Eaton 37MM Series Three-Phase ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,045.39
Eaton 37MM Series Three-Phase Commercial Meter Stack Module with Lever Bypass

Eaton 37MM Series Three-Phase Commercial Meter Stack Module with Lever Bypass

(No reviews yet) Write a Review

Model: 37MM220R12
$2,045.39

In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,045.39
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Eaton 37MM Series Three-Phase Commercial Meter Stack Module with Lever Bypass

The Eaton 37MM Series Commercial Meter Stack Module is engineered for multi-tenant commercial and multi-family metering applications, combining durable aluminum bus construction with an integrated lever bypass design for safe, code-compliant service disconnection during meter changes. Classified as a Commercial Meter Stack, this module carries UL Listed certification and is available across multiple amperage ratings, phase configurations, and utility-approved variations, including standard, copper bus, and NY Approved options, to suit a wide range of service requirements.

Key Features

  • Durable Construction: Aluminum bus construction provides reliable current-carrying capacity and long-term performance, with copper bus variants also available across the series.
  • Lever Bypass: Integrated lever bypass mechanism allows safe meter removal and replacement without interrupting downstream service.
  • Multi-Meter Stacking: Designed for commercial service, supporting multi-meter stacking arrangements.
  • Commercial Meter Stack Type: Purpose-built module type for grouped commercial metering setups.
  • Enclosure Compatibility: Sized to fit standard commercial meter bank enclosures.
  • Utility-Approved Variations: Offered in standard, Variant CX, and NY Approved configurations to meet local utility requirements.

Certifications & Compliance

  • UL Listed

Technical Specifications

  • Product Group: Wiring Devices
  • Type: Commercial Meter Stack
  • Bus Material: Aluminum or Copper (variant-dependent)
  • Certifications: UL Listed
  • 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.

Typical Applications

  • Multi-Tenant Commercial and Apartment Buildings
  • Commercial Electrical Service
  • Grouped Utility Metering Installations
  • Commercial Meter Bank Enclosures
  • New Construction and Retrofit Metering Projects

Why Eaton?

Eaton's 37MM Series Commercial Meter Stack Module is built with a durable aluminum (or copper) bus and a lever bypass mechanism for safe, efficient meter servicing, and it carries UL Listed certification. These quality indicators make it a reliable, code-compliant choice for commercial and multi-family metering applications where dependable performance across multiple amperage ratings and utility-approved configurations is required.

Manufacturer Resources

Product Specs

Product Type:
Meter Stack
Product Material:
Aluminum
Series:
37MM
Configuration:
Lever Bypass
Listing:
UL Listed
Department:
Electrical
Product Group:
Power Distribution
Product Subgroup:
Metering & Meter Sockets

Eaton 37MM220R12 – Frequently Asked Questions

1) What is the difference between the aluminum bus and copper bus versions of the Eaton 37MM meter stack module?
Bus material is the only thing that changes between them at 225A: the 37MM220R12 runs an aluminum bus, the 37MM220R12C is the copper bus build. Both are the same lever bypass module. Utilities and engineers on commercial services frequently spec copper bus by name in the service drawing, so check the utility's approved equipment list or the electrical spec before you default to aluminum. If nothing calls it out, aluminum is the standard build for the series.
2) Do I need the NY Approved version of the Eaton 37MM meter stack, or will the standard one pass?
If the job is in a New York utility territory that requires approved metering equipment, order the 37MM220R12NY. It is the aluminum bus 225A module in the NY Approved configuration. The standard 37MM220R12 is the same 225A aluminum bus module without that approval designation, and a utility that requires the approved variant will reject it at inspection. There is also a Variant CX build, the copper bus 37MM220R12CX, for utilities that call for that configuration. The utility, not the engineer, decides which one goes in, so pull the requirement off their approved equipment list before you order.
3) Can the meter be pulled on a 37MM module without killing power to the tenant?
That is what the lever bypass is for. The 37MM module has an integrated lever bypass mechanism, so a utility tech or electrician can shunt around the meter socket and swap the meter while downstream service to the tenant stays live. On a multi-tenant building this is the difference between a routine meter change and a scheduled outage notice to every unit on the riser.
4) Is a meter stack module the same thing as a single meter socket, and which do I need?
They are not interchangeable. A single meter socket is a standalone enclosure serving one service. The 37MM is a stack module, a building block that mounts into a commercial meter bank enclosure alongside other modules to create grouped metering for a multi-tenant building. If you are metering one tenant on one service, you want a socket. If you are feeding an apartment building, a strip mall, or any building where each tenant gets its own meter off a common bus, you want stack modules in a bank, and you order one module per meter position at the amperage that tenant's service requires.
5) I am adding tenant meters to an existing Eaton commercial meter bank. Can I add 37MM modules to it?
37MM modules are built to stack into standard commercial meter bank enclosures, so adding positions to an existing 37MM bank is the normal use case for both retrofit and new construction work. What you have to match is the amperage of the new tenant service (225A or 400A), the bus material your existing stack uses, and any utility approval variant the original bank was built to, such as NY Approved or Variant CX. Mixing a standard module into a bank the utility approved as NY is the mistake that gets caught at inspection.
6) What amperage ratings does the Eaton 37MM meter stack module come in?
Two ratings across the 37MM lever bypass modules: 225A and 400A. The 225A is where the bus material and utility approval choices live (37MM220R12 aluminum, 37MM220R12C copper, 37MM220R12CX Variant CX copper, 37MM220R12NY NY Approved aluminum). The 400A is the 37MM140R1240 in the standard configuration. Size the module to the tenant service it feeds, not to the total bank, since each module carries its own meter position.
7) What do I have to specify when ordering an Eaton 37MM meter stack module?
Three things decide the part number: amperage (225A or 400A), bus material (aluminum or copper), and utility approval (standard, Variant CX, or NY Approved). Get those from the service size on the drawing and the utility's approved equipment list. The 225A carries the full spread of choices; at 400A the module is the standard 37MM140R1240. Lever bypass is built into the series, so it is not a separate option to call out.
How fast can I get the Eaton 37MM220R12 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton 37MM220R12 come with a warranty?
Absolutely. The Eaton 37MM220R12 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton 37MM220R12?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Eaton 37MM220R12 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!