Built for industrial applications, the Square D HJL36015 is a 3-pole, 15A PowerPacT H-Frame MCCB. It provides dependable long-time and instantaneous (LI) thermal-magnetic trip functions for commercial systems. This unit-mount breaker installs into industrial control panels, switchboards, and motor control centers. It serves as a replacement for legacy FCL36015 breakers. Rated 65 kAIC at 480VAC, it offers robust current-limiting performance and features a Visi-Trip indicator.
The HJL36015 is a unit-mount circuit breaker designed for back-pan installation or DIN rail mounting. It features lugs on both the line and load sides. If you need the I-Line plug-on equivalent for a Square D switchboard, use catalog number HJA36015 instead.
What type of trip unit does the HJL36015 include?
This breaker features a basic thermal-magnetic trip unit with fixed long-time and instantaneous (LI) protection. The thermal and magnetic trip curve thresholds are set at the factory and cannot be adjusted in the field.
Can I install internal accessories in the HJL36015?
Yes, the PowerPacT H-frame platform allows for field-installable internal accessories. Components like shunt trips, undervoltage releases, and auxiliary contacts can be installed under the front accessory cover.
What wire sizes are accepted by the standard lugs?
The factory-installed standard lugs on this 15A frame accept either copper or aluminum conductors ranging from 14 AWG to 3/0 AWG. Always torque the terminal screws to the specifications printed on the breaker face.
Does the H-frame HJL36015 replace older Square D F-frame breakers?
Yes, PowerPacT H-frame breakers are commonly used to upgrade or replace legacy F-frame (such as FAL or FHL) circuit breakers. Because the physical footprint and mounting hole patterns differ slightly, you may need to update your mounting hardware or panel filler plates.
Is this breaker rated for DC systems?
Yes, the HJL36015 carries a direct current rating of up to 250VDC with a 20kAIC interrupting capacity. Ensure your wiring configuration conforms to the manufacturer's DC circuit installation requirements.
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