Eaton 3MM520RRLBUS Residential Meter Stack - UL Listed
Part Number: 3MM520RRLBUS
Quick Summary
The Eaton 3MM520RRLBUS residential meter stack is a multi-meter enclosure for service entrances in residential and light commercial buildings. When meters must be grouped and labeled in tight spaces, traditional panels slow installation and complicate ongoing maintenance. UL Listed safety certification supports compliant residential metering, backed by Eaton warranty policies and adherence to industry standards. This stack is designed to streamline procurement and installation for electrical contractors, offering space-efficient metering with scalable capabilities and dedicated bus connections that align with common building practices and code requirements.
Product Information
Extended Description
3MM520RRLBUS Eaton: Eaton 3MM residential meter stack, Multiple meter, 200A, Al, Bus:800A, Horn, 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
3MM520RRLBUS
UPC
782116883899
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 - 3MM520RRLBUS
Selling Policy 25-000 - Distribution and Control Products and Services
Feature The 3MM520RRLBUS provides high-density, multi-metering in a single enclosure, enabling faster construction and reduced on-site wiring errors. Benefit This translates to measurable time savings during installation and improved reliability for service entrances, reducing field calls and rework. Application Ideal for residential and light commercial projects where multiple meters must be consolidated without sacrificing accessibility or labeling clarity. Feature The unit supports 200A socket connections with a bus rating up to 800A and 120/208Vac operation, delivering robust electrical distribution within a compact footprint. Benefit Operators gain consistent voltage delivery and safer load management, while installers enjoy standardized connections that simplify commissioning. Application Best suited for multi-meter installations in apartment buildings, data centers with localized metering, and small commercial sites. Feature The enclosure accommodates five sockets and offers 3-phase in, 1-phase out configuration, plus A-B and CCV2_X, CVS2_XMM, CV2_XMM, CVH2_XMM terminals for flexible metering arrangements. Benefit This provides granular measurement and easy substitution of meters as needs evolve, supporting regulatory reporting and energy management initiatives. Application Utilities and building operators can adapt to changing metering requirements without replacing the entire stack. Feature The incline busway meter design and installation-friendly dimensions (13.5 in depth, 6.87 in width, 74.96 in height) support straightforward integration into existing electrical rooms. Benefit The substantial height accommodates multiple meters while maintaining service clearance, reducing the risk of heat buildup and simplifying labeling and verification. Application Suitable for retrofit projects and new builds where space planning is critical. Feature The product ships with documented warranty (1 year from installation or 18 months from shipment) and UL Listed certification, providing risk mitigation for long-term operations. Benefit This assurance reduces total cost of ownership and supports maintenance planning. Application Procurement teams can factor predictable support into budgeting and lifecycle planning.
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FAQs
The 3MM520RRLBUS is designed to integrate with Eaton's meter stack architecture and compatible busways. It supports a 200A socket arrangement, 3-phase in and 1-phase out configurations, and a 74.96 in tall enclosure that fits standard electrical rooms. Before installation, verify feeder conductors, labeling, and space for service clearance. The unit is UL Listed, which simplifies compliance documentation and inspector acceptance.
Key specs include a 200A socket capability, bus rating up to 800A, and operation at 120/208Vac. It is a multiple metering system with five sockets and supports 3-phase in and 1-phase out, along with multiple metering connector options (A-B, CCV2_X, CVS2_XMM, CV2_XMM, CVH2_XMM). These features enable precise energy measurement, improved load management, and scalable metering for evolving electrical systems.
Yes. The unit is specifically marketed as a residential meter stack for multi-meter configurations, ideal for apartment complexes, small commercial sites, and light commercial properties. It integrates with residential metering products and is documented within Eaton’s Residential and Light Commercial Metering Product literature. Its UL Listed certification supports compliance with safety standards for building service entrances.
The 3MM520RRLBUS carries UL Listed certification, ensuring alignment with recognized safety standards for electrical equipment. Warranty coverage follows Eaton’s Selling Policy 25-000, offering one year from installation or 18 months from shipment, whichever occurs first. This provides a clear framework for service and replacement considerations during the product lifecycle.
The design emphasizes compact vertical footprint and integrated labeling capability, accommodating multiple meters in a single enclosure while keeping individual meters accessible. With five sockets and clearly differentiated metering channels, technicians can reduce labeling errors and streamline verification during commissioning. If space is constrained, consult the enclosure dimensions (13.5 in depth, 6.87 in width, 74.96 in height) during site planning to ensure proper fit and service clearance.