Eaton 3MM220RRLB Residential Meter Stack - UL Listed
Part Number: 3MM220RRLB
Quick Summary
Eaton 3MM residential meter stack is designed to support multiple metering in outdoor installations for homes and light commercial sites. This solution addresses space constraints and complex wiring by consolidating meters into a single, accessible enclosure. UL Listed certification underpins safety and reliability in harsh outdoor environments, while the modular design supports scalable metering as demand grows. The unit accommodates 200A service with an 800A bus, and is optimized for 120/208Vac systems. By combining robust metering with outdoor suitability, it delivers operational efficiency, improved maintenance workflows, and predictable compliance for modern distributed power architectures.
Product Information
Extended Description
3MM220RRLB Eaton: Eaton 3MM residential meter stack, Multiple metering, 200A, Al, Bus:800A, 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
3MM220RRLB
UPC
786849052348
Product Length/Depth
13.5 in
Product Height
52.35 in
Product Width
7.01 in
Product Weight
6.5 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 - 3MM220RRLB
Feature → Multiple metering capability enables centralized monitoring of several circuits or tenants, reducing enclosure clutter and simplifying system management. Business Impact → Lower upfront enclosure footprint and streamlined maintenance translate to faster commissioning and reduced labor costs. Application → Ideal for multi-tenant residences and small commercial buildings where space is at a premium. Feature → 200A service with an 800A bus supports larger load profiles without frequent upgrades. Business Impact → Delays costly service upgrades and expands headroom for growth. Application → Suitable for evolving outdoor metering schemes in residential developments.Feature → 120/208Vac with 3-ph in, 1-ph out and 5-jaw socket configurations ensures versatile connections. Business Impact → Improves compatibility with common utility feeders and metering modules, shortening install time. Application → Real-world use in mixed-phasing installations for outdoor meters.Feature → Outdoor, ringless enclosure and UL Listed certification deliver reliability in exposed environments and clear safety compliance. Business Impact → Reduces weather-related outage risk and accelerates code-compliant installation. Application → Outdoor outdoor-meter stack deployments for residential and light-commercial sites.Feature → Compatibility with documented meter sockets and CCV2_X/ CVS2_XMM/ CV2_XMM configurations supports flexible scoping and future upgrades. Business Impact → Protects investment with adaptable wiring and plug-and-play metering options. Application → Enables phased metering rollouts without cabinet changes.
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FAQs
For outdoor multi-meter installations, ensure a weather-protected mounting location with adequate ventilation and clearance for service access. Verify compatibility with standard 120/208Vac feeders and confirm the 200A service rating aligns with local utility requirements. Use proper enclosure termination practices and follow UL Listed safety guidelines during wiring and commissioning.
Key specs include a 200A service rating, an 800A bus rating, 120/208Vac operating voltage, and multiple metering capabilities with 3-phase in and 1-phase out configurations. The unit provides two meter sockets and is UL Listed, ensuring safety compliance and reliable outdoor operation in residential and light commercial settings.
This meter stack excels in outdoor installations requiring multiple meters within a single enclosure, such as multi-tenant residential buildings, homeowner associations, and light commercial properties. It reduces cabinet footprint, simplifies wiring, and supports scalable metering while withstanding outdoor conditions.
The 3MM220RRLB carries UL Listed certification, indicating adherence to recognized safety standards for electrical equipment. This certification supports regulatory compliance, facilitates inspections, and enhances buyer confidence for outdoor metering installations in residential and light commercial projects.
By consolidating meters, the unit reduces field labor for inspections and retrofits. Its durable outdoor design lowers weather-related maintenance costs, and its scalability accommodates future metering needs without cabinet changes, delivering lower total cost of ownership and faster ROI for property developers and facilities managers.