Eaton 3MM520R12RLBUS Meter Stack - UL Listed
Part Number: 3MM520R12RLBUS
Quick Summary
The Eaton 3MM520R12RLBUS residential meter stack is a compact, scalable metering solution for multi-tenant and light-commercial applications. It helps installers avoid space constraints and data gaps by consolidating meters into a single, accessible stack. UL Listed certification ensures safety and compliance in residential metering assemblies. Designed for 120/208V systems with up to 200A service and a 1200A bus, it aligns with utility and contractor standards. This product supports 5-j sockets, 3-ph in, 1-ph out configuration, and configurable MCBs, enhancing fault isolation and ease of installation. In practice, it reduces field labor, improves meter accuracy through standardized connections, and supports compliant metering data collection today.
Product Information
Extended Description
3MM520R12RLBUS Eaton: Eaton 3MM residential meter stack, Multiple meter, 200A, Al, Bus:1200A, Horn, Out, 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, Ringless, Socket:200A, Incline meter, 120/208V
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM520R12RLBUS
UPC
786685010861
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 - 3MM520R12RLBUS
Feature: Multiple metering in a single stack → Business impact: reduces equipment footprint and simplifies tenant billing → Application: ideal for multi-tenant residential and light-commercial buildings. The integrated metering reduces cabinet space and wiring complexity, enabling faster commissioning and more accurate reads. Feature: High current capacity with 200A service and 1200A bus → Business impact: supports current and future load growth while maintaining measurement integrity → Application: suitable for evolving properties and mixed-use developments. Feature: 5 sockets with 3-ph in, 1-ph out → Business impact: flexible configuration and fault isolation, reducing downtime during maintenance → Application: commonly deployed where phased metering is required or when retrofitting existing service entrances. Feature: Ringless/socket design and inclusion of incline meter options → Business impact: streamlined installation and safer, cleaner wiring paths → Application: contractors benefit from reduced field adjustments and faster setup. Feature: UL Listed certification and Eaton warranty policy → Business impact: compliance assurance and risk mitigation, backed by a one-year (or 18 months from shipment) warranty → Application: critical in regulated markets and projects with strict procurement standards.
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FAQs
Mounting requires space for a 13.5 inch depth, 6.87 inch width and a tall footprint, with a 74.96 inch height overall. Plan for 200A service and a 1200A bus. Ensure UL Listed product handling and compliance with local electrical codes. Use proper MCB selection based on the chosen configuration to maximize safety and ease of maintenance.
The unit supports 120/208V systems with a maximum 200A service rating and a 1200A bus. It is designed for multiple metering with 3-phase in and 1-phase out configuration, and provides flexible socket options up to 200A. These specs translate to accurate, scalable metering for multi-tenant or light-commercial environments.
Yes. The 3MM520R12RLBUS is expressly designed for multiple metering in residential and light-commercial contexts. Its 5 sockets, 3-ph in/1-ph out layout, and configurable MCBs support independent unit metering while preserving a compact footprint, enabling easier billing, maintenance, and future expansion without replacing the entire metering architecture.
This meter stack is UL Listed, indicating compliance with safety standards for electrical equipment used in residential and similar environments. UL Listed certification helps reduce project risk, supports regulatory acceptance, and simplifies procurement since many utility programs and building codes require UL-compliant metering equipment.
The Eaton warranty policy 25-000 provides coverage for one year from installation or eighteen months from shipment, whichever occurs first. This warranty supports ongoing reliability and aids in budgeting for maintenance. For project-specific support, Eaton’s technical documentation and datasheets offer detailed installation guidance and configuration options.