Eaton 3BR4242L400NY Main Lug Loadcenter - NEMA 1
Part Number: 3BR4242L400NY
Quick Summary
The Eaton 3BR4242L400NY main lug loadcenter is a scalable power distribution solution for three-phase panels in industrial facilities. Facility engineers often struggle with space constraints, code compliance, and future expansion in panel schedules. This unit is UL 67 and UL 50 certified, ships in a NEMA 1 galvanized enclosure, and features an aluminum bus for lighter builds. Designed for NY-approved installations, it pairs with 42 circuits and a 400 A rating to support reliable, scalable distribution while reducing overall footprint. Coupled with a cover included and a 10-year warranty, it delivers long-term maintenance predictability and lower lifecycle costs for critical facilities.
Product Information
Extended Description
3BR4242L400NY Eaton: Eaton BR main lug loadcenter,Approved for use in new york,Main lug,400 A,22,Aluminum,Cover included,NEMA 1,Galvanized steel,22 kAIC,DK,Combination,NEMA 1,42 Circuits,42 Spaces,Four-wire,Three-phase,208 Y/120, 240 V
Product Name
Eaton BR main lug loadcenter
Catalog Number
3BR4242L400NY
UPC
786676012881
Product Length/Depth
6.5 in
Product Height
66.5 in
Product Width
18.25 in
Product Weight
100 lb
Warranty
10 year
Certifications
UL 67 UL 50
Special features
Approved for use in new york
Type
Main lug
Amperage Rating
400 A
Bus material
Aluminum
Cover
Cover included
Main circuit breaker
DK
Mounting
Combination
Number of circuits
42
Number of spaces
42
Phase
Three-phase
Voltage rating
208Y/120, 240V
Box size
22
Enclosure
NEMA 1
Enclosure material
Galvanized steel
Interrupt rating
22 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 - 3BR4242L400NY
Eaton type BR circuit breaker limited warranty June 2024
Feature: 400 A main lug rating with 42 circuits/spaces. Business impact: Supports substantial load growth without needing a main breaker, enabling future expansions and simplified panel planning. Application: Industrial controls and mid-size commercial power distribution where space is limited. Feature: Aluminum bus material. Business impact: Lighter weight and easier handling during installation, reducing labor time and support requirements. Application: Indoor installations with restricted access or overhead mounting. Feature: NEMA 1 galvanized steel enclosure with cover included. Business impact: Enhanced indoor protection against dust and incidental contact, lowering field retrofit risk. Application: Non-hazardous environments in manufacturing, warehousing, and facilities management. Feature: 22 kAIC interrupt rating. Business impact: Robust short-circuit protection for higher fault current scenarios, improving reliability. Application: Equipment-intensive lines with demanding startup transients. Feature: Mounting as a combination enclosure. Business impact: Flexible integration with existing panels and future segregation or expansion, saving retrofit costs. Application: New builds and retrofits in data centers, facilities, and industrial plants. Feature: NY-approved and UL-certified configuration. Business impact: Regulatory compliance and expedited approval cycles with local authorities. Application: Projects in New York requiring verified standards conformance. Feature: Cover included and warranty of 10 years. Business impact: Immediate protection during install and long-term maintenance predictability. Application: End-to-end project planning for mission-critical facilities.
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FAQs
Key considerations include indoor mounting in a NEMA 1 enclosure, proper support for a heavy 100 lb unit, and correct alignment of conductors to the 42 circuit spaces. Ensure compliant wiring methods for three-phase 208Y/120 and 240 V systems, and verify NY approvals if required by local code. The included cover simplifies installation, while the combination mounting option supports flexible layout in constrained spaces.
The unit is a 400 A main lug loadcenter with 42 circuits/spaces for three-phase operation. It uses aluminum bus, provides 208Y/120 and 240 V ratings, has a 22 kAIC interrupt rating, and comes in a NEMA 1 galvanized steel enclosure with a cover included. Certifications include UL 67 and UL 50, and it is approved for use in New York.
Yes, the 3BR4242L400NY is approved for use in New York and carries UL certifications (UL 67, UL 50) essential for code compliance. When installing, ensure panel labeling matches the 400 A rating, confirm conductor sizing for 208Y/120 or 240 V, and document the NY approval in project records to streamline inspections and avoid rework.
The main lug design eliminates a main breaker, enabling feeder distribution to be organized via downstream breakers and simplifying panel expansion. This simplifies retrofits and future growth, especially in projects with evolving loads. For added protection, plan a compatible upstream main or subfeed arrangement and coordinate with breaker schedules for optimal protection coordination.
Included are the enclosure cover and mounting hardware, with supporting documentation such as the Eaton specification sheet and warranty. Access catalogs and the detailed datasheet for installation guidelines, clearance requirements, and electrical ratings to facilitate commissioning and ongoing maintenance.