Eaton BR4242L400R Main Lug Loadcenter - NEMA 3R Outdoor
Part Number: BR4242L400R
Quick Summary
Eaton BR4242L400R main lug loadcenter delivers reliable 400 A distribution for outdoor industrial panels. Engineers often struggle with weatherproofing, space planning, and staying compliant under evolving codes. UL 50, UL 67 listings and a NEMA 3R rating ensure safe outdoor operation and long service life in harsh environments. With an aluminum bus and a ready-to-install 42-space platform, this enclosure helps reduce footprint while improving uptime and maintenance predictability. Designed for surface mounting with a flush or NEMA 3R cover, it supports 208Y/120 or 240 V systems and scales to evolving facility needs, delivering business value through robust, code-compliant power distribution.
Product Information
Extended Description
BR4242L400R Eaton: Eaton Eaton BR main lug loadcenter,With flush or NEMA type 3R cover, Outdoor, 400 A,46,Aluminum,NEMA 3R,42 Circuits,42 Spaces,Four-wire,Three-phase,Type BR 1-inch breakers,208Y/120,240V,(1) 250–750 kcmil or (2) #3/0–250 kcmil
Product Name
Eaton BR main lug loadcenter
Catalog Number
BR4242L400R
UPC
786685924007
Product Length/Depth
6.38 in
Product Height
54 in
Product Width
16.31 in
Product Weight
67 lb
Warranty
10 year limited
Certifications
UL 50 UL 67
Type
Main lug
Amperage Rating
400 A
Bus material
Aluminum
Cover
Cover included
Main circuit breaker
MLO
Mounting
Surface
Number of circuits
42
Number of spaces
42
Phase
Single-phase
Enclosure
NEMA 1
Interrupt rating
25 kAIC
NEMA rating
NEMA 3R
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - BR4242L400R
Eaton type BR circuit breaker limited warranty June 2024
Feature: Outdoor main lug loadcenter with 400 A rating and 42 spaces. Benefit: Provides scalable power distribution for growing facilities while minimizing the need for early panel upgrades. Application: Suitable for outdoor motor control and general purpose distribution in harsh environments. Feature: Aluminum bus construction. Benefit: Reduces weight for easier handling and installation, while maintaining structural integrity under load. Application: Ideal for contractor installations and long-term service life in outdoor enclosures. Feature: NEMA 3R enclosure with flush or 3R cover option. Benefit: Delivers weather resistance and quick access, lowering enclosure maintenance costs and downtime. Application: Outdoor electrical rooms, weather-exposed locations, and perimeter equipment cabinets. Feature: 208Y/120 and 240 V suitability with four‑wire connections. Benefit: Supports common commercial and industrial power systems, enabling flexible wiring layouts and compatibility with standard equipment. Application: Facility distribution panels and service entrances requiring versatile voltages. Feature: UL 50 and UL 67 listings. Benefit: Ensures compliance with critical safety standards, reducing risk and streamlining regulatory approvals. Application: Projects requiring recognized certifications for panel enclosures and secondary distribution equipment. Feature: 42 circuits and 42 spaces, single‑phase configuration. Benefit: High-density layout supports complex circuits without expanding footprint; simplifies routing and labeling. Application: Large control panels and distributed load centers in manufacturing environments. Insight: This BR4242L400R model aligns with industry practice to consolidate outdoor distribution in a single robust enclosure, enabling faster field deployments and predictable maintenance cycles. The combination of surface mounting, 3R weather protection, and aluminum components reflects current best practices for reliable, code-compliant power distribution in industrial facilities.
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FAQs
Plan for surface mounting on a flat, accessible wall or equipment rack. Use the flush or NEMA 3R cover as required for weather protection, and ensure conductor sizing accommodates up to #3/0–250 kcmil or 250–750 kcmil as applicable. Connect to 208Y/120 or 240 V systems with a four‑wire configuration and verify local code compliance per UL 50 and UL 67 guidelines.
The BR4242L400R provides a 400 A amperage rating, 42 circuits and spaces, aluminum bus material, and an interrupt rating of 25 kAIC. It is designed for single‑phase service with 208Y/120 or 240 V, and ships with a flush or NEMA 3R cover. It is UL 50 and UL 67 listed, enhancing reliability and compliance in outdoor installations.
Yes. It is rated for outdoor use with a NEMA 3R enclosure and an optional flush or 3R cover, providing weather resistance and protection against environmental elements. The unit’s aluminum bus and compact 42‑space platform support durable, long-term outdoor service in industrial or commercial sites.
The loadcenter is UL 50 and UL 67 listed and features a NEMA 3R rating for outdoor reliability. These certifications verify enclosure integrity, electrical safety, and suitability for outdoor environments, helping ensure code compliance and regional approvals for industrial installations.
The 10‑year limited warranty and durable aluminum bus reduce lifecycle costs by lowering replacement frequency and maintenance labor. Its 42‑circuit density on a single outdoor enclosure minimizes panel sprawl, improving uptime. The NEMA 3R protection plus UL listings simplify compliance and procurement, delivering predictable long‑term costs for facilities with evolving power needs.