Eaton 3MM512C2AB Residential Meter Stack - UL Listed
Part Number: 3MM512C2AB
Quick Summary
Eaton 3MM512C2AB Residential Meter Stack is a modular metering enclosure designed for multi‑meter services in residential applications. This stack addresses common challenges in shared meter rooms by delivering robust bus capacity and streamlined wiring in a compact footprint. UL Listed certification underpins safety and reliability for indoor installations, while compatibility with Eaton MCB configurations BR2_, BRH2_, BRHH2_, and BRX2 supports flexible metering layouts. With a 800 A bus rating and 125 A socket capability, this solution delivers scalable metering for evolving power management needs. In practice, it helps engineers reduce installation time, improve metering accuracy, and simplify maintenance across multiple units in a single enclosure.
Product Information
Extended Description
3MM512C2AB Eaton: Eaton 3MM residential meter stack, Multiple metering, 125 A, Copper, Bus:800 A, No bypass, Indoor, Depends on selected MCB, Five-jaw, Sockets:5, Three-ph in, single-ph out, A-B, BR2_, BRH2_, BRHH2_, BRX2, Ring, Socket:125 A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM512C2AB
UPC
782116940066
Product Length/Depth
12.26 in
Product Height
8 in
Product Width
7.01 in
Product Weight
75 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
Bus Rating
800 A
Number of jaws
Five-jaw
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM512C2AB
Feature → Business Impact → Application: The Eaton 3MM512C2AB is a multiple metering enclosure with an 800 A bus rating and five-jaw sockets, enabling resilient service distribution for multi-meter configurations. This translates to greater capacity headroom, faster wiring, and improved accuracy in monitoring separate loads within a single unit. Application in high-density residential or light commercial projects benefits from reduced footprint and centralized metering control, while compatibility with MCB configurations BR2_, BRH2_, BRHH2_, BRX2 supports a wide range of panel assortments and retrofit scenarios. Feature → Installation efficiency → Application: With indoor only installation and 120/208 Vac operation, the meter stack streamlines setup in finished spaces, minimizing custom fabrication and field-terminals while preserving clear labeling and safety clearances. Feature → Reliability and compliance → Application: UL Listed certification provides essential safety validation for electrical enclosures used in occupied spaces, while Eaton’s warranty and documented support reduce lifecycle risk and total cost of ownership. Feature → Measurable outcomes → Application: The 125 A socket rating coupled with five-jaw design enables reliable service taps and straightforward metering for multiple circuits, contributing to faster fault isolation and improved energy management visibility. Industry context notes that utilizing a standardized meter stack in multi-dwelling or campus environments helps utilities and contractors meet commissioning timelines and quality standards while enabling scalable metering strategies.
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FAQs
The Eaton 3MM512C2AB is designed for indoor installation as a compact, modular metering stack. It supports multiple metering configurations and is compatible with Eaton MCB kits BR2_, BRH2_, BRHH2_, and BRX2. Its five-jaw design and 125 A sockets simplify retrofit and new builds by reducing the need for custom enclosures. When selecting mounting, ensure adequate enclosure access, proper ventilation, and compliance with local electrical codes for indoor metering assemblies.
Key specs include an 800 A bus rating, five-jaw configuration, 125 A sockets, and operation at 120/208 Vac. This supports multi-meter services with centralized monitoring while maintaining safe, code-compliant connections. The enclosure is rated for indoor use and is designed to integrate with common MCB configurations to simplify sequencing and load distribution across meters.
Yes, the unit supports flexible metering topologies, including configurations that accommodate three-phase inputs and single-phase outputs where required. Its compatibility with Eaton MCB families BR2_, BRH2_, BRHH2_, BRX2 provides a path for configuring phase distribution to suit multi-meter installations in residential or light commercial settings.
The 3MM512C2AB carries UL Listed certification, confirming compliance with essential electrical safety standards for indoor metering enclosures. This certification supports risk mitigation in occupied spaces and aligns with typical utility and contractor quality requirements for residential metering solutions.
Recommended resources include Eaton’s Residential and Light Commercial Metering catalog and the Eaton specification sheet for model 3MM512C2AB. These documents provide wiring diagrams, dimension details, compatibility notes, and installation guidelines. Additional support can be accessed via Eaton’s product pages and customer service for warranty or field-related questions.