Eaton commercial meter stack 37MM140HR1240NY - UL Listed
Part Number: 37MM140HR1240NY
Quick Summary
Eaton commercial meter stack is a modular, high-capacity metering solution for three-phase industrial power distribution. Engineers often struggle with scalable metering layouts, limited space, and ensuring reliable phase balance across feeds. UL Listed and NY-approved, this unit meets stringent safety and local-code requirements while integrating with Landis and Gyr metering systems. By combining a compact footprint with robust bus, bypass options, and flexible cable entry, it supports efficient installation and future expansion, delivering cost-effective power monitoring for data centers, manufacturing lines, and large facilities. The design also aligns with 208Y/120V supply, 400A main and 400A socket configurations to streamline procurement and maintenance planning across sites.
Product Information
Extended Description
37MM140HR1240NY Eaton: 37MM-Three-Phase Commercial Meter Stack Modules, 400A, K-frame included secondary breaker, 400A socket, 208Y/120V, Ringless, Aluminum 1200A bus, Lever bypass, Seven-jaws, 1 socket, Factory A-B phase balance, NY approved, Landis and Gyr
Product Name
Eaton commercial meter stack
Catalog Number
37MM140HR1240NY
UPC
786685391625
Product Length/Depth
25 in
Product Height
9 in
Product Width
18 in
Product Weight
98 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Catalog Notes
Main tenant breakers can exit top, bottom or back. If being used in outdoor application and exiting the top, mount Myer type on rainproof cap. For use in New York
Bus Rating
1200 A
Number of jaws
Seven-jaw
Amperage Rating
400A
Number of meter socket
1
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 37MM140HR1240NY
Feature: The stack delivers a 400A amperage rating with a 1200A bus capacity. Business Impact: Enables a single, centralized metering module for sizable facilities, reducing cabinet clutter and improving overall energy visibility. Application: Ideal for three-phase commercial metering in data centers, large manufacturing floors, and high-load commercial buildings. Feature: One meter socket with a seven-jaw arrangement and a ringless bus design. Business Impact: Simplifies wiring, speeds up installation, and minimizes access-induced downtime. Application: Great for mid- to large-size electrical rooms requiring reliable meter access with reduced wiring complexity. Feature: Exit versatility forMain tenant breakers (top, bottom or back). Business Impact: Provides installation flexibility in constrained spaces and retrofits without reconfiguring feeders. Application: Retrofit projects and new builds where front-back access is limited. Feature: UL Listed and NY-approved certifications. Business Impact: Supports regulatory compliance and reduces approval cycles for local code adherence. Application: Essential for projects in New York and other jurisdictions prioritizing certified metering products. Feature: Outdoor-ready capability with rainproof cap guidance. Business Impact: Extends service life and minimizes weather-related maintenance for exterior installations. Application: Outdoor electrical rooms and utility enclosures exposed to the elements. Feature: Factory A-B phase balance and seven-jaw socket compatibility. Business Impact: Improves load balancing accuracy, reduces peak demand risk, and enhances energy management outcomes. Application: Industrial facilities seeking precise phase alignment for critical loads and metering accuracy.
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FAQs
The meter stack supports top, bottom, or back entry for main tenant breakers. This flexibility accommodates varied electrical room layouts, simplifies retrofits, and reduces wiring rework. Ensure clearance and access to the preferred exit path, and consult the catalog notes for outdoor rainproof cap requirements when top exits are used in exterior environments.
Key specs include a 400A amperage rating, 1200A bus, 1 meter socket with a seven-jaw configuration, 208Y/120V output, ringless bus design, and UL Listed with NY-approved status. The physical footprint is 25 in by 18 in by 9 in, with a weight of 98 lb, enabling compact, centralized metering for large facilities.
Yes, it is adaptable for outdoor use when top-entry configurations employ a rainproof cap as recommended in the catalog notes. This weatherproofing approach helps protect the main interior components while maintaining compliant metering in exterior enclosures.
The unit includes factory A-B phase balance and is UL Listed with NY approval, ensuring regulatory compliance and reliable phase alignment. These features support accurate energy measurement across phases, reduce neutral loading concerns, and improve overall distribution efficiency in large facilities.
The product carries Eaton’s standard warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. Regular maintenance should focus on ensuring clear access to the meter socket, verifying bypass operations, and inspecting entry points for moisture or debris, especially in outdoor installations.