Eaton 3MM220RRLC Residential Meter Stack - UL Listed
Part Number: 3MM220RRLC
Quick Summary
The Eaton 3MM220RRLC residential meter stack enables multi-metering in outdoor service panels. Engineers often struggle with space constraints, wiring complexity, and code compliance when serving multi-tenant facilities. UL Listed safety certification ensures reliable operation in external environments, while the unit is designed for outdoor use with a robust bus assembly to meet utility expectations. This solution supports efficient metering with 200A socket capacity and 120/208Vac service, delivering clear business value through scalable energy accounting, simplified installations, and reduced field rework for distributed electrical systems. Ideal for residential and light commercial applications, it aligns with metering product families while supporting compliant, future-ready power distribution deployments.
Product Information
Extended Description
3MM220RRLC Eaton: Eaton 3MM residential meter stack, Multiple metering, 200A, Cu, Bus:800A, Horn by, Outdoor, Depends on selected MCB, -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
3MM220RRLC
UPC
782114990711
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 - 3MM220RRLC
Feature: Multiple metering capability for outdoor service panels. Business impact: Enables independent energy accounting for tenants or stages without adding separate enclosures, improving accuracy and bill reconciliation. Application: Suitable for multi-tenant residential buildings or light commercial facilities seeking scalable metering solutions. Long-tail keywords: outdoor meter stack, multi metering, residential metering equipment. Feature: 200A sockets with 120/208Vac operation. Business impact: Supports standard service voltages and higher load capacity, reducing the need for upsize or rework in retrofit projects. Application: New builds and retrofits in outdoor panels where reliable metering is required. Long-tail keywords: 200A metering, 120/208Vac metering, outdoor electrical distribution. Feature: Bus rating 800A and 3-phase in, 1-phase out configuration. Business impact: Allows flexible feed-through configurations and streamlined wiring topology for complex service arrangements, cutting installation time. Application: Utility and property management deployments with mixed phase loads. Long-tail keywords: bus rating 800A, three phase in one phase out, metering bus assembly. Feature: Outdoor rated, rugged construction with UL Listed certification. Business impact: Enhances durability and safety in exposed environments, reducing maintenance frequency and compliance risk. Application: Outdoor meter stacks for residential high-occupancy buildings and light commercial sites. Long-tail keywords: outdoor meter stack UL Listed, weather resistant metering, outdoor metering equipment. Feature: Sockets 2 and mounting compatibility with standard enclosures. Business impact: Simplifies field compatibility and reduces labor during installation, commissioning, and future expansions. Application: Retrofit projects where existing enclosures need compatible metering modules. Long-tail keywords: meter sockets, compatible enclosure, field installation efficiency. Insight: This Eaton solution is purpose-built for the realities of today’s distributed energy setups, offering measurable gains in installation speed, energy accounting accuracy, and long-term operating reliability for utilities, MEPs, and property managers.
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FAQs
The 3MM220RRLC is designed for outdoor residential and light commercial metering applications. It supports multi metering in outdoor service panels, helping property managers and utilities implement tenant billing and energy accounting without adding extra enclosures.
It provides 200A socket capacity, 120/208Vac operation, and a bus rating of 800A with two sockets. The configuration supports 3-phase in and 1-phase out, enabling flexible metering layouts in outdoor panels.
Yes. The unit is UL Listed for safety and outdoor use, which reduces regulatory risk for external installations and helps meet utility and contractor expectations for durable metering equipment.
The design supports compatibility with standard meter stack enclosures and offers straightforward wiring for multi-tenant metering. This simplifies retrofits and new builds by minimizing enclosure alterations and field labor.
By enabling accurate tenant energy accounting, reducing installation time, and lowering field rework, the 3MM220RRLC can shorten project timelines and improve utility billing accuracy, contributing to faster paybacks in multi-tenant or distributed-energy projects.