Eaton 3MM412C2AC Residential Meter Stack - UL Listed
Part Number: 3MM412C2AC
Quick Summary
The Eaton 3MM residential meter stack is a modular multi-meter solution for multifamily and commercial-residential buildings. Installing and maintaining several meters in tight spaces can drive up costs and complicate safe wiring. UL Listed safety certification underpins dependable installation, while indoor use and a flexible metering configuration support compliant, scalable projects. Designed to streamline procurement and field installation, it helps operators reduce risk, improve accuracy, and simplify tenant billing through centralized metering. It supports 125A service with a robust 800A bus, four sockets, and a configurable three-phase in, single-phase out arrangement to match diverse building architectures.
Product Information
Extended Description
3MM412C2AC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, No bypass, Indoor, Depends on selected MCb, Five-jaw,Sockets:4, 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
3MM412C2AC
UPC
782114631959
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
59 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
The meter stack enables multiple metering, allowing tenant-level energy sub-metering across units, common areas, and suites within a single enclosure. This drives billing accuracy, reduces energy waste, and supports demand-side management programs for property operators seeking transparent consumption data. In practice, it's ideal for multi-tenant projects needing transparent utility cost allocation while staying straightforward to commission and maintain over the building lifecycle. 125A service with an 800A bus rating provides scalable capacity as meters and circuits are added over time, without early overhaul. This architectural headroom reduces future upgrade costs, minimizes service interruptions during tenant-driven expansions, and supports phased implementation. It's well suited for mid-rise apartments and mixed-use buildings planning additional circuits and more complex metering schemes. Indoor-rated enclosure with UL Listed certification ensures safe, weather-protected installation and regulatory compliance in controlled environments. This reduces risk, speeds commissioning, and keeps inspections straightforward in routine building operations. Ideal for hallway closets, utility rooms, and other indoor locations where protection and easy maintenance matter for long-term reliability. Compatibility with four sockets and a five-jaw, plus a flexible three-phase in, single-phase out configuration, enables straightforward integration with existing MCb protection and distribution schemes. That reduces labor and material costs during retrofit projects and supports faster deployment of modern energy management hardware. Retrofit and new-build projects benefit from a metering architecture that adapts to evolving electrical layouts without disruptive rewiring. Dimensions and weight—12.26 in L, 7.01 in W, 48.5 in H, about 59 lb—support space planning, safe handling, and rigging considerations during installation. A compact footprint reduces enclosure size, eases lifting requirements, and lowers transport costs on site for urban jobs with limited access. This makes it suitable for utility rooms and mechanical spaces with restricted or congested layouts while preserving service continuity.
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FAQs
Plan for indoor placement in a utility room or hallway enclosure, verify compatibility with existing MCb protection, and mount the stack using the four sockets and five-jaw design. Ensure proper clearances and follow UL-listed installation guidelines. Consider the 12.26 in L, 7.01 in W, and 48.5 in H dimensions to fit the space and maintain service accessibility.
Its multiple metering capability enables tenant-level sub-metering, supports accurate billing, and drives energy-management initiatives. The 125A service with an 800A bus provides headroom for growth, while four sockets and a three-phase in/single-phase out configuration support diverse layouts common in multifamily and mixed-use properties.
Yes. The unit carries UL Listed certification, indicating compliance with essential safety standards for indoor metering installations. This designation helps streamline inspections and reduces risk when deploying multi-meter configurations in residential projects.
The meter stack measures 12.26 inches in length, 7.01 inches in width, and 48.5 inches in height, with an approximate weight of 59 pounds. These dimensions support efficient space planning and safe handling during installation in utility rooms or mechanical spaces.
Warranty coverage follows Eaton’s policy: one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. This provides protection for field performance and supports ongoing maintenance and inspections.