Eaton 3MM212RC2AB Residential Meter Stack - UL Listed
Part Number: 3MM212RC2AB
Quick Summary
Eaton 3MM212RC2AB residential meter stack functions as a centralized metering enclosure for multi-tenant and commercial buildings. Engineers often wrestle with wiring complexity, space constraints, and outdoor exposure while staying code-compliant. This UL Listed unit is outdoor-rated and supports a 125A service with a five-jaw configuration to simplify terminations. Built for reliability, it integrates with Eaton MCBs for scalable metering setups, delivering faster installation and predictable performance across residential, commercial, and mixed-use projects. For procurement and field teams, the design translates to reduced commissioning risk and better long-term energy visibility.
Product Information
Extended Description
3MM212RC2AB Eaton: Eaton 3MM residential meter stack, MM, 125A, Copper, Bus:800A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:2, Three-phase in, single-phase out, A-B, BR2_, BRH2_, BRHH2_, BRX2, Ring, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM212RC2AB
UPC
782114631966
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
Catalog Notes
Fifth jaw included at 9oclock position
Type
Multiple metering
Multiple metering capability enables contractors to monitor several loads from one enclosure, enabling precise energy management for multi-tenant buildings. This capability directly supports accurate billing, peak demand tracking, and energy-efficiency programs, reducing operating costs over the life of the installation. The rugged outdoor enclosure with copper bus rated at 800A and a 125A service rating provides long-term durability and safety, minimizing maintenance calls and downtime in outdoor environments. Five-jaw sockets and two primary terminations simplify wiring and reduce termination errors, speeding up installs and improving overall reliability in post-construction commissioning. The system’s compatibility with Eaton MCBs offers modular protection and straightforward expansions, which is particularly beneficial for phased retrofits and tenant load growth. A clear warranty path and UL certification further de-risk procurement, helping procurement teams meet project timelines and stay within budget while preserving system integrity.
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FAQs
The 3MM212RC2AB is designed to be compatible with Eaton modular MCBs and supports a three-phase in, single-phase out configuration. When selecting a compatible MCB, verify bus bar alignment, enclosure dimensions, and terminations per Eaton’s installation diagrams. This compatibility reduces part mismatch risk and speeds up commissioning, especially in retrofit projects where space is constrained.
Key specifications include a 125A service rating, an 800A copper bus, three-phase in and single-phase out, five-jaw sockets with two terminations, outdoor-rated construction, no bypass, and operation at 120/208 VAC. The unit is UL Listed, ensuring compliance with safety standards and simplifying documentation for electrical inspectors.
Yes. The 3MM212RC2AB is explicitly designed for outdoor installations, featuring a weather-resistant enclosure and a robust copper bus. Its UL Listed certification and outdoor-capable design make it appropriate for residential meter centers and mixed-use sites where exterior mounting is required, while maintaining safe and reliable metering performance.
The product carries UL Listed certification, indicating compliance with recognized safety standards for electrical equipment. This certification supports regulatory acceptance and reduces risk during inspections. There are no additional certifications listed in the provided data, so verify project-specific requirements if CE, IP, or SIL certifications are mandated by local codes.
The ROI is driven by faster installation, fewer field wiring errors, and lower maintenance downtime due to a reliable outdoor-rated enclosure and modular compatibility with Eaton MCBs. The unit comes with a one-year warranty from installation or 18 months from shipment, whichever occurs first, which helps manage procurement risk and supports long-term lifecycle planning.