Eaton 3MM320RRLBC Residential Meter Stack - UL Listed
Part Number: 3MM320RRLBC
Quick Summary
Eaton 3MM320RRLBC Residential Meter Stack enables multiple metering in outdoor residential panels. This arrangement simplifies utilities' demand-side metering by consolidating meters in a single enclosure, reducing wiring complexity and space needs. UL Listed certification supports safety and code compliance for outdoor use, with a 200A service, copper conductors, and an 800A bus rating. Designed for outdoor applications, it integrates with 3-ph in, 1-ph out configurations and compatible MCBs, helping reduce installation time and lifecycle costs. For engineers and procurement teams, it pairs well with broader metering product families to streamline project scope and ensure reliable, scalable metering across multiple units.
Product Information
Extended Description
3MM320RRLBC Eaton: Eaton 3MM residential meter stack, Multiple metering, 200A, Cu, Bus:800A, Horn bypass, Outdoor, Depends on selected MCB, 5-j, Sockets:3, 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
3MM320RRLBC
UPC
782114990766
Product Length/Depth
13.5 in
Product Height
52.35 in
Product Width
7.01 in
Product Weight
69 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 - 3MM320RRLBC
Feature: Multiple metering capability supports 3-ph in, 1-ph out with a 200A service and 800A bus rating. Business Impact: Enables centralized, per‑unit energy tracking while reducing panel count and wiring complexity. Application: Ideal for outdoor residential and light commercial projects seeking scalable, code‑compliant metering. The 3MM320RRLBC delivers accurate revenue metering across units, minimizing field adjustments and reconnection costs. Feature: Outdoor, rugged enclosure and copper conductors. Business Impact: Improves reliability in harsh environments and supports long service life with low maintenance. Application: Suitable for exposed outdoor installations in apartment complexes or mixed-use developments. Feature: 3 sockets with horn bypass and ringless, 5-j connectors. Business Impact: Simplifies installation sequencing and reduces component footprint while maintaining service continuity. Application: Compatible with standard MCB configurations and Eaton metering products for quick integration. Feature: UL Listed certification. Business Impact: Supports safety compliance and reduces regulatory risk, enabling faster project approval. Application: Essential for building codes and utility requirements in residential developments. Feature: Compatibility with metering product families. Business Impact: Streamlines procurement and reduces total cost of ownership through standardized components. Application: Bridges outdoor meter stacks with broader Eaton low‑voltage distribution solutions.
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FAQs
The 3MM320RRLBC is designed for outdoor residential metering with 200A service and a copper bus rated to 800A, featuring 3-phase in and 1-phase out. It fits standard outdoor enclosures and pairs with Eaton MCB configurations, simplifying retrofit projects and new installations alike. Verify enclosure dimensions (13.5 in depth, 7.01 in width, 52.35 in height) and ensure the panel supports 120/208Vac operation.
This meter stack supports multiple metering with 3 sockets and a 3‑phase in, 1‑phase out arrangement, enabling versatile metering for multi‑unit dwellings or mixed-use sites. The 200A socket rating and outdoor-ready design help streamline installation while maintaining reliable service across phases and feeders.
Yes, the 3MM320RRLBC is designed for outdoor installations. It carries UL Listed certification, ensuring compliance with safety standards for electrical equipment used in outdoor metering applications. This certification supports code adherence during inspections and reduces project risk for residential and light-commercial metering deployments.
The unit operates at 120/208Vac and uses copper conductors. Its design accommodates outdoor environments and provides a robust 800A bus rating, which supports scalable metering across multiple utility feeders while maintaining electrical integrity and safety.
The product aligns with Eaton’s warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever comes first. This coverage supports field reliability and provides a clear framework for parts replacement and service needs during the initial period after installation.