Eaton 37MM240R124099 Commercial Meter Stack - UL Listed
Part Number: 37MM240R124099
Quick Summary
The Eaton 37MM240R124099 commercial meter stack is a plug-in socket system designed for three-phase metering. Engineers often grapple with wiring complexity, space constraints, and project delays when integrating metering, enclosure, and protection in a single solution. UL Listed safety certification is included, and the stack supports 208Y/120V networks as well as 120/240V single-phase systems. The integrated design reduces field wiring, speeds commissioning, and improves reliability for commercial power distribution projects. It also aligns with metering products and power management strategies, offering a scalable option for retrofit and new-build applications.
Product Information
Extended Description
37MM240R124099 Eaton: Eaton commercial meter stack, 37MM-3-Phase Module, 400A, K-frame included secondary breaker, (2) 200A breakers installed, 400A socket, 208Y/120V, Ringless, Al 1200A bus, Lever bypass, Seven-jaws, 2 sockets
Product Name
Eaton 35MM commercial meter stack
Catalog Number
37MM240R124099
UPC
786689213305
Product Length/Depth
66.625 in
Product Height
8.75 in
Product Width
19.375 in
Product Weight
320 lb
Certifications
UL Listed
Catalog Notes
Main tenant feeders can exit top, bottom, or back, If being used in outdoor application and exiting the top, mount Myer type hubs on rainproof cap. 120/240V, single-phase, three-wire systems and 208Y/120V network metering
Type
Plug-in socket
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 37MM240R124099
Feature: 400A, 3-Phase Module with K-frame secondary breaker. Business Impact: simplifies protection topology and reduces field assembly time, lowering labor costs. Application: ideal for large commercial services and energy metering in corporate facilities. Feature: Pre-installed (2) x 200A breakers. Business Impact: enables quick integration of common service configurations, reducing on-site labor and risks. Application: accelerates installation in retrofit or new-build metering stacks for office campuses and data centers. Feature: 400A socket and plug-in socket design. Business Impact: minimizes wiring complexity and enables faster, safer commissioning. Application: convenient for modular metering in commercial power distribution systems. Feature: 208Y/120V network metering with ringless aluminum 1200A bus. Business Impact: supports standard commercial voltages with low impedance paths, improving accuracy and protection coordination. Application: suitable for multi-branch metering in mid-to-large facilities. Feature: Lever bypass, seven-jaws, and two sockets. Business Impact: enhances maintenance safety and reduces downtime during service work. Application: reliable, service-friendly metering stacks in busy electrical rooms. Feature: Robust dimensions and weight (66.625 in L x 8.75 in H x 19.375 in W; 320 lb). Business Impact: substantiates rugged, long-term field reliability and vibration resistance. Application: ideal for mechanical room installations in commercial buildings.
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FAQs
The 37MM240R124099 is designed to support 208Y/120V networks in its 3-phase metering module, alongside 120/240V single-phase capabilities. This makes it suitable for commercial facilities that require flexible, multi-voltage metering solutions without altering the core distribution layout. Always verify bus configuration and breaker sizing per site requirements.
The unit measures 66.625 inches in length, 8.75 inches in height, and 19.375 inches in width, with a total weight of 320 pounds. These dimensions and mass reflect its rugged, field-ready construction and integrated protection components, which influence cabinet sizing and mounting clearances in commercial electrical rooms.
Catalog notes indicate main tenant feeders can exit top, bottom, or back, and for outdoor applications with top exit, Myer-type hubs should be mounted on a rainproof cap. This supports outdoor deployments when properly weatherproofed and aligned with the site’s enclosure strategy and rain protection requirements.
Lever bypass enables safe maintenance and testing without full power shutdown for all lines protected by the unit, improving uptime during servicing. This design supports quick isolation and re-energization, which is particularly valuable in busy facilities where meter servicing must minimize disruption.
The Eaton meter stack ships with components already wired for 400A service and two 200A breakers, reducing field wiring and labor time. This translates to faster commissioning, lower labor costs, and more predictable project timelines—benefits that improve overall ROI for retrofit or new-build metering projects in commercial properties.