Eaton 3MM512R12RLBC Meter Stack - UL Listed, 125A
Part Number: 3MM512R12RLBC
Quick Summary
Eaton 3MM512R12RLBC is a residential meter stack designed for multi-meter installations in commercial buildings. For engineers and electricians, coordinating meters across tenant lines and service drops can slow projects and inflate costs. UL Listed certification ensures safety and reliability in outdoor enclosures, while the rugged construction supports long outdoor life and maintenance access. The rugged design supports expansion and ensures quick, compliant installations in multi-tenant or mixed-use environments. By consolidating metering in a single outdoor enclosure, operators gain scalable capacity and simplified asset management, while reducing field labor and downtime. Understanding customer needs, this solution supports rapid deployment across retrofit projects and new builds alike. It also aligns with energy management goals by organizing metering data for more accurate usage analytics.
Product Information
Extended Description
3MM512R12RLBC Eaton: Eaton 3MM residential meter stack, Multiple meter, 125A, Cu, Bus:1200A, Horn bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:5, Three-phase in, single-phase out, B-C, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM512R12RLBC
UPC
786685513027
Product Length/Depth
12.26 in
Product Height
57.5 in
Product Width
7.01 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
Catalog Notes
Fifth jaw included at 9oclock position
Type
Multiple metering
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM512R12RLBC
Feature: Multiple metering capability consolidates meters in a single enclosure, reducing hardware footprint and simplifying tenant billing. Business Impact: Improves accuracy of energy accounting, lowers field wiring complexity, and reduces installation time. Application: Suitable for multi-tenant residential buildings, light commercial properties, and outdoor metering需要. Feature: Outdoor enclosure designed for exterior installation with UL Listed safety certification. Business Impact: Enables outdoor deployment, lowers indoor space needs, and supports compliance with safety standards. Application: Exterior meter stacks on campuses, apartment complexes, and service entrances exposed to weather. Feature: Five-jaw sockets with a fifth jaw included at 9 o'clock position adds capacity for additional feeders. Business Impact: Facilitates scalable upgrades without cabinet replacement, cutting retrofit costs. Application: Retrofit projects and staged metering expansions. Feature: 125A service rating with Cu bus 1200A supports higher loads in a compact form. Business Impact: Accommodates growing feeding demands while maintaining a small footprint. Application: Main service distribution in tight urban or campus environments. Feature: Three-phase in, single-phase out configuration supports mixed service types. Business Impact: Streamlines protection and metering across varied loads, reducing inventory complexity. Application: Commercial and residential applications with diverse circuits. Feature: Compatibility with selected MCBs and horn bypass offers design flexibility. Business Impact: Enables tailored protection schemes and easier field maintenance. Application: Utility-scale or building management installations needing adaptable metering. Feature: UL Listed certification and Eaton warranty provide safety compliance and risk protection. Business Impact: Reduces procurement risk and supports long-term asset protection. Application: Regulatory deployments and facility asset management programs.
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FAQs
Yes. The 3MM512R12RLBC is designed as an outdoor residential meter stack with UL Listed safety certification, providing a rugged enclosure for multiple meters and easy access for service drops and maintenance.
It supports a 125A service with a Cu bus rated at 1200A, offers five-jaw sockets (with a fifth jaw at 9 o'clock), and is configured for three-phase in and single-phase out metering to support mixed load applications.
The unit is a multiple metering stack with five sockets and a fifth jaw included at the 9 o'clock position, enabling expansion to additional feeders without cabinet swaps.
Documentation is available via Eaton: a residential/metering catalogs PDF and a dedicated specification sheet for 3MM512R12RLBC, including installation guidelines and component notes.
The product carries UL Listed certification for safety compliance, and Eaton provides a one-year warranty from installation or 18 months from shipment, depending on policy 25-000.