Square D HJL36020 Molded Case Circuit Breaker

The HJL36020 is a unit-mount breaker, meaning it mounts directly to a backpan or mounting plate using screws. It is typically used in industrial control panels, switchboards, and motor control centers. It is not compatible with I-Line plug-on panelboards.

Yes. Square D PowerPacT H-frame thermal-magnetic breakers like the HJL36020 are suitable for reverse-fed applications.

In the PowerPacT nomenclature, the L indicates the mounting and connection type. It signifies a unit-mount breaker with lugs on both the line and load sides. The H denotes the frame size, and the J denotes the interrupting rating.

No. This breaker features a fixed thermal and fixed magnetic trip unit. It provides Long-Time and Instantaneous (LI) protection but does not have adjustable dials for the trip settings.

No. The HJL36020 has an LI (Long-Time, Instantaneous) trip function. It does not include the G (Ground Fault) function. If ground fault protection is required, a different trip unit or an external equipment protection module is necessary.

The difference is the interrupting rating. The HJL36020 has a J rating (65kA at 480V). The HDL36020 has a D rating (18kA at 480V), and the HGL36020 has a G rating (35kA at 480V). All three share the same physical dimensions and unit-mount design.

Always refer to the breaker faceplate or instruction bulletin for exact torque specs, as they vary by wire size. Standard lugs typically require 44 lb-in (5 N.m) for 14 to 10 AWG wire, and up to 124 lb-in (14 N.m) for larger conductors like 8 to 3/0 AWG.