Eaton 3BR4242L225S Enclosures - UL 67 UL 50, 25 kAIC
Part Number: 3BR4242L225S
Quick Summary
Eaton BR main lug loadcenter provides reliable three-phase distribution for industrial facilities. This unit addresses common panel challenges such as limited lug configurations, space constraints, and costly retrofits by delivering a main-lug design with ample circuit capacity. It carries UL 67 and UL 50 listings, backed by a NEMA 1 metallic enclosure and a 25 kAIC interrupt rating to support rugged indoor service. The BR family compatibility ensures easy breaker substitutions and simplified maintenance, while the aluminum bus keeps weight down for quicker installation. With a 10-year warranty, this loadcenter helps reduce lifecycle costs and procurement risk for projects in manufacturing, data centers, and commercial facilities.
Product Information
Extended Description
3BR4242L225S Eaton: Eaton BR main lug loadcenter,No feed-thru lugs,Main lug,225 A,L1,Aluminum,Cover included,NEMA 1,Metallic,25 kAIC,BWH,Surface,NEMA 1,42 Circuits,42 Spaces,Four-wire,Three-phase,Type BR 1-inch breakers,208 Y/120, 240 V,#1 AWG-300 kcmil Cu/Al
Product Name
Eaton BR main lug loadcenter
Catalog Number
3BR4242L225S
UPC
786676442855
Product Length/Depth
3.88 in
Product Height
45 in
Product Width
14.31 in
Product Weight
36.1 lb
Warranty
10 year
Certifications
UL 67 UL 50
Special features
No feed-thru lugs
Type
Main lug
Amperage Rating
225 A
Bus material
Aluminum
Cover
Cover included
Main circuit breaker
BWH
Mounting
Surface
Number of circuits
42
Number of spaces
42
Phase
Three-phase
Used with
Type BR 1-inch breakers
Voltage rating
208Y/120, 240V
Wire size
#1 AWG-300 kcmil Cu/Al
Box size
L1
Enclosure
NEMA 1
Enclosure material
Metallic
Interrupt rating
25 kAIC
NEMA rating
NEMA 1
Number of wires
4
Residential and Light Commercial, Load centers and Circuit Breakers, Volume 1 Tab 1
Eaton Specification Sheet - 3BR4242L225S
Eaton type BR circuit breaker limited warranty June 2024
Feature: Main lug configuration with no feed-thru lugs → Business Impact: Simplifies wiring schemes and reduces upfront material costs; Application: Ideal for panel upgrades and retrofit projects where a main-lug distribution is sufficient. Feature: 225 A rating with 42 circuits and 42 spaces → Business Impact: High-capacity, scalable distribution that minimizes panel additions; Application: Large-machine rooms and multi-branch feeders in industrial facilities. Feature: Aluminum bus material → Business Impact: Lighter weight and easier handling during installation; Application: Roof, mezzanine, or tight-access installations. Feature: NEMA 1 metallic enclosure with cover included → Business Impact: Robust indoor protection and immediate field protection; Application: Service entrances, workshops, and controlled environments. Feature: Compatibility with Type BR 1-inch breakers → Business Impact: Ready availability of breakers and straightforward upgrades; Application: Standardized spare parts for ongoing maintenance. Feature: 25 kAIC interrupt rating and 208Y/120, 240 V rating → Business Impact: Enhanced fault handling and compatibility with common industrial loads; Application: Motors, lighting, and control panels in three-phase systems. Feature: Four-wire, surface mounting → Business Impact: Easy mounting and flexibility in layout; Application: Wall-mounted or surface-mounted distribution in constrained spaces. Feature: 10-year warranty and UL/NEMA certifications → Business Impact: Lower risk, stronger compliance, and longer asset life; Application: Public and regulated environments where documentation matters. Industry context: BR series panels are widely deployed in control rooms, machine shops, and facility distribution, offering predictable performance and spare-part availability for mid-market operations.
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FAQs
The installation procedure starts with a surface-mount chassis that accepts Type BR 1-inch breakers. Secure the panel to a sturdy wall, connect four wires (three phases and neutral/ground as applicable), and terminate feeders within the 225 A rating. Ensure proper enclosure grounding and verify that the 208Y/120 or 240 V supply matches your load requirements. The unit’s no feed-thru lug design simplifies wiring and reduces the risk of mis-wiring during retrofit projects.
Yes, this loadcenter is designed to be used with Type BR 1-inch breakers. This compatibility ensures easy sourcing of replacement breakers and available spare parts from Eaton, which helps minimize downtime during maintenance. With 42 spaces, you can plan for future expansion without replacing the entire panel, and the 25 kAIC rating supports reliable fault-current handling within standard industrial applications.
Indoor environments such as service entrances, workshops, control rooms, and manufacturing floors benefit most. The NEMA 1 metallic enclosure provides dust and incidental impact protection and works well with surface-mounted installations in controlled spaces. This enclosure is paired with a cover and a 10-year warranty to support long-term reliability in typical industrial settings.
The unit carries UL 67 and UL 50 listings, indicating suitability for low-voltage distribution and enclosures, along with a 25 kAIC interrupt rating for robust fault protection. It also meets NEMA 1 standards for indoor use. Together, these certifications support compliance in regulated facilities and simplify supplier qualification for project documentation.
Its 225 A rating, 42 circuits, and 42 spaces reduce the need for frequent panel additions, while compatibility with BR breakers streamlines spare parts management. The aluminum bus reduces weight during installation, and the 10-year warranty minimizes lifecycle risk. Collectively, these features translate into lower maintenance costs and faster, safer panel upgrades in mid-size industrial deployments.