Eaton 1MM512RRL Meter Stack - Outdoor UL Listed
Part Number: 1MM512RRL
Quick Summary
Eaton 1MM512RRL meter stack is a residential outdoor metering solution that streamlines single‑phase service entrances. This compact, weather‑rated assembly helps utilities and contractors manage 125A loads with an 800A bus rating for scalable capacity. A common challenge is protecting metering hardware from the elements while simplifying field wiring; the 1MM512RRL addresses this with an outdoor aluminum enclosure, ringless mounting, and a 4‑jaw design. UL Listed certification and broad utility participation support safer installations and faster approvals across multiple regions. By delivering durable enclosure protection alongside ready metering capability, this unit reduces rework, accelerates project timelines, and supports cost‑effective, compliant service entrance configurations.
Product Information
Extended Description
1MM512RRL 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, 5 Sockets, Aluminum, Ringless, 120/240 Vac, 4-jaw
Product Name
Eaton residential meter stack
Catalog Number
1MM512RRL
UPC
786849052089
Product Length/Depth
7.01 in
Product Height
57.5 in
Product Width
12.26 in
Product Weight
68 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
ME : Central Maine Power NC : Dominion VA : Dominion ME : Emera Maine (Bangor Hydro Electric Co./ Maine Public Service Company) AR : Entergy LA : Entergy MS : Entergy TX : Entergy GA : Georgia Power FL : Tallahassee City Electric SC : South Carolina Electric and Gas (SCE&G) IN : Indiana Michigan Power (IMP) (AEP East) MI : Indiana Michigan Power (IMP) (AEP East) OH : AEP Ohio (AEP East) TN : Appalachian Power (AEP East) VA : Appalachian Power (AEP East) WV : Appalachian Power (AEP East) TX : Texas-New Mexico Power (TNMP) NM : Texas-New Mexico Power (TNMP)
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
Guidance to comply with NEC 230.71 for service entrance equipment installation in garden-style apartments
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM512RRL
Outdoor aluminum enclosure provides weather resistance and long-term reliability, reducing maintenance cycles and field calls while protecting sensitive metering hardware in harsh environments. Feature: outdoor enclosure with aluminum construction → Benefit: superior durability and corrosion resistance → Application: exterior service entrances in residential developments. The 125A amperage rating and 800A bus rating offer built-in headroom for load growth, enabling engineers to design for current needs and future expansion without costly enclosures swaps. Feature: 125A/800A capability → Benefit: scalable capacity with predictable performance → Application: multi‑tenant buildings and single-family communities. Single‑phase in/out with 120/240 VAC and 5 sockets, ringless mounting, and a 4‑jaw mechanism simplifies wiring and reduces installation time, delivering tangible labor savings and cleaner service transitions. Feature: quick‑install mounting → Benefit: faster commissioning → Application: pre‑wired service entrances in new builds. The enclosure is rated Outdoor and UL Listed, supporting code compliance and safer field deployments; utility approvals across ME, NC, VA, and other states further ease project acceptance. Feature: UL Listed + broad utility approvals → Benefit: reduced inspection risk and wider market compatibility → Application: nationwide deployment. The warranty (one year from installation or 18 months from shipment) provides financial protection against early failures, supporting total cost of ownership. Feature: warranty coverage → Benefit: lower total cost of ownership → Application: project procurement and long‑term operation.
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FAQs
The unit is designed for outdoor installation with an aluminum enclosure, ringless mounting, and a 4‑jaw configuration. Plan for single‑phase in/out and 120/240 V service; ensure main breaker compatibility since the interrupt rating depends on the selected main circuit breaker. Verify regional utility approvals and NEC compliance during site planning to minimize field rework.
Key specs include an amperage rating of 125A and a bus rating of 800A, with 120/240 VAC single‑phase in/out and five sockets. This combination supports current residential loads with headroom for growth, while the robust bus rating helps prevent overheating during peak demand. The interrupt rating is determined by the chosen main breaker, allowing tailored protection for specific installations.
Yes. The 1MM512RRL is purposefully designed for outdoor residential service entrances and single‑phase metering needs. Its 125A/800A specifications, weather-rated enclosure, and 120/240 V operation make it adaptable for both garden-style apartments and single‑family homes, simplifying multi‑unit metering while maintaining code compliance.
The product is UL Listed, signifying safety and compliance with recognized standards. Utility approvals span multiple regions (ME, NC, VA, TX, and others), facilitating deployment across diverse markets. While additional certifications beyond UL Listed aren’t listed here, consulting Eaton datasheets or application notes can confirm any site‑specific requirements or local code considerations.
Outdoor aluminum construction lowers corrosion risks and reduces maintenance needs in harsh environments. The durable enclosure supports longer service life with fewer field interventions. A one‑year warranty from installation (or 18 months from shipment) provides protection during early operation, contributing to lower lifecycle costs and faster project ROI for residential metering projects.