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Eaton Main Lug Loadcenter 100A Three-Pole Three-Phase NEMA 3R BR Series
Professional Three-Phase Power Distribution Equipment
The Eaton Main Lug Loadcenter delivers exceptional electrical power distribution performance for three-phase commercial and industrial applications. This 100A three-pole loadcenter provides reliable power distribution designed for professional electricians, electrical contractors, and facility managers, offering the proven reliability and advanced technology that professionals trust from the global leader in intelligent power management.
Professional Features & Benefits
Power Distribution Performance
- 100A Three-Pole Configuration - Provides robust three-phase power distribution capacity with 208Y/120V and 240V voltage compatibility for versatile commercial applications
- 10 kAIC Interrupt Rating - Delivers reliable fault current interruption capability ensuring electrical safety and system protection in demanding environments
- Three Circuits with Three Spaces - Accommodates Type BR 1-inch breakers for flexible circuit configuration and future expansion needs
- Aluminum Bus Construction - Features durable aluminum bus material providing excellent conductivity and corrosion resistance for long-term reliability
Weather Protection & Installation
- NEMA 3R Enclosure Rating - Metallic enclosure provides superior protection against rain, sleet, and ice formation for outdoor installations
- No Feed-Thru Lugs Design - Streamlined main lug configuration simplifies installation and reduces connection complexity for professional electricians
- Four-Wire Three-Phase System - Supports complete three-phase power distribution with neutral conductor for balanced loading applications
Technical Specifications
Amperage Rating: 100A, Voltage Rating: 208Y/120V and 240V, Number of Poles: Three-pole, Phase: Three-phase, Number of Circuits: 3, Number of Spaces: 3, Interrupt Rating: 10 kAIC, Enclosure: NEMA 3R, Enclosure Material: Metallic, Bus Material: Aluminum, Wire Size: #14-1/0 AWG Cu/Al, Number of Wires: 4, Main Circuit Breaker: BR Series, Used With: Type BR 1-inch breakers, Special Features: No feed-thru lugs, Cover: Included, Certifications: UL 50, Dimensions: 39" H x 14.31" W x 3.88" D, Weight: 7.36 lb
Installation & Usage
- Verify proper NEMA 3R mounting location with adequate clearances for outdoor or wet location installation
- Connect incoming three-phase power conductors to main lug terminals using #14-1/0 AWG copper or aluminum wire
- Install appropriate Type BR 1-inch circuit breakers in the three available spaces according to load requirements
- Connect branch circuit conductors ensuring proper phase balance across the three-phase system
- Verify all connections are tight and properly torqued according to manufacturer specifications
- Test system operation and verify proper three-phase voltage readings before energizing loads
Professional Applications
Ideal for:
- Commercial Power Distribution - Office buildings, retail facilities, and commercial establishments requiring three-phase power distribution
- Industrial Electrical Systems - Manufacturing facilities, warehouses, and industrial plants with three-phase motor loads
- Outdoor Electrical Installations - NEMA 3R rated enclosure perfect for exterior mounting and weather-exposed locations
- Three-Phase Motor Control Centers - Distribution panels feeding motor control equipment and three-phase machinery
- Commercial HVAC Systems - Power distribution for three-phase air conditioning, heating, and ventilation equipment
- Electrical Service Upgrades - Modernizing existing electrical systems with reliable three-phase power distribution capability
- Facility Power Management - Central distribution points for balanced three-phase loading in commercial and industrial facilities
- Equipment Power Feeds - Dedicated power distribution for three-phase equipment and specialized electrical loads
BR Series Advantage
The BR Series represents Eaton's commitment to reliable residential and light commercial power distribution, featuring proven thermal-magnetic circuit breaker technology, compact 1-inch breaker design for space efficiency, and comprehensive compatibility with Eaton's extensive BR breaker family for maximum flexibility in circuit protection applications.
Why Choose Eaton Quality?
With over a century of electrical power management innovation, Eaton delivers the reliability and performance that electrical professionals demand. Our UL 50 certified loadcenters provide the electrical safety standards and dependable operation trusted by electricians, electrical contractors, and facility managers worldwide, backed by comprehensive technical support and the industry's most extensive distribution network.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 100 A
- Box Size:
- 9R
- Bus Material:
- Aluminum
- Certifications:
- UL 50
- Enclosure:
- NEMA 3R
- Enclosure Material:
- Metallic
- Interrupt Rating:
- 10 kAIC
- Main Circuit Breaker:
- BR
- Number Of Circuits:
- 3
- Number Of Poles:
- Three-pole
- Number Of Spaces:
- 3
- Number Of Wires:
- 4
- Phase:
- Three-phase
- Product Height:
- 39 in
- Product Length Depth:
- 3.88 in
- Product Type:
- Main Lug Loadcenter
- Product Weight:
- 7.36 lb
- Product Width:
- 14.31 in
- Special Features:
- No feed-thru lugs
- Used With:
- Type BR 1-inch breakers
- Voltage Rating:
- 208Y/120, 240V
- Wire Size:
- #14-1/0 AWG Cu/Al
- Product Group:
- Electrical
- Cover Included:
- Yes
- Department:
- Electrical