Eaton 1MM512R Residential Meter Stack - UL Listed, 125A/800A
Part Number: 1MM512R
Quick Summary
Eaton 1MM512R Residential Meter Stack is a single-phase metering solution designed for reliable residential service applications. In many projects, space constraints and retrofit timelines complicate meter upgrades, making a compact, pre-wired stack essential. UL Listed certification and broad utility approvals support fast interconnection and code compliance, reducing risk for installers and owners. This model delivers a robust combination of performance, durability, and installation flexibility, aligning with residential metering needs while supporting future expansion and multi-tenant scenarios. The product supports 125A service with an 800A bus rating and is suitable for indoor/outdoor environments, making it a practical choice in modern power management and distribution strategies.
Product Information
Extended Description
1MM512R Eaton: Eaton residential meter stack, Amperage rating: 125A, Bus rating: 800A, Indoor/Outdoor, Interrupt rating depends on selected main circuit breaker, Single-phase in/single-phase out, 5 Sockets, Aluminum, Ring, 120/240 Vac
Product Name
Eaton residential meter stack
Catalog Number
1MM512R
UPC
786849051914
Product Length/Depth
7.01 in
Product Height
57.5 in
Product Width
12.26 in
Product Weight
70 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
DC : Atlantic City Electric / Delmarva (Connectiv) DE : Atlantic City Electric / Delmarva (Connectiv) MD : Atlantic City Electric / Delmarva (Connectiv) NJ : Atlantic City Electric / Delmarva (Connectiv) TX : CenterPoint Energy (HL&P/Reliant) NC : Dominion VA : Dominion MI : DTE Energy (Detroit Edison) NM : El Paso Electric TX : El Paso Electric AR : Entergy LA : Entergy MS : Entergy TX : Entergy ID : Idaho Power OR : Idaho Power WA : Seattle City Light AK : Anchorage Municipal Light & Power NV : NV Energy CA : City of Los Angeles - DWP (LADWP) AZ : Southern California Edison CA : Southern California Edison CA : Pacific Gas and Electric (PG&E) CA : Sacramento Municipal Utility District (SMUD) TN : Nashville Electric Service MT : NorthWestern Energy NE : NorthWestern Energy SD : NorthWestern Energy WY : NorthWestern Energy MD : Baltimore Gas and Electric DC : PEPCO MD : PEPCO IN : Indianapolis Power and Light (IP&L) WA : Puget Sound Energy WA : Tacoma Public Utilities
Interrupt rating
Depends on selected main circuit breaker
Enclosure
Indoor/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 - 1MM512R
Compact, indoor/outdoor enclosure provides flexible siting for residential or light commercial installs, with a 125A amperage rating and an 800A bus rating that accommodates typical service feeders while leaving room for future expansion. This configuration maximizes space, reduces retrofit costs, and speeds up commissioning for new builds or upgrades in single-family homes and small multi-tenant projects. The five sockets with aluminum ring construction deliver durable, weather-resistant metering points that simplify maintenance and long-term reliability in varying climates. Interrupt rating depends on the selected main circuit breaker, enabling tailored protection levels without enclosure changes, which supports code-compliant protection schemes and easier upgrades. UL Listed certification and widespread utility approvals underpin acceptance by utilities and inspectors, smoothing permit processes and supplier qualification. A 1-year warranty (or 18 months from shipment) minimizes ownership risk and supports predictable maintenance budgets, while compatibility with Eaton metering products ensures seamless integration into existing power management ecosystems. Overall, the 1MM512R reduces installation time, improves service reliability, and scales efficiently for future capacity needs in residential and light commercial deployments.
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FAQs
Installers should verify indoor/outdoor placement per local codes, ensure proper clearance for the 57.5 inch height, and align with the 7.01 inch depth and 12.26 inch width. Use an appropriate main circuit breaker to set the desired interrupt rating, and connect to 120/240 V single-phase supply with 125 A service rating. The unit’s five sockets require careful routing of conductors to maintain enclosure integrity and corrosion resistance.
Key specs include a 125 A amperage rating, 800 A bus rating, 120/240 V, indoor/outdoor enclosure, and five sockets. Interrupt rating depends on the main breaker selected, with UL Listed certification supporting interconnection to utility standards. Utilities typically require robust metering enclosures with weather resistance and appropriate wiring spaces, both of which are addressed by this model.
Yes. The 1MM512R is designed for single-phase metering in homes and light commercial settings, with a scalable 800 A bus and 125 A service to accommodate modest multi-tenant expansions. Its aluminum ring construction and indoor/outdoor rating support varied environments, making it a flexible choice for single-family residences and small multi-tenant configurations.
The 1MM512R is UL Listed, a key certification for electrical enclosures. It also carries extensive utility approvals across many providers, including Atlantic City Electric, CenterPoint Energy, Dominion, PEPCO, and others, facilitating faster interconnection and acceptance in regulated installations.
Maintenance is minimized by a durable aluminum ring, robust enclosure rated for indoor/outdoor use, and a fixed 5-socket layout that simplifies service access. The vendor warranty (one year from installation or 18 months from shipment) reduces ownership risk, while faster installation and utility approvals shorten project timelines and support lower total cost of ownership (TCO) over the system’s life.