Eaton 37MM140HR1240 Commercial Meter Stack - UL Listed
Part Number: 37MM140HR1240
Quick Summary
The Eaton commercial meter stack is a modular three-phase metering solution designed for precise power monitoring in commercial and light-industrial applications. This unit addresses common installation pain points, including space constraints, complex wiring, and downtime during servicing. UL Listed safety certification reinforces critical electrical standards compliance, while factory A-B phase balance helps ensure accurate phase alignment during configuration. With a 400A amperage rating and a 1200A aluminum bus, the meter stack offers robust performance and efficient energy management, aligning with metering product line strategies and low-voltage distribution needs for modern facilities.
Product Information
Extended Description
37MM140HR1240 Eaton: Eaton's 37MM Three-Phase Commercial Meter Stack Modules, 400A, Aluminum Bus 1200 Ampere, Lever bypass, Seven-jaws, 1 Socket, Three-phase in, three-phase out, Factory A-B Phase Balance, Ringless Security , 400 Ampere Socket Ampere, 208Y/120V
Product Name
Eaton commercial meter stack
Catalog Number
37MM140HR1240
UPC
782113935379
Product Length/Depth
8.75 in
Product Height
52.63 in
Product Width
18.25 in
Product Weight
177 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
Bus material
Aluminum
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 - 37MM140HR1240
Feature: 400A amperage rating with a 1200A aluminum bus and seven-jaw socket. Business Impact: Enables handling high load scenarios with minimal voltage drop, improving reliability in peak demand conditions. Application: Ideal for three-phase commercial metering and distribution in busy facilities. Feature: Lever bypass with ringless security and one meter socket. Business Impact: Simplifies service disconnects while reducing tamper risk and downtime during maintenance. Application: Critical for field servicing and secure, compliant installations in commercial spaces. Feature: UL Listed certification. Business Impact: Provides recognized safety compliance, reducing project risk and accelerating approvals with regulators and utilities. Application: Suitable for regulated electrical installations and metering projects across markets. Feature: Aluminum bus material and compact footprint (8.75 in depth, 18.25 in width, 52.63 in height, 177 lb). Business Impact: Durable, weather-resistant construction with predictable mounting footprint, enabling smoother integration into existing enclosures and spaces. Application: Retrofit and new-build metering installations in restricted spaces. Feature: Three-phase in/out with 208Y/120V output. Business Impact: Streamlines wiring topology, lowers installation time, and improves compatibility with building distribution systems. Application: Building automation sites and commercial electrical rooms requiring reliable secondary distribution.
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FAQs
The unit is rated for 400A metering with a 1200A aluminum bus and uses a seven-jaw socket, designed for three-phase in/out and 208Y/120V output to support heavy commercial loads.
Yes, it is UL Listed. This certifies adherence to widely recognized safety standards, reducing regulatory risk and smoothing utility approvals during deployment in commercial metering projects.
It features one meter socket with three-phase in and three-phase out, configured for 208Y/120V operation to integrate with standard low-voltage distribution in buildings.
Yes. The design targets commercial metering and light-industrial applications, offering rugged aluminum bus construction and safe, efficient phase-balanced metering for diverse facilities.
Plan for a footprint of 52.63 in height, 18.25 in width, and 8.75 in depth; unit weighs about 177 lb and uses aluminum bus material for durable, space-efficient installation in active electrical rooms.