Eaton 3MM320RRLBCPS Residential Meter Stack - UL Listed
Part Number: 3MM320RRLBCPS
Quick Summary
Eaton 3MM320RRLBCPS residential meter stack enables multi-meter monitoring for residential buildings. It helps engineers and procurement teams overcome space constraints, wiring complexity, and future expansion challenges. UL Listed certification ensures electrical safety and compliance across installations, reinforcing reliability in critical utility spaces. This metering solution aligns with modern power management strategies, delivering scalable residential metering products and simplified installation workflows. With a catalog-friendly footprint and clearly labeled wiring paths, it speeds commissioning and minimizes downtime for building-services teams. Designed for compatibility with standard residential electrical distribution systems, it supports 3-phase in and 1-phase out configurations. Customers benefit from accurate meter data, simplified warranty coverage, and a scalable platform that accommodates additional meters as building portfolios grow.
Product Information
Extended Description
3MM320RRLBCPS Eaton: Eaton 3MM residential meter stack, SS meter guides, Multiple meter, 200A, Al, Bus:800A, Horn bypass, Out, Depends on MCB, 5-j, Sockets:3, 3-ph in, 1-ph out, A-B, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ringless, Socket:200A, 120/208V
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM320RRLBCPS
UPC
786685525815
Product Length/Depth
13.5 in
Product Height
52.35 in
Product Width
7.01 in
Product Weight
65 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
Special features
SS meter guides
Type
Multiple metering
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM320RRLBCPS
Feature: Multi-meter capability with a fifth jaw included at the 9 o'clock position. Business Impact: Enables centralized metering for multi-tenant loads, reducing enclosure count and enabling smoother feeder expansion. Application: Ideal for residential stack installations where future growth is anticipated and quick changes are common. Feature: SS meter guides. Business Impact: Improves alignment and reduces wiring errors during installation, cutting service calls and improving data integrity. Application: Critical in dense panel layouts or retrofit projects where precision matters for metering accuracy. Feature: Compact, purpose-built footprint. Business Impact: Conserves space in utility rooms and mechanical spaces, facilitating faster field routing and improved balancing of adjacent equipment. Application: Suitable for retrofit or new-build projects with tight footprint constraints. Feature: 200A socket capability with 120/208V operation. Business Impact: Supports standard residential service voltages and high-load metering without additional gear, lowering total installed cost. Application: Residential and light commercial metering where single/dual feeders are common. Feature: 3-phase in, 1-phase out with bus:800A and socketed design. Business Impact: Enables flexible supply configurations and simplified feeder management, reducing commissioning time. Application: Multi-meter service feeders in apartment complexes and small campuses. Feature: UL Listed and catalog notes (fifth jaw included). Business Impact: Delivers compliance confidence and straightforward procurement with known installation references. Application: Compliance-focused projects and standardization across portfolios.
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FAQs
When planning installation, verify available footprint to accommodate the 13.5 inch depth, 52.35 inch height, and 7.01 inch width. Note the 65 lb weight for handling and the fifth jaw provision at 9 o'clock. Expect to connect 200A socket configurations, ensure 120/208V compatibility, and leverage SS meter guides to minimize wiring errors. The UL Listed rating supports compliance reviews.
The design supports multiple metering with a dedicated bus rating up to 800A and sockets configured for 200A service. It enables 3-phase in and 1-phase out configurations, streamlining feeder management and data collection from several meters within a single stack. This simplifies tenant metering, utility accounting, and energy analytics for multi-tenant structures.
Yes, the 3MM320RRLBCPS is UL Listed, indicating adherence to recognized electrical safety standards. It is backed by Eaton’s warranty policy 25-000, providing one year from installation or eighteen months from shipment, whichever occurs first, giving installers confidence in long-term performance and serviceability.
Compatibility centers on standard residential distribution layouts and compatible wiring schemes. The catalog note confirms a fifth jaw is included at the 9 o'clock position, aiding specific panel configurations. This simplifies ordering and reduces additional components, while the clean labeling and SS meter guides minimize wiring mistakes during field assembly.
The stack reduces enclosure clutter by consolidating meters, lowers field labor through faster commissioning, and improves data accuracy with precise meter guides. Its UL Listed status supports regulatory compliance, while scalable metering supports portfolio growth without frequent hardware refreshes, contributing to lower total cost of ownership and faster time-to-value for energy-management initiatives.