Delivering 65kA of interrupting capacity at 480VAC, the Square D GJL36060 is a 3-pole, 60A MCCB designed for demanding commercial applications. It belongs to the proven PowerPact G-frame series, built for switchboards and control panels. Equipped with line and load lugs, this unit-mount breaker is an exact replacement for legacy G-frame installations, with the HJL36060 serving as its modern equivalent. It features a non-interchangeable thermal-magnetic trip unit with fixed LI functions.
HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip
Product FAQs
7 answers
What does the "J" in the GJL36060 catalog number indicate?
The "J" designates the breaker's interrupting rating tier within the PowerPacT G-frame family. For this model, the J-rating provides a 65kA interrupting capacity at 480V AC and 100kA at 240V AC.
What does the "L" in GJL36060 stand for?
The "L" indicates the termination style. It means the breaker is supplied with factory-installed mechanical lugs on both the line and load ends for feed-thru wiring.
What does the "LI" trip function mean on this breaker?
"LI" stands for Long-Time and Instantaneous trip functions. The Long-Time (thermal) function protects against sustained overloads, while the Instantaneous (magnetic) function provides immediate tripping during severe short circuits.
Can the trip settings on the GJL36060 be adjusted in the field?
No. This breaker features a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. It does not offer adjustable trip dials.
Can the GJL36060 be installed in an I-Line panelboard?
No. This is a unit-mount, feed-thru circuit breaker designed for control panels, switchboards, and standalone enclosures. It does not have the plug-on jaws required for Square D I-Line panelboards.
Is this breaker suitable for 240V or 480V systems?
Yes. Although it has a maximum rating of 600V AC, it is fully compatible with lower voltage systems including 480V, 277V, 240V, and 208V AC. The interrupting capacity increases at lower voltages, reaching up to 100kA at 240V.
What wire sizes are accepted by the factory lugs?
The included lugs are rated to accept 14 AWG to 1/0 AWG copper wire, or 8 AWG to 1/0 AWG aluminum wire.
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