Eaton 3MM412RRLACBC Residential Meter Stack - UL Listed
Part Number: 3MM412RRLACBC
Quick Summary
Eaton 3MM412RRLACBC residential meter stack enables multi-metering in shared electrical panels for residential and light commercial applications. This design addresses space constraints, wiring clutter, and maintenance complexity that often slow project timelines and degrade reliability. UL Listed certification, outdoor-rated construction, and a robust 125A service capacity provide essential safety and compliance assurances for outdoor installations. By delivering a compact, scalable metering solution, it supports energy management, tenant metering, and simplified panel layouts, while reducing wiring runs and easing future expansion. For engineers and procurement teams, the 3MM412RRLACBC aligns with cost containment and regulatory requirements without sacrificing performance or serviceability.
Product Information
Extended Description
3MM412RRLACBC Eaton: Eaton 3MM residential meter stack, Multiple meter, 125A, Al, Bus:800A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:4, Three-phase in, single-phase out, A-C/B-C, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412RRLACBC
UPC
782116890767
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
61 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
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM412RRLACBC
Feature → Business Impact → Application: The multi-metering capability enables a single enclosure to manage multiple meters, reducing the need for separate panels and cutting installation time in residential and small commercial settings. This translates to lower labor costs and denser electrical layouts in retrofit projects, especially in multifamily buildings. Feature → Business Impact → Application: 125A service with 120/208V options supports common utility feeds and tenant separations, enabling compliant billing and load management in mixed-use developments. Feature → Business Impact → Application: Outdoor, weather-rated construction with UL Listed certification ensures long service life in exposed environments, minimizing maintenance cycles and protecting investments in common-area infrastructure. Feature → Business Impact → Application: Five-jaw and four-socket arrangement simplifies wiring from the meter to main distribution, improving reliability and reducing the potential for miswiring during field installations. Feature → Business Impact → Application: Three-phase in, single-phase out capability facilitates scalable metering for small commercial spaces, enabling accurate power quality monitoring and energy accounting. Feature → Business Impact → Application: The bus rating of 800A supports future expansion without replacing the enclosure, providing a cost-effective path for growth and ROI over the equipment’s lifetime. This combination of compatibility, safety, and practical design supports faster install times, lower total cost of ownership, and improved compliance across diverse metering scenarios.
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FAQs
The Eaton 3MM412RRLACBC excels in multi-tenant residential buildings and light commercial spaces where shared service panels must meter multiple loads. Its outdoor-rated enclosure, 125A service, and four-socket configuration support compact mounting and straightforward wiring runs, reducing space requirements and installation time while meeting typical regulatory expectations for outdoor metering.
The design accepts multiple meters within one enclosure, with four sockets and a five-jaw termination scheme. This layout simplifies conductor routing from meters to the main distribution, minimizes interconnects, and enables separate billing for tenants or tenants within mixed-use facilities, delivering clear energy accountability and improved maintenance tracking.
Yes. The product is UL Listed, and its outdoor-ready configuration is intended for exterior installation. This certification confirms compliance with recognized safety standards, while the enclosure design provides weather resistance for long-term operation in outdoor environments, reducing a common source of ongoing maintenance concerns.
Ensure correct alignment of three-phase in and single-phase out connections, verify socket ratings (125A) and the four-socket layout, and follow enclosure wiring sequences to prevent miswirings. The 800A bus rating supports future expansion, so plan for potential additional meters or feeders without upgrading the enclosure.
Benefits include reduced cabling, simpler field wiring, and fewer panel separations, which cut labor and commissioning time. With UL Listings and outdoor durability, ongoing maintenance intervals are extended, contributing to a lower total cost of ownership and faster payback on energy management and tenant-metering initiatives.