Eaton PRL4X3890B18C2 PRL4X panelboard - UL 67
Part Number: PRL4X3890B18C2
Quick Summary
The Eaton Pow-R-Xpress PRL4X panelboard is a compact, high-capacity power distribution solution for industrial and commercial electrical rooms. Engineers often struggle with fit, wiring density, and long lead times when upgrading panelboards; this interior assembly is designed to streamline installation and enable scalable expansion. UL 67-listed for indoor service, it supports 480/277V three-phase systems with an 800A rating and copper bus, ensuring reliable, code-compliant operation. Its top-feed design and 68.75 inch length facilitate efficient wiring and mounting in tight spaces. By combining precise manufacturing with a straightforward installation path, it reduces field labor, accelerates project timelines, and lowers total cost of ownership for growing facilities.
Product Information
Extended Description
PRL4X3890B18C2 Eaton: EATON POW-R-XPRESS PRL4X INTERIOR ASSY; 480/277V 3P 4W 800A CUAG BUS 18CKT SUBCHS
Product Name
Eaton Pow-R-Xpress PRL4X panelboard
Catalog Number
PRL4X3890B18C2
UPC
786689814564
Product Length/Depth
68.75 in
Product Height
8 in
Product Width
22 in
Product Weight
200 lb
Certifications
UL 67
Bus material
Copper
Feed type
Top
Material
COPPER
Phase
Three-phase
Type
PRL4X INTERIOR
Amperage Rating
800A
Pow-R-Xpress quick selector reference guide
Pow-R-Xpress quick selector reference guide
Pow-R-Xpress quick selector reference guide
Pow-R-Line Xpert family overview
Feature: 800A amperage rating with 480/277V three-phase input and 18-circuit capacity. Business impact: supports high-load equipment and dense distribution, enabling fewer panels on the floor. Application: ideal for manufacturing lines and data centers with motors, drives, and multiple feeds. Feature: Top-feed copper bus and copper material. Business impact: lowers contact resistance and improves heat dissipation, increasing reliability and long-term performance. Application: critical power paths in industrial environments and commercial facilities with high transient loads. Feature: UL 67 listing for interior assemblies. Business impact: enhances safety compliance, simplifies inspection, and reduces rework during audits. Application: electrical rooms in facilities requiring UL-listed panel interiors. Feature: Large, purpose-built footprint (68.75 in L × 22 in W × 8 in H) and 200 lb weight. Business impact: predictable space planning and mounting in restricted environments; easier handling during installation. Application: retrofit projects and new builds in machine shops and manufacturing floors. Feature: 18‑circuit subpanel capability and 18CKT SUBCHS configuration. Business impact: scalable distribution that supports phased expansions without aggressive rework. Application: multi-destination feeder schemes in data centers and large offices.
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FAQs
The panelboard interior uses a top-feed configuration and a spacious 68.75 inch length with 22 inch width and 8 inch height, designed for straightforward field wiring. It supports an 800A capacity with 18 circuits and a copper bus, enabling clean cable runs and efficient installation in restricted electrical rooms.
It is rated for 480/277V, three-phase, four-wire systems with an 800A amperage rating. This combination supports heavy motor loads and distributed feeders while maintaining safety and reliability in commercial and industrial applications.
Yes. The 800A capacity, 18-circuit configuration, copper bus, and UL 67 listing make it well-suited for data centers, manufacturing lines, and other environments where robust, scalable power distribution is required without excessive panel counts.
This interior assembly is UL 67 listed, confirming compliance with safety standards for panel interiors in many commercial and industrial installations.
Benefits include faster installation due to the interior-specific design, reduced field wiring labor, and scalable capacity that supports phased expansions. The top-feed copper bus also contributes to lower resistance and improved reliability, delivering lower lifecycle costs over the equipment’s service life.