The Square D HGA36060U31X is a 3-pole, 60A molded case circuit breaker from the PowerPacT H-Frame family, built for commercial and industrial facilities. This unit installs into Square D I-Line panelboards and switchboards. The I-Line mounting style allows for quick phase connections, while load-side lugs accept 14 to 3/0 AWG wire. Equipped with a Micrologic 3.2 electronic trip unit, it provides adjustable LI protection. It is HACR rated and delivers 65 kAIC at 240VAC.
CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489
Approval
CCC, CE, CSA, IEC, NOM, UL
Temp Rating
-25C to 70C
Construction Features
HACR Rated, Current Limiting, Reverse Feed, True RMS Sensing
Product FAQs
6 answers
What type of enclosures or panels accept the HGA36060U31X?
This breaker features an I-Line style plug-in connection on the line side, making it exclusively compatible with Square D I-Line panelboards and switchboards. It is not designed for standard unit-mount or load center applications.
What does the U31X suffix mean on this PowerPacT H-Frame breaker?
The U31X designation indicates the breaker is equipped with a Micrologic 3.2 electronic trip unit. This provides adjustable Long-Time and Instantaneous (LI) protection, offering more precise coordination than standard thermal-magnetic trip units.
What wire sizes are compatible with the load lugs on the HGA36060U31X?
The factory-installed load-side mechanical lugs accept 14 AWG to 3/0 AWG aluminum or copper conductors.
Can the HGA36060U31X replace older Square D 60A I-Line breakers?
Yes, the PowerPacT H-Frame occupies the same I-Line mounting space as Square D's discontinued F-Frame breakers. It can serve as a direct plug-on replacement for legacy 60A FA, FH, and FC series I-Line breakers, though the trip unit technology differs.
How does the HGA36060U31X connect to the panelboard bus?
It uses Square D's I-Line plug-on jaw connections for the line side, which seat directly onto the panelboard bus with a standard ABC phase sequence. The load side utilizes standard mechanical lugs.
Is the HGA36060U31X rated for 80% or 100% continuous current?
This breaker carries a standard 80% continuous current rating.
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