The HDA260904 is a 2-pole, 90A molded case circuit breaker from Square D's PowerPacT H-Frame family. Engineered for industrial applications, it delivers reliable thermal-magnetic overcurrent protection. Designed with an I-Line mounting style, this unit installs into Square D I-Line panelboards and switchboards. It serves as a drop-in replacement for the legacy FA26090BC. Rated for 18kAIC at 480V, it features a BC phase connection, Visi-Trip indicator, and HACR certification.
Can I install the HDA260904 in a standard Square D NQ or NF panelboard?
No. This breaker features an I-Line style plug-in connection and is exclusively compatible with Square D I-Line panelboards and switchboards. It will not fit NQ, NF, or QO series panels.
What does the number 4 at the end of the HDA260904 catalog number indicate?
The 4 indicates a BC phase connection for the I-Line plug-in jaw. This means the breaker will draw power from the B and C phases of the I-Line bus.
What does the D in the HDA260904 part number represent?
The D indicates the interrupting rating code for this PowerPacT H-frame breaker. A D-rated breaker provides an interrupting capacity of 25kA at 240VAC, 18kA at 480VAC, and 14kA at 600VAC.
What are the tightening torque specifications for the load side lugs on the HDA260904?
For the standard AL150HD mechanical lugs, torque the terminals to 44.3 lbf-in (5 N.m) for 14 AWG to 10 AWG wire, and 123.9 lbf-in (14 N.m) for 8 AWG to 3/0 AWG wire.
Is the HDA260904 suitable for reverse feeding applications?
Yes. PowerPacT H-frame thermal magnetic circuit breakers with factory sealed trip units are suitable for reverse connection.
Is this 90A PowerPacT H-frame breaker HACR rated?
Yes, the HDA260904 is HACR rated, making it suitable for use with heating, air conditioning, and refrigeration equipment.
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Review summary
Customers rate this product 5.0 out of 5 based on 11 reviews.