Eaton 3MM520RRLCBUS Residential Meter Stack - UL Listed
Part Number: 3MM520RRLCBUS
Quick Summary
Eaton 3MM520RRLCBUS is a residential meter stack designed for multi-meter installations in commercial and residential power distribution. This compact enclosure consolidates metering points, reducing wiring complexity and saving valuable space in electrical rooms. Operators often struggle with locating, terminating, and maintaining separate meters in crowded panels; a dedicated meter stack streamlines installation and future expansion. The unit carries UL Listed safety certification, aligning with critical safety standards for low-voltage systems. Built for 120/208 VAC service, it supports a 200A socket and an 800A bus rating, enabling scalable metering for 3-phase in and 1-phase out. By standardizing metering in a single enclosure, contractors can deliver faster installs and more reliable energy data to building management.
Product Information
Extended Description
3MM520RRLCBUS Eaton: Eaton 3MM residential meter stack, Multiple meter, 200A, Cu, Bus:800A, No by, Out, Depends on MCB, 5-j, Sockets:5, 3-ph in, 1-ph out, A-B, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ringless, Socket:200A, Incline busway meter, 120/208VAC
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM520RRLCBUS
UPC
782116928170
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 - 3MM520RRLCBUS
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The meter stack provides multiple metering points in a single enclosure with 200A sockets and an 800A bus rating, enabling centralized energy monitoring and reduced field wiring. This translates to quicker commissioning, fewer terminal blocks, and more accurate energy data for property managers and engineers supervising load balancing in multifamily buildings and light commercial projects. Application-wise, it is ideal for multifamily housing, mixed-use developments, and entry enclosures where reliable metering simplifies billing and energy management. Feature → Business Impact → Application: 120/208 VAC compatibility supports common building distributions, reducing the need for voltage conversion and lowering pre-commissioning costs. This feature helps electrical teams meet project timelines while maintaining safety compliance across standard utility services. Application: new construction or retrofit metering projects where space is constrained and future expansion is anticipated. Feature → Business Impact → Application: Ringless busway and incline bus design simplify field terminations and reduce installation time, improving on-site productivity and reducing labor costs. Application: dense electrical rooms or corridor enclosures where accessibility is limited. Feature → Business Impact → Application: UL Listed certification provides procurement confidence and regulatory alignment, helping contractors meet bid requirements with a safety-first approach. Application: bid submissions for government and agency projects where documented compliance matters. Feature → Business Impact → Application: A defined warranty policy (one year from installation or 18 months from shipment) lowers project risk and supports long-term maintenance planning. Application: service contracts and after-sales support for property portfolios seeking predictable total cost of ownership.
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FAQs
The 3MM520RRLCBUS is designed for 120/208 VAC service, supporting 200A sockets and an 800A bus rating. This enables reliable multi-metering in typical residential and light commercial electrical distributions without requiring voltage conversion or special adapters.
It supports multiple metering configurations with 3-phase in and 1-phase out, suitable for scenarios such as multifamily housing and small commercial deployments. The unit is built for scalable metering in a single enclosure, simplifying both installation and future expansion.
The Eaton 3MM520RRLCBUS is UL Listed, confirming compliance with established safety standards for low-voltage electrical assemblies used in residential and light commercial metering applications.
Dimensions are approximately 13.5 in (L) x 6.87 in (W) x 74.96 in (H) with a weight around 106 lb, enabling a tall but narrow footprint suitable for constrained electrical rooms and corridor enclosures.
Warranty follows Eaton policy 25-000: one year from the date of installation or eighteen months from the date of shipment, whichever occurs first, reducing ownership risk and supporting field service planning.