is HACR rated.
What panelboards are compatible with the HDA260802 circuit breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-on connection that mounts directly to the busbar.
What does AC phasing mean for this 2-pole I-Line breaker?
The AC designation indicates the breaker's line-side jaw contacts are factory-configured to connect specifically to the A and C phases on the I-Line busbar.
Can the HDA260802 replace older Square D FA or FH series breakers?
Yes, the PowerPacT H-frame series is the modern replacement for legacy 100A F-frame breakers, such as the FA26080AC. It fits the same I-Line bus but offers updated thermal-magnetic protection.
Is the HDA260802 rated for direct current systems?
Yes, this breaker is rated for up to 250VDC with a 20kA interrupting capacity, making it suitable for both AC and DC applications.
What wire sizes are accepted by the lugs on the HDA260802?
The factory-installed mechanical lugs accept 14 AWG to 3/0 AWG aluminum or copper wire.
What type of trip unit does the HDA260802 use?
It features a fixed thermal-magnetic trip unit with Long-Time and Instantaneous protection functions. The trip settings are factory-fixed and non-adjustable.
What does the D in the HDA260802 part number signify?
In the Square D PowerPacT nomenclature, the D indicates the breaker's interrupting rating tier, which provides 25kA at 240VAC, 18kA at 480VAC, and 14kA at 600VAC.
How does the I-Line mounting style work on the HDA260802?
The breaker features plug-on jaw connections on the line side that snap directly onto the I-Line panelboard bus, while the load side uses standard mechanical lugs for wire termination. A retaining bracket secures the breaker to the backpan.
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Review summary
Customers rate this product 5.0 out of 5 based on 11 reviews.