Eaton 3MM220R12RLBC Residential Meter Stack - UL Listed
Part Number: 3MM220R12RLBC
Quick Summary
The Eaton 3MM220R12RLBC residential meter stack is a multi-meter enclosure built for outdoor use in residential and light commercial applications. Engineers and procurement teams often struggle with wiring complexity, space constraints, and meeting evolving metering codes. UL Listed certification provides safety and compliance assurance, while the outdoor-rated design addresses weather exposure. With its multiple metering capability and robust 200A service, the stack simplifies installation, improves reliability, and supports scalable energy management for property portfolios. This solution aligns with cost-containment goals by reducing wiring errors and speeding field assembly, while enabling accurate submetering in distributed systems. Designed for reliability and easy maintenance, it supports rapid replacement and compliance-driven inspections.
Product Information
Extended Description
3MM220R12RLBC Eaton: Eaton 3MM residential meter stack, Multiple metering, 200A, Cu, Bus:1200A, Horn by, Outdoor, Depends on selected MCB, 5-jaw, Sockets:2, 3-ph in, 1-ph out, B-C, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ringless, Socket:200A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM220R12RLBC
UPC
786685512969
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 - 3MM220R12RLBC
Feature → Business Impact → Application: Multiple metering capability enables concurrent energy measurement for separate tenants, improving occupancy-based billing and energy auditing. This reduces manual submetering errors and supports accurate ROI reporting for property managers. Application: residential and light commercial metering projects with shared feeders. Feature → Business Impact → Application: Outdoor enclosure with weather-resistant construction enhances system uptime and reduces corrosion-related downtime. Application: outdoor installations in parking lots, campuses, and multi-family housing developments. Feature → Business Impact → Application: 200A service and 120/208Vac operation provide robust capacity for typical residential feeders while accommodating standard utility voltages. Application: service entrances and subfeed distribution in multi-tenant buildings. Feature → Business Impact → Application: Five-jaw configuration and 1200A bus improve wiring flexibility and fault isolation, accelerating field assembly. Application: rapid deployment in new developments or retrofit projects. Feature → Business Impact → Application: UL Listed certification underpins regulatory compliance and investor confidence. Application: meeting electrical safety standards for metering enclosures. Feature → Business Impact → Application: Catalog notes and compatibility with 3-ph in/1-ph out configurations support seamless integration with Eaton and third-party MCBs. Application: streamlined procurement and reduced design-time for installers.
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FAQs
The 3MM220R12RLBC is designed for outdoor, multi-meter assemblies and accommodates typical Eaton meter stack configurations. When integrating, verify that the enclosure mounting footprint matches standard outdoor pedestals and that the fifth jaw at the 9 o'clock position is installed per catalog notes. Ensure proper clearance for service access and weatherproofing to maintain UL Listed compliance.
This stack supports multiple metering with a 200A service rating and a 120/208Vac operating range, paired with a 1200A bus and 5-jaw sockets. The 3-ph in, 1-ph out arrangement enables efficient distribution to subpanels and meters, minimizing voltage drop and improving accuracy for submetering. Proper wire sizing and panel compatibility are recommended to maximize performance.
Yes, the Eaton 3MM220R12RLBC is well-suited for outdoor, multi-tenant metering needs. Its outdoor-rated housing, UL Listed safety, and multi-meter capability support separate tenant metering and streamlined energy management. For larger complexes, verify enclosure dimensions, accommodate access for maintenance, and coordinate with utility service requirements to ensure scalable installations.
The product is UL Listed, providing recognized safety validation for metering enclosures used in residential and light commercial settings. This certification helps meet electrical safety standards and inspection requirements. Always follow Eaton’s installation guidelines and warranty terms, and reference the UL listing as part of your project’s compliance documentation.
Eaton’s management policy includes a one-year warranty from installation or an 18-month window from shipment, whichever occurs first. For ROI, plan for routine inspections of weather seals, verify UL Listed status, and schedule periodic maintenance to prevent moisture ingress and corrosion. Effective lifecycle management reduces downtime and extends equipment service life.