Eaton Residential Meter Stack 1MM320RRLB - UL Listed
Part Number: 1MM320RRLB
Quick Summary
Eaton residential meter stack enables multi-meter service connections in outdoor residential installations. From site wiring complexity to utility coordination delays, projects stall without a reliable meter solution. Key certifications include UL Listed safety, an outdoor-rated enclosure, and broad utility approvals for interconnection across IA, IL, MI, PA, NY, NJ, OH, VA, WV, MD. These features translate into faster deployment, reduced commissioning time, and improved energy management for utilities and contractors alike. This solution supports resilient, compliant metering while aligning with terms like metering products and utility-ready infrastructure to deliver business value.
Product Information
Extended Description
1MM320RRLB Eaton: Eaton residential meter stack, Amperage rating: 200A, Bus rating: 800A, Outdoor, Interrupt rating depends on selected main circuit breaker, Single-phase in/single-phase out, Aluminum, 3 Sockets, Ringless with horn bypass, 120/240 Vac
Product Name
Eaton residential meter stack
Catalog Number
1MM320RRLB
UPC
786849052270
Product Length/Depth
7.01 in
Product Height
52.35 in
Product Width
13.5 in
Product Weight
56 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
Utility approvals
IA : Alliant (IP&L and WP&L) WI : Alliant (IP&L and WP&L) IL : Commonwealth Edison (ComEd) / CECHA MI : Consumers Energy MD : First Energy (Potomac Edison) VA : First Energy (Potomac Edison) WV : First Energy (Mon Power) NJ : First Energy (Jersey Central Power and Light) OH : First Energy (Ohio Edison, Toledo Edison, The Illuminating Company) PA : First Energy (Allegheny Power, MET ED, Penelec, West Penn Power) NY : Orange & Rockland Utilities PA : PECO Energy WI : WE Energies / Wisconsin Public Service (WPS) PA : Pennsylvania Power & Light (PPL) NY : Rochester Gas & Electric (RG&E) NY : New York State Electric & Gas (NYSEG) KY : Louisville Gas & Electric/Kentucky Utilities NY : Central Hudson Gas & Electric (CHG&E)
Interrupt rating
Depends on selected main circuit breaker
Enclosure
Outdoor
Bus Rating
800 A
Phase
Single-phase in, single-phase out
Voltage rating
120/240 V
Amperage Rating
200A
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM320RRLB
Outdoor, rugged enclosure supports durable outdoor metering installations, enabling safer and faster field setup with minimal weather-related risk. Business impact: reduced installation time and fewer site rework events, improving project schedules for residential and light commercial projects. Application: ideal for outdoor meter stacks in community developments and retrofits where weather exposure is a concern. The 800 A bus rating and 200 A amperage rating provide scalable capacity, enabling seamless service upgrades without changing enclosures. Business impact: future-proofing to accommodate demand growth and zmulti-meter monitoring. Application: suitable for single-phase in/out setups with 120/240 V supply, aligning with standard residential service. Ringless design with horn bypass minimizes wiring complexity and enhances accessibility, reducing maintenance time and error potential. Application: quick commissioning and simplified troubleshooting during load changes. Utility approvals across major providers ensure expedited interconnection, lowering risk of interconnection delays. Warranty and UL Listed certification support long-term cost containment and regulatory compliance. Application: procurement and asset management benefits for facilities managers and electrical contractors.
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FAQs
Plan for outdoor wall mounting given its 52.35 in height, 13.5 in width, and 7.01 in depth with an estimated 56 lb weight. Ensure proper enclosure clearance, weather protection, and room for three sockets. The unit supports single-phase in/out and requires a suitable main circuit breaker for the interrupt rating, which is dependent on the selected main breaker. Prepare for UL-listed safety compliance and verify utility approvals for interconnection at the installation site.
This model is designed for multiple metering with a 200 A amperage rating and an 800 A bus rating, enabling service connections for more than one meter without changing enclosures. Its outdoor-rated enclosure and three sockets support organized, scalable metering workflows. The single-phase in/out configuration simplifies wiring, while the horn bypass feature reduces wiring complexity and accelerates commissioning in complex multi-tenant or multi-service residential scenarios.
Yes, the 1MM320RRLB is UL Listed, providing recognized safety compliance. It also includes extensive utility approvals across multiple regions and utilities (for example Alliant, ComEd, Consumers Energy, First Energy, NYSEG, and others), which facilitates faster interconnection approvals and reduces permit-related delays in numerous jurisdictions.
Key applications include multi-meter residential and light commercial metering in outdoor environments where weather resistance and service flexibility are required. Benefits include faster installation due to ringless wiring, easier maintenance from accessible design, and regulatory confidence from UL listing and broad utility approvals. The rugged outdoor enclosure, combined with 120/240 V single-phase operation, supports compliant, scalable energy management across multiple services.
The meter stack measures 52.35 inches in height, 13.5 inches in width, and 7.01 inches in depth, with a shipping weight around 56 pounds. Plan for sufficient mounting space, vertical clearance, and structural support to bear the unit’s weight. These dimensions influence enclosure selection, ventilation considerations, and utility interconnection coordination for a reliable, code-compliant installation.