Providing high-capacity protection, the Square D HJL26100 is a 100A, 2-pole MCCB from the PowerPacT H-Frame family. It utilizes thermal-magnetic trip units to deliver reliable long-time and instantaneous (LI) defense. Designed with a unit mount form factor, this breaker fastens securely into control panels. It comes standard with lugs that accept 14 to 3/0 AWG wiring. With a 65 kAIC capacity at 480VAC, this current-limiting breaker features a Visi-Trip visual indicator.
Yes, standard unit-mount PowerPacT H-Frame circuit breakers with factory-sealed thermal-magnetic trip units, such as the HJL26100, are suitable for reverse feeding.
What type of wire connections does this breaker use?
The HJL26100 is a unit-mount breaker that comes factory-equipped with line and load side lugs. These lugs accept 14 AWG to 3/0 AWG aluminum or copper conductors.
Can I install the HJL26100 in a Square D I-Line panelboard?
No, the HJL26100 is a unit-mount breaker designed for feed-thru applications in enclosures or switchboards. For an I-Line panelboard, you must use an I-Line specific H-Frame breaker, which features a plug-on bracket on the line side rather than standard lugs.
What does the J in the HJL26100 part number indicate?
In the Square D PowerPacT nomenclature, the J designates the interrupting capacity of the breaker. For this frame, it indicates a rating of 100kA at 240VAC, 65kA at 480VAC, and 25kA at 600VAC.
How does the adjustable magnetic trip work on the HJL26100?
This breaker features a fixed thermal element for overload protection and an adjustable magnetic element for short-circuit protection. You can adjust the magnetic trip threshold using the dial on the front of the breaker to coordinate with other protective devices in your system.
Is the HJL26100 current limiting?
Yes, Square D PowerPacT H-Frame breakers with a J interrupting rating are designed as current-limiting circuit breakers. They help reduce peak let-through current during a short circuit fault to protect downstream equipment.
What does the L in the HJL26100 catalog number mean?
The L indicates the termination type. In this case, it means the breaker is a unit-mount configuration supplied with mechanical lugs on both the line and load ends.
Can I use the HJL26100 in a DC circuit?
Yes, this thermal-magnetic breaker is rated for use in DC applications up to 250VDC, with an interrupting rating of 20kA at 250VDC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Square D HJL36040 - 40A 3 Pole Molded Case Circuit Breaker
I recommend this product
Rated 5 out of 5 stars
4/9/26
Great Customer Service
Working with Superbreakers the team is so helpful. They answer the phone and are very accommodating. We had an issue with the refurbished breaker not working out and they helped get a new one out right away.