Eaton 3MM520RC Residential Meter Stack - UL Listed
Part Number: 3MM520RC
Quick Summary
Eaton 3MM520RC residential meter stack provides multi-metering for multi-tenant commercial buildings. Engineers often struggle with space constraints, outdoor resilience, and safe, reliable sectional metering—this unit addresses those pain points. UL Listed safety certification and outdoor-rated construction support dependable operation in 120/208Vac systems, with scalable metering options. This combination improves project timelines, reduces wiring complexity, and enables precise energy control for facilities management teams. Designed for outdoor enclosures, it supports five-jaw sockets and five metering points, delivering dependable service across 200A main and 800A bus ratings. With Eaton’s warranty policy and robust build quality, owners gain peace of mind during commissioning and long-term maintenance.
Product Information
Extended Description
3MM520RC Eaton: Eaton 3MM residential meter stack, Multiple metering, 200A, Cu, Bus:800A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:5, 3-phase in, 1-phase out, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ring, Socket:200A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM520RC
UPC
782116928149
Product Length/Depth
13.5 in
Product Height
74.96 in
Product Width
6.87 in
Product Weight
106 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 - 3MM520RC
Feature: Multi-metering capacity enables simultaneous monitoring of feeders and subcircuits. Business Impact: Reduces the need for multiple enclosures and speeds commissioning in multi-tenant, commercial environments. Application: Ideal for residential-to-light-industrial campus metering and shared-service buildings. Feature: 200A main with Cu bus rated to 800A. Business Impact: Improves current handling with low resistance paths, supporting precise load data and safer fault clearing. Application: Main service feeds and subfeeds in outdoor meter stacks for high-occupancy facilities. Feature: Five-jaw sockets and 3-phase in, 1-phase out configuration. Business Impact: Simplifies wiring, expands compatibility with MCB selections, and accelerates field upgrades. Application: Upgrading or expanding metering without new enclosures in commercial installations. Feature: Outdoor-rated enclosure and UL Listed certification. Business Impact: Ensures reliable operation in harsh environments with reduced weather-related downtime. Application: Outdoor meter stacks for campuses, retail centers, and industrial parks. Feature: CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM compatibility. Business Impact: Flexible metering paths and futureproofing for evolving electrical systems. Application: Scalable metering configurations for growing facilities, with supported documentation in Eaton catalogs and datasheets.
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FAQs
The 3MM520RC is designed for outdoor enclosures in commercial, residential, and light industrial environments. It supports 120/208Vac service and up to 200A metering with a Cu bus rated to 800A. The unit uses five-jaw sockets and provides 3-phase input with 1-phase output, with compatibility to selected MCBs and CCV2_X family configurations.
Multi-metering capability is built-in with multiple meters supported by CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, and CVH2_XMM configurations. It accommodates 200A metering with an 800A bus, enabling monitoring of diverse loads across a building or campus. The five-jaw sockets simplify wiring, while the outdoor-rated enclosure keeps measurements accurate in harsh environments. This reduces the need for separate subpanels and speeds commissioning.
Yes. The 3MM520RC is designed for outdoor installation and supports multi-metering needs in multi-tenant and commercial facilities, delivering reliable metering across 200A circuits with a robust copper bus. Its five-jaw sockets and 120/208Vac capability facilitate straightforward field wiring, reducing enclosure count and integration time while maintaining safety with UL Listed certification.
The product is UL Listed, confirming compliance with safety standards for electrical equipment used in metering and distribution. UL listing supports reliable performance in outdoor applications and aligns with NEC wiring practices. For procurement, this certification shortens validation steps for electrical contractors and reduces risk during commissioning. UL Listed also supports ongoing maintenance and serviceability.
Eaton provides a standard warranty per policy 25-000, offering one year from the date of installation or eighteen months from shipment, whichever occurs first. This coverage supports field support, replacement parts, and documentation updates. For high-availability projects, consider extending coverage and accessing Eaton technical resources and catalogs for configurations as needed.