Eaton 3MM220R12RLB Residential Meter Stack - UL Listed
Part Number: 3MM220R12RLB
Quick Summary
The Eaton 3MM220R12RLB residential meter stack is a multiple-metering enclosure for outdoor electrical service distribution. For engineers and procurement teams, coordinating meters across tenants often means extra space, extended lead times, and field rework. UL Listed certification supports safety compliance, while the outdoor-rated design and 200A service capability address real-world site conditions and load requirements. Beyond compliance, this solution reduces installation complexity and procurement risk, delivering predictable performance and faster project turnover through standard Eaton metering components. This combination of reliability and ease of integration helps teams meet budget and schedule targets.
Product Information
Extended Description
3MM220R12RLB Eaton: Eaton 3MM residential meter stack, Multiple metering, 200A, Al, Bus:1200A, Horn by, Outdoor, Depends on selected MCB, 5-jaw, Sockets:2, 3-ph in, 1-ph out, A-B, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ringless, Socket:200A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM220R12RLB
UPC
782114786345
Product Length/Depth
13.5 in
Product Height
52.35 in
Product Width
7.01 in
Product Weight
70 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 - 3MM220R12RLB
Feature → Business Impact → Application: Multiple metering type enables shared service provision and reduced enclosure footprint, cutting space needs and installation time while enabling precise sub-metering for each tenant. Application: ideal for multi-tenant residential or light commercial sites seeking centralized metering. Feature → Business Impact → Application: Outdoor-rated enclosure provides weather-resilient protection for critical electrical devices, reducing maintenance cycles and avoiding weather-related faults. Application: exterior installations where enclosure integrity is essential. Feature → Business Impact → Application: 200A service with a 1200A bus supports mid-range load distribution, enabling compliant distribution without oversized housing. Application: mid-size buildings needing robust service capability. Feature → Business Impact → Application: 2 sockets and a fifth jaw included at 9 o’clock position allow flexible conductor configurations and easier retrofits. Application: efficient integration with existing MCBs and metering hardware. Feature → Business Impact → Application: 120/208Vac operation ensures compatibility with common building voltages, simplifying wiring and tile-in. Application: general residential and light commercial metering. Feature → Business Impact → Application: UL Listed certification and a defined warranty provide procurement confidence, risk reduction, and long-term support. Application: compliant purchasing and predictable maintenance planning.
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FAQs
The Eaton 3MM220R12RLB is designed for outdoor residential and light commercial applications requiring multiple metering. It supports a 200A service with a 1200A bus, 120/208Vac operation, and two metering sockets, making it ideal for multi-tenant buildings, mixed-use facilities, and shared utility scenarios while reducing enclosure footprint and field labor.
Key specifications include Type: Multiple metering, 200A service rating, 120/208Vac, bus rating of 1200A, Sockets: 2, and 3-ph in with 1-ph out. The unit is outdoor-grade and features a fifth jaw included at the 9 o'clock position, which aids in configuring various MCB arrangements and feed setups.
Yes. The 3MM220R12RLB is designed for outdoor use, providing weather-resistant enclosure for metering hardware. It supports outdoor metering configurations common in multi-tenant and light commercial properties, enabling reliable operation in exposed environments while maintaining safety and accessibility.
The unit carries UL Listed certification, indicating conformance to recognized safety standards for electrical enclosures and metering assemblies. UL Listing supports compliance with electrical codes and reduces procurement risk by validating safety and reliability for field installation in residential and light commercial settings.
Plan for a 13.5 in depth, 52.35 in height, and 7.01 in width footprint, with an approximate weight of 70 lb. The catalog notes mention a fifth jaw at 9 o’clock, which aids in adapting to various MCB configurations. Ensure compatible bus, meters, and wiring practices, and confirm outdoor mounting provisions align with local codes and space constraints.