Eaton 3BR3L100R Main Lug Loadcenter - NEMA 3R
Part Number: 3BR3L100R
Quick Summary
The Eaton 3BR3L100R Main Lug Loadcenter is a compact 100 A three‑phase distribution unit for commercial panels. This main lug design reduces wiring complexity by eliminating feed-thru lugs, cutting installation time and minimizing wiring errors. UL 50 and UL 67 listings, along with a NEMA 3R enclosure, ensure dependable performance in indoor and outdoor environments. With BR 1‑inch breaker compatibility and a 10‑year warranty, it supports fast retrofits and lower lifecycle costs for panel upgrades and new builds.
Product Information
Extended Description
3BR3L100R Eaton: Eaton BR main lug loadcenter,No feed-thru lugs,Main lug,100 A,9R,Aluminum,Cover included,NEMA 3R,Metallic,10 kAIC,BR,3 Circuits,Three-pole,3 Spaces,Four-wire,Three-phase,Type BR 1-inch breakers,208 Y/120, 240 V,#14-1/0 AWG Cu/Al
Product Name
Eaton BR main lug loadcenter
Catalog Number
3BR3L100R
UPC
782114868294
Product Length/Depth
3.88 in
Product Height
39 in
Product Width
14.31 in
Product Weight
7.36 lb
Warranty
10 year
Certifications
UL 50 UL 67
Special features
No feed-thru lugs
Type
Main lug
Amperage Rating
100 A
Bus material
Aluminum
Cover
Cover included
Main circuit breaker
BR
Number of circuits
3
Number Of Poles
Three-pole
Number of spaces
3
Phase
Three-phase
Used with
Type BR 1-inch breakers
Voltage rating
208Y/120, 240V
Wire size
#14-1/0 AWG Cu/Al
Box size
9R
Enclosure
NEMA 3R
Enclosure material
Metallic
Interrupt rating
10 kAIC
Number of wires
4
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - 3BR3L100R
Eaton type BR circuit breaker limited warranty June 2024
Feature: 100 A main lug, three spaces, three-phase configuration. Business impact: Enables compact, scalable power distribution with straightforward expansion in growing facilities. Application: Ideal for commercial panels and light industrial service entrances where space is at a premium. Feature: No feed-thru lugs. Business impact: Reduces wiring complexity and potential miswiring, accelerating installation and reducing field errors. Application: Outdoor and indoor installations requiring quick, reliable wiring with BR breakers. Feature: Aluminum bus. Business impact: Lightweight yet durable conductors improve handling during installation and reduce operating exposure to corrosion. Application: Industrial environments with variable temperatures and exposure. Feature: NEMA 3R, metallic enclosure. Business impact: Weather-resistant protection for outdoor service panels, lowering maintenance costs. Application: Outdoor utility rooms, mechanical spaces, and manufacturing floors. Feature: Covered with BR 1‑inch breaker compatibility. Business impact: Streamlined sourcing and replacement, ensuring compatibility across existing panels. Application: Retrofit projects and facility upgrades. Feature: 208Y/120 or 240 V ratings and 4-wire capability. Business impact: Flexible wiring options support diverse electrical systems. Application: Commercial and light industrial equipment feeds. Feature: 10 kAIC interrupt rating. Business impact: Enhanced fault tolerance reduces downstream damage. Application: Critical load centers and process lines.
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FAQs
The 3BR3L100R is a 100 A, three‑phase main lug loadcenter designed for BR‑type, 1‑inch breakers. It uses #14‑1/0 AWG Cu/Al conductors and supports 208Y/120V or 240V systems with four wires. Installation should follow standard mil‑spec wiring practices: mount securely, connect phase and neutral appropriately, and attach the cover to maintain enclosure integrity. This reduces wiring errors and speeds commissioning in retrofit projects.
The loadcenter carries a 10 kAIC interrupt rating, providing strong fault current handling for typical commercial and light industrial feeders. It is enclosed in a NEMA 3R metallic enclosure, offering weather-resistant protection suitable for outdoor and harsh indoor environments. These ratings help ensure reliability and compliance in demanding service conditions.
Yes. The unit features a NEMA 3R metallic enclosure which is designed for outdoor and protected indoor environments. Its weather-resistant construction, along with UL 50 and UL 67 certifications, supports safe operation in exposed spaces. For outdoor installations, ensure proper mounting and sealing per local codes to maximize longevity.
The 3BR3L100R is UL listed under UL 50 and UL 67 standards and features a NEMA 3R enclosure. These certifications denote compliance for enclosure integrity, electrical integrity, and suitability for outdoor or harsh environments. This combination supports regulatory compliance for commercial and light industrial projects.
Eaton documents a 10‑year warranty for this loadcenter, reflecting confidence in long‑term reliability. Maintenance considerations include verifying conductor integrity, periodic inspection of enclosure seals in outdoor installs, and keeping the BR breakers in good working order. The no feed-thru lug design simplifies wiring changes, potentially reducing service time and downtime during maintenance or upgrades.