Eaton 3MM512R2RLACBC Residential Meter Stack - UL Listed
Part Number: 3MM512R2RLACBC
Quick Summary
Eaton 3MM512R2RLACBC residential meter stack is designed for multiple metering in commercial and light industrial electrical systems. Engineers face the challenge of coordinating meters, feeders, and safety clearances in outdoor enclosures—this unit consolidates those functions. UL Listed safety certification supports regulatory compliance for electrical distribution equipment, while its outdoor-ready design withstands weather exposure. With 125 A nominal rating and 800 A bus, 120/208 VAC capability, and five-jaw sockets, it enables scalable, efficient metering. This stack simplifies multi‑metering, reduces field wiring complexity, and aligns with Eaton's metering product ecosystem for scalable configurations across growing sites.
Product Information
Extended Description
3MM512R2RLACBC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Al, Bus:800A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:5, 3-phase in, single-phase out, A-C/B-C, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM512R2RLACBC
UPC
782116940684
Product Length/Depth
12.26 in
Product Height
57.5 in
Product Width
7.01 in
Product Weight
106 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 - 3MM512R2RLACBC
Feature → Business Impact → Application: The 3MM512R2RLACBC supports multiple metering in a single outdoor enclosure, reducing the footprint and simplifying maintenance while improving data accuracy for energy management in multi-tenant facilities. Benefit: Consolidated metering reduces installation time and operating cost, enabling quick fault isolation and easier utility reads in commercial buildings. Application: Ideal for residential or light commercial sites needing centralized energy monitoring without duplicating enclosures or wiring.
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FAQs
Start with the outdoor enclosure prepared for a five-jaw configuration and ensure the 125A service rating matches your feeder. Place the unit so the fifth jaw is at the 9 o'clock position as catalog notes indicate, then connect the 3-phase in, single-phase out conductors per the included wiring diagram. Verify clearances and torque settings, secure all connections, and perform a functional test with a temporary meter to confirm phase balance before commissioning.
The meter stack is rated for 125A with an 800A bus rating, supports 120/208 VAC operation, and provides five-jaw sockets for multi-meter configurations. It is designed for outdoor use, with no bypass paths specified and multiple metering capability, enabling efficient energy monitoring for multi-tenant or light commercial applications.
Yes. The multiple metering capability, outdoor-rated enclosure, and 3-phase in with single-phase out configuration make it well suited for multi-tenant commercial settings. It allows centralized energy measurement and simplifies utility reads across units while maintaining safe, compliant installation under UL Listed standards.
This product carries UL Listed certification, signaling compliance with recognized safety standards for electrical distribution equipment. Certification matters because it supports regulatory approvals, reduces project risk, and aligns with procurement requirements for industrial and commercial installations, especially in outdoor environments where safety and reliability are critical.
By consolidating metering into a single outdoor stack, maintenance cycles shorten, fault diagnosis becomes faster, and data accuracy improves due to centralized wiring and standardized components. The unit’s compatibility with Eaton metering catalog notes and its durable outdoor design help reduce long-term service calls and support scalable energy management for growing sites.