Eaton 3MM520R12BUS Residential Meter Stack - UL Listed
Part Number: 3MM520R12BUS
Quick Summary
The Eaton 3MM520R12BUS residential meter stack delivers multi-meter power distribution for multi-tenant and light-commercial installations. Engineers often struggle with coordinating meters, space constraints, and wiring safety under tight project timelines. UL Listed certification supports safety and compliance, while a 120/208V service and 200A bus rating meet common utility and code requirements. This solution saves installation time and space, enabling quicker commissioning and ongoing metering management for building owners. The modular design reduces site disruptions and makes future meter upgrades straightforward. By consolidating meters, property managers gain clearer energy accountability and faster variance reporting across tenant spaces. This aligns with energy management goals and reduces operational risk over the life of the installation.
Product Information
Extended Description
3MM520R12BUS Eaton: Eaton 3MM residential meter stack, Multiple meter, 200A, Al, Bus:1200A, 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, Ring, Socket:200A, Incline busway meter main, 120/208V
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM520R12BUS
UPC
786685010854
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 - 3MM520R12BUS
Feature → Multi-meter capability: consolidates metering into a single stack, reducing enclosure count and field wiring. Business Impact: lowers installation time, minimizes errors, and improves site diagnostics by centralizing meter data. Application: ideal for multi-tenant residential towers and light-commercial facilities where meter visibility and expandability matter. Feature → High bus rating: accommodates up to 1200A bus with a 200A socket interface, supporting current growth without rework. Business Impact: improves future-proofing and reduces future retrofit costs. Application: service entrances and main distribution in dense meter assemblies used by property managers and integrators. Feature → Voltage and safety: designed for 120/208V service, UL Listed to safety standards, and rated for versatile metering configurations. Business Impact: helps meet regulatory requirements and simplifies compliance documentation. Application: electrical distribution in mixed-use buildings and commercial suites requiring reliable metering. Feature → Incline busway meter main: simplifies wiring routes and allows quicker field connections with safer, cleaner layouts. Business Impact: lowers labor hours during installation and reduces fault-prone wiring. Application: on-site deployment where space is constrained and rapid commissioning is critical. Feature → Physical specs and warranty: dimensions 13.5 in L, 74.96 in H, 6.87 in W, 106 lb, one-year Eaton warranty. Business Impact: enables precise site planning, predictable shipping, and reliable post-sale support. Application: procurement for new-builds and retrofit projects where reliability matters.
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FAQs
The 3MM520R12BUS supports multiple metering in one stack and uses a 200A socket interface with a 1200A bus, enabling integration with a broad range of Eaton and third-party meters. UL Listed certification helps ensure safety and code compliance, simplifying compatibility checks during procurement.
Plan for its substantial height and footprint: 74.96 in tall, 13.5 in long, and 6.87 in wide, with a 106 lb weight. Incline busway main design eases routing, while a dedicated enclosure and UL compliance reduce field rework and risk during commissioning.
The unit is UL Listed, confirming adherence to recognized electrical safety standards. This certification supports regulatory compliance, safer onboarding, and smoother inspection processes for building projects where metering integrity is critical.
Consolidating meters reduces the number of field connections, cutting labor hours during installation and maintenance. Centralized metering improves energy accounting accuracy and simplifies fault isolation, delivering faster issue resolution and lower total cost of ownership over the building lifecycle.
Multi-tenant residential complexes and light-commercial facilities benefit most, where shared metering, space constraints, and scalable expansion are common. The 120/208V service, high bus rating, and UL Listed safety profile align with typical utility requirements and modern energy-management strategies.