Eaton 3MM220R12RLC Residential Meter Stack - UL Listed
Part Number: 3MM220R12RLC
Quick Summary
Eaton 3MM220R12RLC residential meter stack is designed to support multiple metering in outdoor electrical services. It enables clean, centralized metering for multi-tenant or mixed-use facilities, reducing wiring clutter and simplifying maintenance. UL Listed certification underpins safety compliance while its outdoor-rated construction stands up to weather exposure and rugged installation conditions. The unit offers a 200A service with a 1200A bus, three-phase in and single-phase out configurations, and flexible socket options, enabling seamless integration with common MCB selections. Leveraging this stack helps utilities and contractors streamline procurement, shorten install times, and improve long-term service reliability while meeting code requirements with confidence.
Product Information
Extended Description
3MM220R12RLC Eaton: Eaton 3MM residential meter stack, Multiple metering, 200A, Cu, Bus:1200A, No by, Outdoor, Depends on selected MCB, Five-jaw, Sockets:2, 3-ph in, 1-ph out, A-B, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ringless, Socket:200A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM220R12RLC
UPC
786685512945
Product Length/Depth
13.5 in
Product Height
52.35 in
Product Width
7.01 in
Product Weight
69 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
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM220R12RLC
Feature: Multiple metering in a single stack → Benefit: Centralized metering reduces wiring complexity and labor costs, enabling faster installation and easier ongoing maintenance in multi-tenant facilities. Application: Ideal for residential buildings or mixed-use properties seeking streamlined energy management. Long-tail keywords: residential meter stack, multi-meter service, outdoor metering, centralized metering solution. Feature: 200A service with 1200A bus → Benefit: Supports current and future loads with room for expansion, reducing the need for early rework. Application: Mid-size commercial-residential campuses and multi-tenant properties that anticipate growth. Long-tail keywords: 200A service, 1200A bus, scalable metering, expansion-ready meter stack. Feature: 3-ph in, 1-ph out with five-jaw sockets → Benefit: Flexible configuration matches common utility MCCB/MCB schemes, simplifying protection coordination. Application: New construction or retrofit projects that require versatile metering interfaces. Long-tail keywords: 3-ph in 1-ph out, five-jaw socket, metering sockets. Feature: Outdoor, UL Listed construction → Benefit: Weather-resistant enclosure combined with safety certification ensures reliable outdoor operation and code compliance. Application: Outdoor installations in harsh environments without sacrificing access or safety. Long-tail keywords: outdoor meter stack, UL Listed metering, weather-rated electrical enclosure. Feature: Compatibility with selected MCBs and socket options → Benefit: Faster procurement and installation with reduced sequencing risk, improving project timelines. Application: Utility-driven installations and contractor-led builds where MCB compatibility is critical. Long-tail keywords: MCB compatibility, outdoor metering compatibility, installation-ready meter stack. Feature: Warranty and support policies → Benefit: Clear coverage reduces risk and supports long-term ownership. Application: Asset management programs seeking predictable maintenance and reliability. Long-tail keywords: Eaton warranty policy, metering product warranty, service support.
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FAQs
The Eaton 3MM220R12RLC is designed for outdoor, multi-meter residential service applications. It supports a 200A service with a 1200A bus and offers 3-phase in, 1-phase out configurations with five-jaw sockets and two meters, enabling centralized metering for multi-tenant facilities while simplifying protection coordination for MCBs.
Key specifications include a 200A service rating, a 1200A bus rating, voltage of 120/208Vac, copper bus construction, and outdoor-rated enclosure. It supports sockets for two meters and a 3-ph in / 1-ph out configuration, with five-jaw connectors to accommodate standard metering and protection schemes.
By consolidating metering in a single outdoor enclosure, the 3MM220R12RLC reduces wiring runs and field connections, shortening install time and lowering labor costs. Its robust outdoor design minimizes weather-related maintenance, and the UL Listed certification provides safety assurance, helping maintenance teams plan routine checks and streamlining compliance reporting.
The stack is UL Listed, providing safety certification for residential metering assemblies. It is covered by Eaton's warranty policy 25-000, which offers one year from installation or 18 months from shipment, whichever occurs first, ensuring protection against manufacturing defects during early operation.
Plan for a weather-rated outdoor installation with compatibility to selected MCBs, given the 'Depends on selected MCB' note. Ensure proper conduit routing to accommodate 120/208Vac operation, 200A service, and 1200A bus. The unit dimensions (approximately 13.5 in L, 52.35 in H, 7.01 in W) and weight (69 lb) influence mounting, space planning, and retrieval during service events.