Square D I-Line HCJ Main Lugs ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,792.30
Square D I-Line HCJ Main Lugs Panelboard Interior with Aluminum Bus

Square D I-Line HCJ Main Lugs Panelboard Interior with Aluminum Bus

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Model: HCJ14486

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,792.30
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Square D I-Line HCJ Main Lugs Panelboard Interior with Aluminum Bus

The Square D™ I-Line HCJ Panelboard Interior is a main lugs power distribution panelboard interior with an aluminum bus, engineered for service entrance equipment or downstream distribution panels on AC or DC electrical systems. It is sized for HCJ enclosures measuring 32in W x 48in H x 9.5in D and provides 27in of circuit breaker space, rated 600VAC / 250VDC maximum and cULus Listed. This interior is available in Motor FLA ratings of 600A and 800A, so buyers can size the interior to their service and distribution requirements. Compatible circuit breaker frames include B-Frame, J-Frame, QO, Q-Frame, and H-Frame, giving contractors flexibility when specifying breakers for new construction or panel retrofits.

Key Features

  • Amp Rating Range: Available in 600A and 800A Motor FLA ratings to match project load requirements.
  • Enclosure Fit: Designed for HCJ enclosures measuring 32in W x 48in H x 9.5in D, providing 27in of usable circuit breaker space.
  • Aluminum Bus: Aluminum bus construction within a painted steel interior for efficient power distribution.
  • Main Lugs Configuration: Main lugs load center type for downstream distribution or service entrance applications.
  • Electrical Rating: 600VAC, 250VDC maximum for use on AC or DC systems.
  • Compatible Breaker Frames: Accepts B-Frame, J-Frame, QO, Q-Frame, and H-Frame circuit breakers.
  • Tightening Torque: 37.96 N.m for AWG 2/0...500 kcmil conductors.
  • Dead Front Trim: Dead front trim is easily installed for finished appearance and safety.
  • Factory Assembled: Factory assembled or ready to install for faster jobsite deployment.

Certifications & Compliance

  • cULus Listed
  • RoHS EU Compliant
  • Mercury Free
  • Toxic Heavy Metal Free

Technical Specifications

  • Material: Painted Steel Interior with Aluminum Bus
  • Product Or Component Type: Interiors
  • Country of Origin: United States
  • Toxic Heavy Metal Free: Yes
  • Mercury Free: Yes
  • ROHS Eur In Scope: Yes
  • Reach Free Of Svhc: Yes
  • With Recycled Cardboard: Yes
  • Returnability: Yes
  • Legacy WEEE Scope: In
  • WEEE Product Category: 5

Typical Applications

  • Service Entrance Equipment
  • Downstream Distribution Panels
  • Commercial and Industrial Power Distribution
  • AC or DC Electrical Systems
  • Panelboard and Load Center Wiring

Why Square D?

Square D I-Line panelboard interiors combine an aluminum bus with painted steel construction for reliable, code-compliant power distribution. Backed by cULus Listing and RoHS-compliant materials, this main lugs interior is factory assembled or ready to install, with an easily installed dead front trim for professional service entrance and distribution panel work across 600A and 800A ratings.

Manufacturer Resources

Product Specs

Product Type:
Panelboard Interior
Configuration:
Main Lugs
Voltage Rating:
600VAC / 250VDC
Listing:
cULus
Series:
I-Line
Country Of Origin:
United States
Product Material:
Aluminum
Department:
Electrical
Product Group:
Power Distribution
Amperage Rating:
600A - 800A
Product Subgroup:
Panelboards & Load Centers
Product Width:
26.44 in
Product Depth:
8.7 in

Square D HCJ14486 – Frequently Asked Questions

1) Which circuit breakers can I mount in a Square D HCJ I-Line interior?
It accepts B-Frame, J-Frame, QO, Q-Frame, and H-Frame Square D circuit breakers. That mix lets you run larger feeder frames and smaller branch breakers on the same interior, which is what makes it workable for both new construction and re-breakering an existing panel.
2) Is the Square D HCJ panelboard interior rated for 480V three-phase service?
Yes. The HCJ interior is rated 600VAC maximum, so 480Y/277V and 480V delta systems are inside its rating. It also carries a 250VDC maximum rating, so it can be used on DC distribution as well.
3) What amp ratings does the I-Line HCJ main lugs interior come in?
Two: 600A (part HCJ14486) and 800A (part HCJ32738), both Motor FLA ratings. Size the interior to the service or feeder ahead of it; there is no 400A or 1000A version in this group.
4) Main lugs or main breaker - which panelboard interior do I need?
The HCJ is a main lugs interior, meaning the bus is fed directly by lugs with no integral main device. Use it where overcurrent protection is already provided upstream, typically a downstream distribution panel or a service entrance arrangement where the main is ahead of the panel. If code or the drawing calls for a main disconnect in the panel itself, you need a main breaker interior instead.
5) What conductor size and torque do the main lugs on the HCJ interior take?
The main lugs are specified for AWG 2/0 through 500 kcmil conductors at a tightening torque of 37.96 N.m. Set a torque wrench to that value on termination; feeder terminations on a 600A or 800A bus are the ones inspectors check.
6) Is the Eaton Pow-R-Xpress PRL2X interior a direct substitute for the Square D I-Line HCJ main lugs interior?
They are not interchangeable interiors. The Square D I-Line HCJ interior is a main lugs panelboard interior with an aluminum bus rated 600VAC / 250VDC, built to drop into HCJ enclosures measuring 32in W x 48in H x 9.5in D and accepting B-Frame, J-Frame, QO, Q-Frame and H-Frame breakers. The Eaton Pow-R-Xpress PRL2X is an unassembled interior panelboard configured for three-phase 480Y/277V service in Eaton's own enclosure and breaker ecosystem. Because a panelboard interior is matched to its box and its breaker frames, a PRL2X will not mount in or breaker up as an I-Line HCJ interior. Substitute at the panel level, not the interior level.
7) I need a DC-rated panelboard interior. Do the Eaton Pow-R-Xpress interiors cover that?
For DC service, the Square D I-Line HCJ main lugs interior is the one that carries a DC rating: 600VAC / 250VDC maximum, which is why it is specified for AC or DC electrical systems. The Eaton Pow-R-Xpress PRL1X is a configurable interior panelboard and the PRL2X is an unassembled interior configured for three-phase 480Y/277V, both AC distribution designs. If the system is 250VDC or below on the DC side, the I-Line HCJ interior in 600A or 800A is the appropriate selection.
8) Is the Square D HCJ interior UL listed for use in commercial and institutional buildings?
It is cULus Listed, which covers both US and Canadian installation. The materials are also RoHS EU compliant, mercury free, and free of toxic heavy metals, and it is made in the United States, which matters on jobs with domestic-sourcing requirements.
9) Does an aluminum bus panelboard interior change how I terminate or specify?
The HCJ bus is aluminum, carried in a painted steel interior. The rating is unaffected at 600A or 800A, but torque the lugs to the stated 37.96 N.m and use terminations rated for the conductor you are landing. If a specification explicitly calls for copper bus, this interior will not meet it.
10) Does the HCJ interior include the dead front trim, or do I order that separately?
The HCJ is the interior itself, factory assembled and ready to install. Dead front trim installs easily onto it but is a separate item from the interior, as is the enclosure. Plan on ordering the HCJ enclosure and trim alongside the interior to make a complete panel.
11) What are the alternatives to a Square D I-Line interior from other manufacturers?
Eaton's Pow-R-Xpress line is the closest cross-brand equivalent we carry: the PRL1X Series configurable interior panelboard and the PRL2X unassembled interior panelboard, the latter specified three-phase 480Y/277V. Note that panelboard interiors are not interchangeable between manufacturers - an Eaton interior will not mount in a Square D HCJ enclosure, and Square D breaker frames will not seat on an Eaton bus. Switching brands means switching the whole panel.
12) Can I order an Eaton Pow-R-Xpress interior and field-fit it to an existing Square D I-Line HCJ enclosure?
No. The Square D I-Line HCJ interior is sized for HCJ enclosures at 32in W x 48in H x 9.5in D and lands on an aluminum bus that accepts B-Frame, J-Frame, QO, Q-Frame and H-Frame breakers. The Eaton Pow-R-Xpress PRL1X configurable interior and PRL2X unassembled interior are built on Eaton's own bus and mounting geometry. Mixing an interior into another manufacturer's enclosure voids the panel's cULus Listing. To keep an existing HCJ box, order the HCJ14486 600A or HCJ32738 800A interior.
13) What is the difference between the Square D I-Line HCJ interior and Eaton's Pow-R-Xpress PRL1X interior?
The Eaton Pow-R-Xpress PRL1X is a configurable interior panelboard, meaning the interior is built up to the configuration specified at order. The Square D I-Line HCJ is supplied as a main lugs interior with an aluminum bus, factory assembled and ready to install, in 600A or 800A Motor FLA ratings, rated 600VAC / 250VDC and cULus Listed. The HCJ also publishes its breaker frame compatibility up front: B-Frame, J-Frame, QO, Q-Frame and H-Frame. If you want an interior whose arrangement is selected during configuration, the PRL1X works that way; if you want a fixed main lugs interior matched to an HCJ box, the Square D unit is the straightforward pick.
How fast can I get the Square D HCJ14486 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Square D HCJ14486 come with a warranty?
Absolutely. The Square D HCJ14486 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Square D HCJ14486?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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