Eaton 37MM140R12 Commercial Meter Stack - UL Listed
Part Number: 37MM140R12
Quick Summary
Eaton commercial meter stack is a modular metering solution that enables accurate, centralized power monitoring for three‑phase commercial and light‑industrial facilities. Facility teams often wrestle with wiring complexity, phase balance, and diverse utility requirements across sites, which can delay projects and inflate risk. UL Listed safety certification is standard, with utility approvals from Ameren, CenterPoint Energy and Dominion validating project readiness. By consolidating metering in a seven‑jaw stack with a 400A rating, it simplifies installation, reduces space requirements, and supports scalable power distribution. This solution also aligns with procurement and maintenance strategies by leveraging common Eaton metering products and long‑term reliability.
Product Information
Extended Description
37MM140R12 Eaton: Eaton commercial meter stack, 400A, Aluminum Bus 1200 Ampere, Seven-jaws, 1 Socket, 3-phase in, 3-phase out Factory A-B Phase Balance, 400 Ampere Socket Ampere, 208Y/120V
Product Name
Eaton commercial meter stack
Catalog Number
37MM140R12
UPC
786849052928
Product Length/Depth
8.75 in
Product Height
25.38 in
Product Width
18.25 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
Utility approvals
IL : Ameren MO : Ameren ME : Central Maine Power NC : Dominion VA : Dominion MD : Baltimore Gas and Electric TX : CenterPoint Energy (HL&P/Reliant)
Number of jaws
Seven-jaw
Amperage Rating
400A
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 37MM140R12
Feature: 400A rating with 3-phase in/out enables the meter stack to serve substantial commercial loads without oversizing. Business impact: reduces the number of devices in the service path, improves energy measurement accuracy under heavy load, and minimizes equipment diversification. Application: ideal for office campuses, retail centers, and small data centers that demand reliable, scalable metering. Paragraph 2: Feature: Seven-jaw design with a single socket simplifies wiring and maintenance. Business impact: fewer field connections reduce installation time and potential contact resistance, while improving safety and service continuity. Application: aligns with standard utility metering practices in new installations and retrofit projects. Paragraph 3: Feature: Aluminum bus construction lowers weight and provides robust conductivity. Business impact: easier handling during installation and reduced structural support requirements, with corrosion resistance for industrial environments. Application: suitable for both indoor and outdoor metering enclosures in commercial facilities. Paragraph 4: Feature: UL Listed certification plus comprehensive utility approvals (Ameren, CenterPoint, Dominion). Business impact: accelerates permitting, reduces third-party testing needs, and improves project timelines. Application: ideal for multi-utility interconnection projects and campuses with strict compliance requirements. Paragraph 5: Feature: Factory A‑B Phase Balance and 208Y/120V three‑phase service. Business impact: ensures accurate power measurement across phases, stable voltage distribution, and improved load balancing. Application: critical for metering in balanced feeders and distributed-generation scenarios. Paragraph 6: Feature: Warranty and support aligned with Eaton policy. Business impact: predictable service life, straightforward replacement, and minimized downtime. Application: procurement planning and service budgeting for facilities teams.
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FAQs
The 37MM140R12 uses a seven-jaw, single-socket configuration designed to fit standard commercial meter stack footprints. With its 8.75 in depth, 18.25 in width, and 25.38 in height, it integrates with common enclosure layouts while maintaining clear labeling and safe access for routine metering maintenance.
This model provides a 400A amperage rating with 3-phase in/out and a 208Y/120V voltage profile. The combination supports balanced three-phase service and accurate energy measurement across commercial and light-industrial applications.
Yes. It carries UL Listed safety certification and has listed utility approvals including Ameren (IL and MO), Central Maine Power (ME), Dominion (NC and VA), Baltimore Gas and Electric (MD), and CenterPoint Energy (TX), streamlining permitting and interconnection steps.
The product is UL Listed, ensuring compliance with safety standards for metering equipment. In addition, regional utility approvals validate readiness for site interconnection, reducing risk during deployment and accelerating project timelines.
Eaton’s policy provides a one-year warranty from installation or 18 months from shipment, whichever occurs first. This supports maintenance planning and helps minimize downtime in mission-critical facilities.