Eaton PRL4X3890B00C2S Pow-R-Xpress Panelboard - UL 67
Part Number: PRL4X3890B00C2S
Quick Summary
The Eaton Pow-R-Xpress PRL4X3890B00C2S panelboard is a high-capacity power distribution solution for commercial and industrial electrical rooms. Engineers often battle space constraints and downtime when upgrading feeders and load centers. This interior assembly is UL 67 certified for safety in commercial and industrial environments, supporting 480/277V three-phase service. With a robust 800A rating and copper bus, it minimizes resistance losses while delivering reliable power to critical equipment. Its dimensions—68.75 in L, 22 in W, 8 in H—facilitate retrofit into constrained rooms and align with the Pow-R-Xpress family for faster stocking and service. Coupled with Eaton's support ecosystem, the solution helps shorten project timelines and improve total cost of ownership.
Product Information
Extended Description
PRL4X3890B00C2S Eaton: EATON POW-R-XPRESS PRL4X INTERIOR ASSY; 480/277V 3P 4W 800A CUAG BUS SE
Product Name
Eaton Pow-R-Xpress PRL4X panelboard
Catalog Number
PRL4X3890B00C2S
UPC
786689814557
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
Eaton's Pow-R-Xpress stocking program
Eaton's Pow-R-Xpress stocking program
Eaton's Pow-R-Xpress stocking program
Pow-R-Line Xpert family overview
Feature: 800A amperage rating with copper bus and three-phase design. Business impact: minimizes voltage drop and heat, enabling compact feeders and longer service intervals. Application: ideal for mid-to-large industrial loads in manufacturing plants and distribution centers. Feature: 480/277V input with top-feed configuration. Business impact: simplifies integration with standard commercial electrical infrastructure, reducing wiring complexity and commissioning time. Application: control panels and machine-distribution networks in commercial facilities. Feature: UL 67 certification for interior panelboards. Business impact: ensures safety and regulatory compliance across projects, reducing risk during inspections. Application: North American facilities with stringent safety standards. Feature: Large interior footprint (68.75 in L × 22 in W × 8 in H) weighing 200 lb. Business impact: stable mounting and robust mechanical support, enabling reliable service in retrofit projects. Application: expansion or replacement in space-constrained electrical rooms. Feature: Top-feed, copper bus, three-phase, four-wire design. Business impact: high conductivity and dependable power distribution for critical loads. Application: industrial automation lines and data-intensive commercial infrastructure. Feature: Pow-R-Xpress ecosystem compatibility and stocking program reference. Business impact: faster procurement, reduced lead times, and streamlined project planning. Application: ongoing maintenance and future expansions in facility-wide power distribution.
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FAQs
Installation starts with confirming panel enclosure compatibility and loading the interior assembly into a compliant cabinet. Connect the top-fed copper bus, align spaces for 800A capacity, and secure all terminations per UL 67 guidelines. Ensure proper clearances and verify voltage ratings before energizing. Use manufacturer wiring diagrams and torque specs for safe commissioning.
The panelboard provides an 800A amperage rating, operates at 480/277V in a three-phase, four-wire configuration, and uses copper bus for high conductivity. This combination minimizes voltage drop, reduces heat buildup, and supports large loads with reliable fault response. The interior design simplifies wiring and maintenance while maintaining UL 67 safety compliance.
Yes, its 800A capacity, 480/277V three-phase operation, copper bus, and top-feed configuration make it well-suited for data centers, manufacturing floors, and other heavy-load environments. The interior assembly supports scalable expansion within the Pow-R-Xpress family, helping facilities manage growth without extensive panel revamps or downtime.
UL 67 is the primary certification listed for this interior panelboard, indicating compliance with safety and performance standards for electrical distribution equipment. Certification ensures adherence to recognized industry safety practices, reduces inspection risk, and supports regulatory alignment in North American facilities. Always verify site-specific requirements and regional standards during procurement.
Maintenance considerations focus on routine inspection of bus connections, enclosure integrity, and thermal performance under load. The Pow-R-Xpress ecosystem supports faster stocking and access to compatible accessories, reducing downtime during upgrades and expansions. Over the life cycle, the robust copper bus and UL-listed interior design contribute to lower replacement frequency and predictable total cost of ownership.