Eaton 3MM520R12RLBUSC Residential Meter Stack - UL Listed
Part Number: 3MM520R12RLBUSC
Quick Summary
Eaton 3MM residential meter stack measures multiple meters for multi-tenant buildings. This compact metering solution addresses the challenge of coordinating several tenants’ loads while maintaining clear billing and safety. The unit carries UL Listed certification and is designed for 120/208V service with a 200A main, making it suitable for residential metering installations and light commercial applications. By consolidating metering in a single stack, it simplifies wiring, reduces space, and improves accuracy. This approach aligns with industry best practices for power management and distribution, supports scalable metering strategies, and complements other metering products in an integrated electrical infrastructure.
Product Information
Extended Description
3MM520R12RLBUSC Eaton: Eaton 3MM residential meter stack, Multiple meter, 200A, Cu, 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
3MM520R12RLBUSC
UPC
786685513317
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
Catalog Notes
Fifth jaw included at 9oclock position
Type
Multiple metering
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM520R12RLBUSC
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Multiple metering capability enables separate energy measurements for each unit, increasing billing accuracy and tenant accountability. Business Impact: Improves revenue clarity and reduces disputes, while supporting data-driven energy management across properties. Application: Ideal for multi-tenant residential developments and mixed-use buildings where precise sub-metering is required. Across projects, operators see faster commissioning and clearer tenant chargebacks due to dedicated metering channels. Feature: 200A service with a 1200A bus rating provides robust headroom for growth, enabling seamless upgrades or load expansions without swapping hardware. Business Impact: Lower total cost of ownership by delaying equipment refresh cycles and minimizing downtime during capacity upgrades. Application: Suitable for aging infrastructure modernization in apartment complexes and small commercial portfolios. Feature: Five-jaw sockets, 3‑phase in, 1‑phase out configuration, and fifth jaw at 9 o’clock position simplify installation and future maintenance. Business Impact: Reduces field wiring errors and speeds up installation, yielding faster project turnarounds. Application: Common in new builds and retrofits where precise, repeatable connections are critical. Feature: Ringless design, incline meter arrangement, and 120/208V operation enhance mounting flexibility and compatibility with standard electrical panels. Business Impact: Improves fit within retrofit spaces and minimizes rework during panel upgrades. Application: Energy management programs in retrofit campus upgrades and multi-unit dwellings. Feature: UL Listed certification and Eaton warranty policy provide safety assurance and post-sale support. Business Impact: Lowers risk for inspectors and owners while ensuring access to documented service terms. Application: Required by many procurement standards for residential metering equipment and service agreements.
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FAQs
Plan for space in a compact but tall footprint (74.96 in height, 6.87 in width, 13.5 in depth) and account for the 106 lb weight. Note the fifth jaw is included at the 9 o’clock position, aiding bus connections. Ensure 120/208V service is available and a compatible panel is used. UL Listed compliance supports inspectors’ requirements during retrofit or new-build projects.
Yes. It is designed for multiple metering with 200A service and a 1200A bus, featuring five sockets and 3‑phase in with 1‑phase out. This configuration supports separate metering for each tenant unit, improving billing accuracy while reducing wiring complexity. It’s a practical fit for apartment blocks, condo associations, and mixed-use developments seeking scalable energy management.
Verify Catalog Number 3MM520R12RLBUSC, UPC 786685513317, 13.5 in length, 74.96 in height, 6.87 in width, and 106 lb weight. Confirm 200 A current rating, 120/208V operation, and 1200 A bus rating. Check that the unit supports multiple metering with 5-j sockets, 3‑phase in and 1‑phase out, and note the fifth jaw at 9 o’clock for proper mounting.
The Eaton 3MM520R12RLBUSC is UL Listed, providing third‑party safety certification and compliance with recognized standards for electrical equipment used in residential and light commercial metering. UL Listing supports safer installations, smoother inspections, and aligned procurement with safety programs. This certification, along with the device’s robust construction, helps ensure reliability in metering applications across multiple tenants.
Warranty is described as Eaton Selling Policy 25-000, offering one year from the date of installation or eighteen months from the date of shipment, whichever comes first. This provides a clear post‑purchase safety net for commissioning, with access to Eaton’s technical support and documentation. Ensure installation is logged to qualify for warranty terms and consider extended service options for ongoing maintenance.