Eaton 3MM520RCBUS Residential Meter Stack - UL Listed
Part Number: 3MM520RCBUS
Quick Summary
Eaton 3MM520RCBUS residential meter stack provides multi-metering for 200A service entrances in residential and light commercial applications. This compact, pre-assembled solution helps streamline panel design by consolidating meters in a single enclosure, reducing wiring clutter and installation time. Engineers often face space constraints and complex wiring when adding multiple meters; this unit offers a clean, scalable platform that simplifies distribution and service management. UL Listed certification ensures electrical safety compliance and helps meet code requirements in key markets, while the integrated busway main supports quick, reliable bus connections. The design favors compatibility with standard MCBs and 120/208V systems, enabling faster commissioning and improved operational visibility. This translates to lower installed costs and improved maintenance planning for utility-scale or multi-tenant projects.
Product Information
Extended Description
3MM520RCBUS Eaton: Eaton 3MM residential meter stack, Multiple meter, 200A, Cu, Bus:800A, No, Outd, Depends on selected MCB, 5-j, Sockets:5, 3-ph in, 1-ph out, A-B, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ring, Socket:200A, Incline busway main, 120/208V
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM520RCBUS
UPC
782116928163
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 - 3MM520RCBUS
Feature: Multi-metering capability for 200A service with a single enclosure. Business Impact: Reduces panel complexity and wiring hours, delivering faster project turnaround. Application: Ideal for multi-tenant dwellings and light commercial installations. This supports improved meter data visibility and centralized control while lowering installation risk. Feature: 800A bus rating and five meter sockets. Business Impact: Supports scalable metering configurations without needing supplementary enclosures, reducing capital expenditure and footprint. Application: Suitable for discrete utility feeds and shared service entries in mixed-use buildings. Feature: 120/208V operation with copper bus components. Business Impact: Ensures reliable voltage compatibility and robust, low-resistance connections that minimize losses. Application: Common in North American residential/commercial contexts, enabling seamless integration with standard MCCBs and distribution gear. Feature: Incline busway main and ring/socket design. Business Impact: Speeds field wiring and simplifies future maintenance, improving uptime and serviceability. Application: Facilitates faster commissioning in new builds and retrofit projects. Feature: UL Listed certification and Eaton warranty (25-000). Business Impact: Provides safety assurance, code compliance, and post-sale support, reducing risk and maintenance surprises. Application: Essential for regulated markets and long-term asset management in electrical distributions.
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FAQs
When installing the 3MM520RCBUS, plan for a single enclosure that houses multiple meters, a 200A service capability, and a copper bus design. Verify compatibility with 120/208V systems, ensure proper clearance for the 74.96 in height and 6.87 in width, and confirm UL Listed compliance for local code requirements. Allow for the incline busway main routing to optimize field wiring and future metering expansion.
The unit provides multiple metering with five meter sockets and supports three-phase in with one-phase out. This arrangement enables shared-service configurations and individual meter monitoring for each tenant or load, while maintaining a compact footprint. The 800A bus rating supports scalable distribution, and copper bus components improve connection reliability and data accuracy for metering systems.
Yes, the 3MM520RCBUS is UL Listed, indicating it has been tested and certified for electrical safety and performance per recognized standards. UL Listing helps streamline code compliance reviews, enhances safety assurances for occupants, and supports acceptance by electrical inspectors in many jurisdictions, reducing installation risk and rework.
Key benefits include a consolidated enclosure reducing wiring complexity and panel space needs, faster installation due to the incline busway main, and improved data visibility from centralized metering. The unit’s 200A service capability and 120/208V compatibility support reliable operation, while the UL Listed certification and warranty provide long-term maintenance assurance and asset protection.
The 3MM520RCBUS is designed to interface with common MCCBs and standard 120/208V distribution gear, offering easy field wiring and scalable metering. Its five-socket configuration supports future tenant expansions without requiring additional enclosures. The incline busway main simplifies routing, and the unit’s robust copper bus construction ensures low resistance paths for reliable metering data during upgrades.