Eaton 3MM412RC2AC Residential Meter Stack - UL Listed
Part Number: 3MM412RC2AC
Quick Summary
The Eaton 3MM residential meter stack is a multi-metering solution designed for outdoor electrical service panels. Engineers often struggle with space constraints, wiring complexity, and field reconfiguration when adding meters for multi-tenant or mixed-use facilities. This unit carries UL Listed safety certification and is built for outdoor installation, featuring a flexible five-jaw configuration and a field-change option from ring to ringless as needed. By consolidating meters in a single enclosure, it reduces installation time, wiring clutter, and material costs while simplifying maintenance and regulatory reporting. It also aligns with residential and light commercial applications by supporting 120/208 Vac operation and compatibility with common MCBs.
Product Information
Extended Description
3MM412RC2AC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, No bypass, Outdoor, 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
3MM412RC2AC
UPC
782114632048
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
Catalog Notes
Fifth jaw included at 9oclock position. To change in field from ring to ringless-order 1MMRC125.
Type
Multiple metering
Feature summary: Outdoor multi-metering with a 125A rating and copper bus rated for 800A, plus a five-jaw design for flexible configurations. Benefit: Consolidates metering in a single rugged enclosure, freeing space and reducing material waste while maintaining high electrical safety standards. Application: Ideal for multi-tenant residential buildings and small commercial facilities that require efficient, scalable metering with straightforward field adjustments. Feature: 120/208 Vac operation and four sockets support diverse branch circuits. Benefit: Simplifies supply coordination and helps meet utility interconnection requirements, enabling faster commissioning. Application: Suitable for mixed-use sites where phased meter deployment is common. Feature: Fifth jaw included at the 9 o’clock position; field ring-to-ringless change is available with order 1MMRC125. Benefit: In-field configurability lowers downtime and service interruptions during upgrades. Application: Retrofit projects and space-constrained installations. Feature: UL Listed certification and outdoor-rated design. Benefit: Ensures safety compliance and reliable performance in harsh environments, reducing regulatory risk. Application: Residential outdoor meter stacks exposed to weather and temperature variations. This solution also supports standard Eaton MCB selections, aligning with existing panel architectures for seamless integration.
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FAQs
The 3MM412RC2AC supports a flexible five-jaw configuration and four sockets for meters, with field-change capability from ring to ringless by ordering 1MMRC125. It is designed to work with common Eaton MCB selections, but confirm the specific module ratings (125A bus, 800A copper bus) to ensure full compatibility and safe terminations in your panel.
This unit is rated for 125A with a copper bus rated at 800A, designed for outdoor use. It supports 120/208 Vac operation and multiple metering configurations (three-phase in, single-phase out). The design enables efficient, scalable metering for multi-tenant or mixed-use installations while maintaining safety and reliability.
Yes. The Eaton 3MM412RC2AC is specifically built for multi-meter residential applications in outdoor environments. Its five-jaw configuration, multiple sockets, and field-configurability support multi-tenant deployments, helping to consolidate metering in a single enclosure while simplifying wiring, maintenance, and utility coordination.
The model is UL Listed, confirming recognized safety compliance for electrical installations. While not all regulatory marks may be listed for every market, UL Listing provides a strong safety framework for outdoor residential metering equipment and aligns with common industry requirements for commercial and multi-dwelling installations.
Warranty coverage is Eaton’s standard policy: one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. This warranty supports defect remediation and ensures ongoing access to Eaton’s technical support for installation guidance, field configurability, and compatibility questions related to MCBs and accessory orders.