Eaton 3MM212C2AC Residential Meter Stack - UL Listed
Part Number: 3MM212C2AC
Quick Summary
Eaton 3MM212C2AC residential meter stack provides multi-metering for indoor residential and light commercial power management. Dispersed metering often creates cramped spaces, wiring chaos, and maintenance headaches, driving up installation time and risk. UL Listed safety certification underpins reliable installation, backed by Eaton’s warranty framework and support. This indoor, compact enclosure is compatible with BR-series MCBs and supports scalable metering configurations, enabling a streamlined path to enhanced energy visibility. By consolidating meters into a single stack, owners gain clearer energy insight, simplified compliance, and reduced long-term operating costs through easier service and maintenance.
Product Information
Extended Description
3MM212C2AC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, No bypass, Indoor, Depends on selected MCB, Five-jaw, Sockets:2, Three-phase in, single-phase out, A-C, BR2_, BRH2_, BRHH2_, BRX2, Ring, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM212C2AC
UPC
782114631935
Product Length/Depth
12.26 in
Product Height
41.8 in
Product Width
7.01 in
Product Weight
52 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
Feature: Multi-metering enclosure consolidates metering points into one compact stack → Business Impact: Reduces panel count, saving space and simplifying management → Application: Ideal for multi-tenant residential and small commercial properties. Feature: 125A service with copper bus rated for 800A, no bypass, five-jaw sockets, sockets:2 → Business Impact: Improves connection reliability and safety with robust bus performance and secure terminations → Application: Suitable where high-current metering is required with dependable fault current handling. Feature: Three-phase in, single-phase out with 120/208 VAC operation → Business Impact: Supports modern mixed-load profiles and utility compatibility while preserving simplicity of wiring → Application: Great for mixed-use buildings transitioning to centralized metering. Feature: Indoor-rated enclosure with dimensions 12.26 in L × 41.8 in H × 7.01 in W and weight around 52 lb → Business Impact: Space-efficient footprint and manageable installation weight → Application: Fits standard indoor electrical rooms and walk-in spaces with predictable layout planning. Feature: UL Listed certification and Eaton warranty (25-000) → Business Impact: Reduces compliance risk and post-installation uncertainty, enabling safer procurement and faster ROI → Application: Procurement teams benefit from recognized safety certification and coverage. Feature: Compatibility with BR2, BRH2, BRHH2, BRX2 MCBs and dedicated 125A sockets → Business Impact: Flexible integration with common Eaton protection catalogs → Application: Streamlined field upgrades and serviceability with familiar components.
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FAQs
To install the 3MM212C2AC, verify compatibility with BR-series MCBs (BR2, BRH2, BRHH2, BRX2) and confirm the 125A socket connections. Mount the enclosure in a suitable indoor location, connect three-phase input and single-phase output as specified, and secure the copper bus with appropriate terminations. Follow manufacturer installation instructions and ensure all work is performed by a qualified electrician to maintain UL Listed compliance.
Check that the service configuration aligns with three-phase in and single-phase out, and that the two 125A sockets are appropriate for your feeder conductors. The unit supports a copper bus rated for 800A and is compatible with Eaton BR-series MCBs such as BR2, BRH2, BRHH2, and BRX2. Ensure the supply is 120/208 VAC and plan wiring to minimize voltage drop and maintain safety clearances inside the enclosure.
The 3MM212C2AC is covered under Eaton’s warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. It carries UL Listed certification, underscoring safety and reliability. For support, rely on Eaton’s technical resources and authorized service channels to address installation, maintenance, and metering questions.
Yes. The unit is UL Listed, ensuring compliance with recognized safety standards for electrical equipment. It is designed for indoor use, supports reliable multi-metering, and is intended to be installed by qualified personnel in accordance with applicable electrical codes and Eaton installation guidelines.
By consolidating multiple meters into a single enclosure, the 3MM212C2AC reduces panel footprint and wiring complexity, leading to faster installation and easier ongoing maintenance. The centralized metering improves energy visibility for tenants or facilities managers, supporting better energy use analytics, load management, and potential operating cost reductions over the life of the installation.