Eaton Three-Phase Commercial M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,663.73
$1,009.54
Eaton Meter Stack Three-Phase Commercial 225A Socket 1200A Bus Aluminum 7-Jaw Bypass 208Y/120V

Eaton Three-Phase Commercial Meter Stack 225A Socket 1200A Bus with 7-Jaw Bypass 208Y/120V

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Model: 37MM120R12

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

$1,663.73
$1,009.54
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Eaton Three-Phase Commercial Meter Stack 225A Socket 1200A Bus with 7-Jaw Bypass 208Y/120V

Professional Three-Phase Power Distribution & Metering Solution

The Eaton Three-Phase Commercial Meter Stack delivers reliable power distribution and metering for commercial applications with 225A socket capacity and 1200A bus rating. This aluminum construction unit features 7-jaw bypass configuration for 208Y/120V three-phase systems, providing professional-grade electrical distribution with UL Listed safety certification and utility approval for dependable service.

Professional Features & Benefits

  • 225A Socket Capacity: Accommodates standard commercial metering requirements with reliable socket connection for accurate power measurement.
  • 1200A Bus Rating: High-capacity aluminum bus system supports substantial electrical loads for commercial facility distribution.
  • 7-Jaw Bypass Configuration: Professional bypass design enables meter maintenance without service interruption to critical loads.
  • 208Y/120V Three-Phase: Standard commercial voltage configuration provides versatile power distribution for mixed lighting and equipment loads.
  • UL Listed Certification: Meets rigorous safety standards for commercial electrical installations and code compliance.
  • Aluminum Construction: Durable aluminum materials provide corrosion resistance and long-term reliability in commercial environments.
  • Utility Approved: Indiana Michigan Power approval ensures compatibility with local utility metering requirements and standards.

Technical Specifications

  • Certifications: UL Listed
  • Product Details: Commercial Meter Stack
  • Product Length Depth: 8.75 in
  • Product Width: 18.25 in
  • Utility Approvals: IN : Indiana Michigan Power (IMP) (AEP East)

Professional Applications

  • Commercial Office Buildings
  • Retail Establishments
  • Multi-Tenant Commercial Properties
  • Light Industrial Facilities
  • Professional Service Buildings
  • Mixed-Use Commercial Developments
  • Municipal and Institutional Buildings

Why Choose Eaton Quality?

Eaton delivers proven reliability in commercial electrical distribution with UL Listed safety certification and aluminum construction for long-term durability. With utility approval from Indiana Michigan Power and professional-grade 7-jaw bypass design, this meter stack provides the dependable performance commercial facilities require for critical power distribution applications.

Manufacturer Resources

Product Specs

Certifications:
UL Listed
Product Details:
Commercial Meter Stack
Product Length Depth:
8.75 in
Product Width:
18.25 in
Utility Approvals:
IN : Indiana Michigan Power (IMP) (AEP East)
Department:
Electrical
Product Group:
Meters and Sockets
Product Type:
Meter

Eaton 37MM120R12 – Frequently Asked Questions

1) Will an Eaton 37MM meter stack work on a 480V three-phase service?
No. The Eaton 37MM commercial meter stack is built for 208Y/120V three-phase, four-wire service, which is what the 7-jaw socket configuration corresponds to. A 480Y/277V building service needs a different stack entirely, so check the service voltage at the transformer or main before ordering.
2) How many tenants can I meter with the Eaton 37MM meter stack?
Socket count is the option you pick: 2, 3, or 4 sockets per stack section. Model 37MM120R12 carries 2, 37MM320R12 carries 3, and 37MM420R12 carries 4. Each socket is rated 225A, and all of them feed off a common 1200A bus, so a four-socket section covers four tenant services in one enclosure.
3) Can I add up the tenant loads on an Eaton 37MM stack, or does the bus limit me?
The bus is the ceiling. Each socket position is good for 225A, but every position hangs on the same 1200A aluminum bus, so total connected service through the stack cannot exceed the 1200A rating no matter how many 225A sockets you install. Four 225A sockets is 900A of socket capacity, well inside the bus. Size the service disconnect ahead of the stack to the 1200A bus.
4) Will the utility accept an Eaton 37MM meter stack?
It carries approval from Indiana Michigan Power (IMP), part of AEP East, and it is UL Listed. Utility approval is territory by territory, so the IMP listing is what gets it signed off in that service area. If you are outside AEP East, submit the model number to your serving utility for their approved-equipment check the same way you would for any socket.
5) What does the 7-jaw bypass on a commercial meter stack actually let me do?
It lets the meter come out without dropping the tenant. The bypass carries the load around the socket while the meter is pulled, so a utility tech or electrician can change or test a meter on an occupied unit with no outage to that tenant. On a multi-tenant building that is the difference between a routine meter swap and a scheduled shutdown notice.
6) How much wall depth do I need for an Eaton 37MM meter stack?
The stack measures 8.75 inches deep and 18.25 inches wide. Plan the depth against your working clearance in front of the equipment and, if it is going on a rated wall or in a corridor, against the projection allowed there. The 18.25 inch width is what governs how many sections you can gang along a given wall run.
7) Is one 225A socket enough for a commercial tenant space?
For most retail bays, offices, and light industrial suites on 208Y/120V, 225A per position covers the panel it feeds. Where a single tenant runs large HVAC or process equipment past that, they belong on their own service rather than a stack position, since 225A is the fixed socket rating here and cannot be uprated in the field.
8) Can I mix 2, 3, and 4 socket Eaton 37MM sections in one lineup?
Yes, and that is normally how a lineup gets built. All three configurations, 37MM120R12, 37MM320R12, and 37MM420R12, share the same 225A socket rating, 1200A bus, and 208Y/120V 7-jaw arrangement, so you combine section sizes to land on your exact tenant count instead of buying capacity you will not meter.
9) Is an aluminum bus meter stack alright for an outdoor or unconditioned install?
The 37MM stack is aluminum construction, which is the standard material for corrosion resistance on this class of gear. Aluminum bus does mean the terminations matter: use conductors and lugs rated for the aluminum connection and torque them to the marked value, then re-torque per the installation instructions. That is the single most common callback on aluminum-bus metering equipment.
How fast can I get the Eaton 37MM120R12 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 37MM120R12 come with a warranty?
Absolutely. The Eaton 37MM120R12 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 37MM120R12?
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
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