Eaton 37MM240R1240C54 Commercial Meter Stack - UL Listed
Part Number: 37MM240R1240C54
Quick Summary
Eaton 37MM240R1240C54 is a plug-in socket meter stack for 3-phase commercial power metering. Engineers often struggle with slow installation, limited phase balance options, and difficult wiring when expanding or upgrading metering in crowded panels. This unit carries UL Listed safety certification and supports 208Y/120V networks with a copper bus, enabling reliable protection and accurate measurement. The design emphasizes quick commissioning, a balanced load path, and straightforward integration with existing Eaton metering products. For facilities aiming to improve reliability, reduce downtime, and simplify maintenance, this meter stack delivers clear business value while aligning with standard industrial practices.
Product Information
Extended Description
37MM240R1240C54 Eaton: Eaton commercial meter stack, 37MM-3-Phase, 400A, Copper Bus, K-frame (1) 350A and (1) 400A breaker installed, 400A socket, 208Y/120V, Ringless, Al 1200A bus, Lever bypass, Seven-jaws, 2 sockets, Factory A-B phase balance
Product Name
Eaton 35MM commercial meter stack
Catalog Number
37MM240R1240C54
UPC
786689213282
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 - 37MM240R1240C54
Feature: Plug-in socket, copper bus, K-frame design → Business Impact: Reduces field wiring, speeds installation, improves reliability; Application: Ideal for 3-phase commercial metering in new builds and retrofits. Feature: 400A service with (1) 350A and (1) 400A breaker, 400A socket, ringless, seven-jaws → Business Impact: Supports heavy load distribution and selective coordination, lowering future upgrade costs; Application: Industrial facilities and data centers needing scalable metering. Feature: Two sockets and lever bypass → Business Impact: Flexible topology and streamlined maintenance without power downtime; Application: Utility-grade meter stacks in mixed-use facilities. Feature: Exit options top, bottom, or back; rainproof hub for outdoor use → Business Impact: Installation flexibility reduces enclosure footprint and enhances outdoor reliability; Application: Outdoor switchgear rooms and exterior panels. Feature: 208Y/120V network metering and UL Listed certification → Business Impact: Compliance with safety standards and compatibility with common panel systems; Application: Commercial and light-industrial buildings seeking proven metering compliance and ease of integration.
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FAQs
This meter stack supports main tenant feeders exiting from the top, bottom, or back, and, for outdoor installations, can be outfitted with a rainproof cap. This flexibility reduces enclosure footprint and simplifies routing in tight electrical rooms, making retrofits and new builds more practical.
Key specs include 400A service with one 350A and one 400A breaker installed, a 400A socket, copper bus, ringless design, 208Y/120V network metering, and UL Listed certification. The unit is designed for 3-phase, 4-wire metering and supports two sockets for expanded capacity.
Yes. The meter stack is configured for 208Y/120V metering and includes factory A-B phase balance features, aiding accurate measurement and balanced distribution across phases in commercial installations.
UL Listed certification confirms adherence to recognized safety and performance standards, helping meet regulatory requirements and simplifying audits. It also provides assurance for ongoing maintenance and compatibility within standard electrical panels.
The plug-in socket design, copper bus, and flexible exit options reduce installation time and wiring complexity, improve metering accuracy, and support scalable upgrades. These factors translate to lower downtime, faster project lead times, and clearer ROI for utilities, data centers, and industrial facilities.