Eaton BR1224L400R Main Lug Loadcenter - NEMA 3R
Part Number: BR1224L400R
Quick Summary
Eaton BR1224L400R main lug loadcenter is a reliable 400 A power distribution solution for industrial and light commercial panels. Tight spaces, harsh environments, and downtime pressure challenge panel upgrades; this enclosure simplifies installation and ongoing maintenance. UL 50 and UL 67 certifications, along with a NEMA 3R rating, support regulatory compliance and field reliability. Coupled with aluminum bus, surface mounting, and 120/240 V operation, it delivers scalable power distribution with lower total cost of ownership. For engineers and procurement teams, this unit combines rugged performance with straightforward installation, helping reduce project risk while increasing panel flexibility and serviceability.
Product Information
Extended Description
BR1224L400R Eaton: Eaton BR main lug loadcenter, 400 A,42,Aluminum, NEMA 3R,Surface,NEMA 3R,42 Circuits,24-pole,12 Spaces,3-wire,Single-phase,Type BR 1-inch breakers,120/240V,(2) #3/0–400 kcmil
Product Name
Eaton BR main lug loadcenter
Catalog Number
BR1224L400R
UPC
786685895420
Product Length/Depth
6.38 in
Product Height
38 in
Product Width
16.31 in
Product Weight
49 lb
Warranty
10 year limited
Certifications
UL 50 UL 67
Type
Main lug
Amperage Rating
400 A
Bus material
Aluminum
Cover
Cover included
Mounting
Surface
Number of circuits
42
Number of spaces
12
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 - BR1224L400R
Eaton type BR circuit breaker limited warranty June 2024
Feature: 400 A amperage rating with 42 circuits and 12 spaces. Business Impact: Supports large-load distribution in a compact footprint, enabling denser panels without sacrificing accessibility or future expansion. Application: Ideal for light industrial and commercial control centers where space is at a premium. Feature: Aluminum bus material. Business Impact: Reduces weight and improves corrosion resistance, lowering installation and lifecycle costs. Application: Suitable for indoor and sheltered outdoor enclosures where vibration and humidity are factors. Feature: Surface mounting in a NEMA 3R enclosure. Business Impact: Simplifies retrofit and new installations with easy surface mounting and protection against weather exposure. Application: Outdoor-rated assemblies and utility rooms requiring robust enclosure protection. Feature: Compatibility with BR 1-inch breakers. Business Impact: Streamlines replacement and upgrades, minimizing downtime during maintenance windows. Application: Electrical rooms and control panels that rely on BR-series protection. Feature: UL 50, UL 67 certifications and 10-year warranty. Business Impact: Enhances compliance and guarantees long-term support, reducing risk of warranty gaps. Application: Projects with strict certification requirements and long-term service plans.
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FAQs
The BR1224L400R is a BR-series main lug loadcenter designed for surface mounting in NEMA 3R environments. It accepts Type BR 1-inch breakers and supports 120/240 V single-phase services. Plan for (2) #3/0–400 kcmil conductors on the main lugs, ensure proper clearance for 42 branch circuits, and verify UL 50/UL 67 compliance requirements in your panel assembly.
Key performance specs include a 400 A amperage rating, 25 kAIC interrupt rating, aluminum bus material, 120/240 V operation, and a 42-circuit capacity across 12 spaces. The enclosure is NEMA 3R rated for weather resistance, and UL 50/UL 67 certifications reinforce compliance and long-term reliability in harsh environments.
Yes. With a NEMA 3R enclosure rating, the BR1224L400R is designed for outdoor and semi-outdoor locations where weather exposure is a consideration. The aluminum bus and rugged construction further enhance durability in challenging environments, reducing maintenance and replacement risk.
This unit carries UL 50 and UL 67 certifications and a NEMA 3R enclosure rating. These certifications support code compliance for power distribution equipment and ensure safe operation in both indoor and protected outdoor installations.
The BR1224L400R includes a 10-year limited warranty, providing long-term protection against manufacturing defects and reliability concerns. This, combined with BR-series compatibility and solid installation support, helps reduce maintenance costs and extends the asset life of your electrical distribution system.