Eaton 3BR4242LC400R Main Lug Loadcenter - UL 67
Part Number: 3BR4242LC400R
Quick Summary
The Eaton 3BR4242LC400R main lug loadcenter is a reliable power-distribution solution for 42-circuit panels in commercial and light-industrial applications. Engineers often confront wiring complexity and limited surge protection; this unit simplifies installation with a copper bus, surface-mount design, and factory integrated surge. It carries key certifications to support compliance and maintenance: UL Listed (file E52977, UL 67), plus a NEMA 3R enclosure for durable indoor or outdoor service. The three-phase, 400 A rating and 42 spaces enable scalable, safe distribution while reducing footprint and labor. This combination delivers improved uptime, easier service, and lower total cost of ownership for panel builders and end users.
Product Information
Extended Description
3BR4242LC400R Eaton: Eaton BR main lug loadcenter,Main lug,400 A,Copper,NEMA 3R,Surface,NEMA 3R,42 Circuits,42 Spaces,Factory integrated surge, No feed thru lugs,Three-phase
Product Name
Eaton BR main lug loadcenter
Catalog Number
3BR4242LC400R
UPC
786685895505
Product Length/Depth
56.75 in
Product Height
7 in
Product Width
18.75 in
Product Weight
78 lb
Warranty
10 year limited
Certifications
UL Listed file E52977 UL 67
Type
Main lug
Amperage Rating
400 A
Bus material
Copper
Mounting
Surface
Number of circuits
42
Number of spaces
42
Options
Factory integrated surge, No feed thru lugs
Phase
Three-phase
Enclosure
NEMA 3R
NEMA rating
NEMA 3R
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - 3BR4242LC400R
Eaton type BR circuit breaker limited warranty June 2024
Feature: 400 A main lug with copper bus enables high-capacity distribution and low-resistance power flow. Business Impact: Improves reliability for motor-driven loads and critical equipment, reducing voltage drop and voltage-related faults. Application: Industrial conveyors, pumps, and processing lines require steady three-phase power with minimal loss. Feature: 42 circuits and 42 spaces allow scalable panel design without mid-project hardware changes. Business Impact: Supports future expansion plans, lowers retrofit costs, and streamlines procurement. Application: Manufacturing cells and warehouse environments where future line additions are common. Feature: Surface mounting enclosure in a NEMA 3R rated housing delivers durable indoor-outdoor performance. Business Impact: Eliminates enclosure relocation costs and enables safer outdoor installations, reducing downtime. Application: Exterior equipment rooms and protected outdoor enclosures. Feature: Factory integrated surge protection and notching of lugs (no feed-thru lugs) simplify wiring and protection. Business Impact: Fewer field install steps, faster commissioning, and enhanced transient protection for sensitive drives. Application: Control panels with drives, PLCs, and sensors. Feature: Three-phase design with UL listed certification and a 10-year limited warranty ensures compliance and long-term service. Business Impact: Reduces regulatory risk and maintenance costs while boosting client confidence. Application: Regulatory environments and service contracts for industrial facilities. Feature: 56.75 in L, 7 in H, 18.75 in W dimensions and 78 lb weight provide a stable footprint for panel layouts. Business Impact: Predictable installation planning and transportation logistics. Application: Mid-size commercial electrical rooms and panel installations where space planning matters.
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FAQs
The Eaton 3BR4242LC400R is a main lug loadcenter designed for three-phase power with copper bus bars and a 42-space configuration. It fits standard BR-series panels requiring a main-lug, surface-mounted enclosure and is compatible with 400 A service feeders. Use in commercial or light-industrial applications where a robust, scalable distribution panel is required.
Key specs include 400 A amperage rating, 42 circuits and 42 spaces, copper bus material, surface mounting, NEMA 3R enclosure, three-phase configuration, 56.75 in length, 7 in height, 18.75 in width, and a 78 lb weight. It is UL Listed (E52977) and UL 67 certified with factory integrated surge protection.
Yes. The unit is housed in a NEMA 3R enclosure, designed for indoor or outdoor service, and UL Listed for outdoor reliability. Its rugged construction and integrated surge protection provide durable performance in exposed environments while meeting industry safety standards.
It is UL Listed (file E52977) and UL 67 certified, with a NEMA 3R enclosure rating. These certifications ensure electrical safety, compliance with electrical codes, and suitability for outdoor or harsh environments, reducing regulatory risk for facilities and machinery installers.
Benefits include reduced wiring complexity with factory integrated surge protection, fewer field modifications, and a longer service life due to durable enclosure and copper bus. The 10-year limited warranty further lowers lifecycle costs, while expanded 42-space capacity supports future line expansions without costly replacements.