Eaton 37MM220R12C Commercial Meter Stack - UL Listed
Part Number: 37MM220R12C
Quick Summary
The Eaton 37MM220R12C commercial meter stack is a modular three‑phase metering solution for commercial buildings and light industrial facilities. Engineers often grapple with space constraints, wiring complexity, and phase balancing in meter enclosures, which can delay startups and raise costs. This model carries UL Listed certification and is supported by utility approvals across Ameren, MEG, and Xcel Energy, helping sites pass inspections and streamline commissioning. With a compact footprint and robust copper bus, it delivers reliable, scalable metering as demand grows. The design also supports precise A‑B phase balance and secure ringless operation, delivering predictable performance for power management and distribution programs while aligning with procurement criteria for commercial metering products.
Product Information
Extended Description
37MM220R12C Eaton: Eaton 37MM Three-Phase Commercial Meter Stack Modules, 225A, Copper Bus 1200 Ampere, Lever bypass Seven-jaws 2 Socket Three-phase in, three-phase out Factory A-B Phase Balance, Ringless Security , 225 Ampere Socket Ampere 208Y/120V
Product Name
Eaton commercial meter stack
Catalog Number
37MM220R12C
UPC
786685481005
Product Length/Depth
8.75 in
Product Height
52.63 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 FL : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) IN : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) KY : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) NC : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) OH : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) SC : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) CO : Xcel Energy MI : Xcel Energy MN : Xcel Energy ND : Xcel Energy NM : Xcel Energy SD : Xcel Energy TX : Xcel Energy WI : Xcel Energy
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 37MM220R12C
Feature: 225A input and 208Y/120V service with copper bus capable of supporting up to 1200A. Business Impact: Enables heavy commercial loads with headroom for future growth while minimizing voltage drop and ensuring accurate measurement. Application: suitable for mid-to-high demand commercial facilities and retail centers seeking reliable three‑phase metering. Feature: Lever bypass with seven-jaws 2 socket and ringless security. Business Impact: simplifies maintenance, reduces downtime during service changes, and enhances safety in restricted spaces. Application: utility metering closets and service entrances where rapid, safe bypass is advantageous. Feature: Factory A‑B Phase Balance and three‑phase in/out design. Business Impact: improves load balance and metering accuracy, supporting power quality and energy analytics. Application: data centers, offices, and manufacturing floors with diverse load profiles. Feature: UL Listed certification and multi‑state utility approvals (Ameren, MEG, Xcel Energy). Business Impact: streamlines compliance, reduces on‑site validation time, and accelerates project sign‑off. Application: regulatory environments and utility‑driven projects. Feature: Clear dimensional footprint—8.75 in depth, 52.63 in height, 18.25 in width; weight 98 lb. Business Impact: predictable fit in standard meter stacks, easier handling, and straightforward installation planning. Application: retrofit projects and new builds using common enclosure footprints.
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FAQs
Yes. The 37MM220R12C is designed for three‑phase commercial service with a copper bus and lever bypass. It fits standard meter stack configurations, supports 225A sockets, and is compatible with 208Y/120V service. Ensure enclosure space and clearance match the 8.75 in depth, 52.63 in height, and 18.25 in width to facilitate a smooth retrofit or new install.
Key specs include a 225A input rating, 208Y/120V output, copper bus with a 1200A bus capability, and three‑phase in/out. The assembly weighs 98 lb and has factory A‑B phase balance. These figures support load growth planning, energy analytics, and accurate metering for mid‑ to large‑sized commercial sites.
Ideal for commercial buildings, retail centers, and light industrial facilities that require reliable monitoring of three‑phase loads. The unit’s phase balance capability and secure ringless design help maintain power quality, while its compatibility with utility approvals supports smoother site acceptance and faster commissioning.
The device is UL Listed and carries multi‑state utility approvals, including Ameren, MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, OGE), and Xcel Energy. These certifications and approvals help with compliance, reduce on‑site validation time, and facilitate project sign‑off in regulated markets.
Maintenance benefits include a robust lever bypass for quick service changes and ringless security reducing wear on enclosure doors. The copper bus design supports low resistance and durable performance. Combined with UL listing and utility approvals, this translates to lower commissioning risk and a favorable total cost of ownership over the equipment lifecycle.