Eaton 1MM412RC Meter Stack - UL Listed Outdoor 125A
Part Number: 1MM412RC
Quick Summary
The Eaton 1MM412RC residential meter stack is an outdoor, single-phase metering solution designed for reliable residential service entrances. Engineers often wrestle with weatherproof enclosures, compatibility with chosen main breakers, and utility gatekeeping that can delay projects. This meter stack is UL Listed and built for outdoor installation, offering a durable enclosure and field-verified metering performance. With a 125A amperage rating, an 800A bus rating, and 120/240V operation, it supports common residential service needs while enabling simple integration with utility-approved metering layouts. The design also supports multiple metering configurations and is compatible with Eaton's broader family of metering products, delivering value for contractors and utilities alike. In short, it reduces risk while accelerating deployment of residential metering.
Product Information
Extended Description
1MM412RC Eaton: Eaton residential meter stack, Amperage rating: 125A, Bus rating: 800A, Outdoor, Interrupt rating depends on selected main circuit breaker, Single-phase in/single-phase out, Copper, 4 Sockets, Ring, 120/240 Vac
Product Name
Eaton residential meter stack
Catalog Number
1MM412RC
UPC
782114989920
Product Length/Depth
7.01 in
Product Height
48.5 in
Product Width
12.26 in
Product Weight
62 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
Type
Multiple metering
Utility approvals
ID : Idaho Power OR : Idaho Power WA : Seattle City Light AK : Anchorage Municipal Light & Power NV : NV Energy 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) WA : Puget Sound Energy WA : Tacoma Public Utilities NC : Dominion VA : Dominion
Interrupt rating
Depends on selected main circuit breaker
Enclosure
Outdoor
Bus Rating
800 A
Phase
Single-phase in, single-phase out
Voltage rating
120/240 V
Amperage Rating
125A
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM412RC
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: Outdoor meter stack features a 125A amperage rating and 800A bus rating, enabling robust service entry for residential loads while maintaining electrical efficiency and safety. This supports reliable energy distribution and reduces the risk of nuisance tripping during peak demand, making it ideal for single-phase residential metering with 120/240V supply. Application: ideal for residential service entrances and multi-tenant setups that require dependable metering with room for future expansion. Feature → Business Impact → Application: Outdoor enclosure provides weatherproof protection and corrosion resistance, minimizing maintenance and extending service life in exposed environments. This leads to lower lifecycle costs and fewer field calls for enclosure-related issues. Application: suitable for outdoor meter stacks at the building exterior, utility-supply entries, and remote locations where weather exposure is a concern. Feature → Business Impact → Application: Interrupt rating is configurable based on the selected main circuit breaker, delivering design flexibility and safety alignment with project requirements. This reduces over-specification while ensuring proper fault protection. Application: allows tailored protection for residential feeders and meets local code expectations. Feature → Business Impact → Application: Type: Multiple metering enables concurrent monitoring of distinct loads or tenants, supporting sub-metering strategies and energy management programs. This supports utility and building owner objectives to optimize consumption and bill accuracy. Application: multi-metering installations in residential complexes or mixed-use buildings. Feature → Business Impact → Application: Utility approvals section reflects compatibility across multiple utilities, streamlining permit approvals and reducing project lead times. This translates to faster commissioning and reduced scheduling risk for contractors. Application: deployments where utility acceptance is a gatekeeper, including Idaho Power, Seattle City Light, NV Energy, and others. Feature → Business Impact → Application: Compact dimensions (7.01 in depth, 12.26 in width, 48.5 in height) and 62 lb weight simplify installation planning and mounting in tight spaces, improving on-site efficiency. This reduces labor time and accelerates project timelines. Application: retrofit projects and new builds with constrained wall cavities or meter closets.
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FAQs
The 1MM412RC is designed for outdoor, single-phase residential service entrances with 120/240V supply, four sockets, and a copper construction. Its 125A amperage and 800A bus rating support typical residential loads, while its outdoor enclosure simplifies installation in exterior meter enclosures and shielded access points. It integrates with Eaton’s metering family and is utility-approved in many regions to streamline project approvals.
The interrupt rating is dependent on the main circuit breaker selected for the installation. This provides flexibility to meet local protection requirements while avoiding over-engineering. Refer to the Eaton Specification Sheet for 1MM412RC to align the main breaker rating with your service design and ensure proper coordination with downstream protection.
Yes. The unit is UL Listed, confirming safety compliance for outdoor metering. It also supports utility approvals as reflected by its listed utility compatibility, including several major utilities, which helps accelerate permit and acceptance processes during project commissioning.
Key specs include 125A amperage rating, 800A bus rating, 120/240V voltage, single-phase in/out, and four sockets. The enclosure is outdoor-rated, and the product is categorized as Multiple metering. These details inform service design, enclosure selection, and wiring strategies for reliable metropolitan or residential metering installations.
The product is covered by Eaton’s policy 25-000 warranty: one year from installation or eighteen months from shipment, whichever occurs first. This provides protection against manufacturing defects and ensures access to Eaton support resources for installation assistance and troubleshooting.