Eaton 3MM512RRLB Meter Stack - 125A, 3-Ph In/Out UL Listed
Part Number: 3MM512RRLB
Quick Summary
Eaton 3MM512RRLB Meter Stack is a residential multi-meter solution designed for outdoor power distribution. Engineers and installers often struggle with space constraints, accessibility, and meeting metering codes in compact residential enclosures. Key certifications and approvals include UL Listed; utility approvals from Atlantic City Electric / Delmarva Connectiv for DE, MD, and NJ. For business value, this meter stack supports scalable energy management, reliable outdoor installations, and simplified approval processes. With outdoor-rated construction and configurable metering options, the 3MM512RRLB supports site-specific metering requirements and future expansion. The Eaton warranty policy provides confidence across project lifecycles, complementing installation best practices and serviceability.
Product Information
Extended Description
3MM512RRLB Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Al, Bus:800A, Horn bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:5, 3-phase in, single-phase out, A-B, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM512RRLB
UPC
786849052324
Product Length/Depth
12.26 in
Product Height
57.5 in
Product Width
7.01 in
Product Weight
58 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
DC : Atlantic City Electric / Delmarva (Connectiv) DE : Atlantic City Electric / Delmarva (Connectiv) MD : Atlantic City Electric / Delmarva (Connectiv) NJ : Atlantic City Electric / Delmarva (Connectiv)
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM512RRLB
This residential meter stack delivers a targeted feature-to-benefit trajectory designed for practical, real-world installations. Outdoor-rated construction reduces weather-related risk and downtime, while UL Listed certification reinforces compliance and safety across municipal enclosures, lowering total cost of ownership. The 125A service with 3-phase in and single-phase out supports scalable energy management for multi-tenant properties, enabling precise load distribution and simplified billing. Five-jaw sockets and ringless connections provide flexible wiring options, facilitating faster commissioning and reduced field labor. Compatibility with multiple BR series configurations and up to an 800A bus ensures future-proofing for load growth and code updates. Utility approvals from Atlantic City Electric and Delmarva support project sign-off, shortening procurement cycles and minimizing operational delays. Overall, the enclosure footprint (12.26 in L, 57.5 in H, 7.01 in W) optimizes space in outdoor meter cabinets while maintaining robust mechanical integrity.
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FAQs
The 3MM512RRLB is designed as an outdoor residential meter stack with 125A service, 3-phase in, single-phase out, and five-jaw sockets. It fits typical multi-meter installations and supports ringless wiring with a 120/208 VAC configuration. Installation requires mounting in a weather-rated enclosure and adherence to utility approvals; the unit weighs 58 lb with dimensions of 12.26 in (L) x 57.5 in (H) x 7.01 in (W).
The 3MM512RRLB provides a 125A service with 3-phase in and single-phase out, designed for 120/208 VAC operation. It includes five-jaw sockets and a bus rating of 800A, enabling multiple metering configurations. Outdoor suitability and compatibility with various MCB options are noted, with performance dependent on the selected protection devices.
Yes, the Eaton 3MM512RRLB is UL Listed. Utility approvals include Atlantic City Electric / Delmarva (Connectiv) for Delaware, Maryland, and New Jersey, enabling smoother acceptance in utility-led projects and faster commissioning in outdoor residential metering deployments.
The product is covered under Eaton’s policy 25-000, with a one-year warranty from the date of installation or eighteen months from the date of shipment, whichever occurs first. This warranty supports field reliability for residential metering enclosures and provides recourse for manufacturing defects or early-life failures.
The meter stack measures 12.26 inches in length, 57.5 inches in height, and 7.01 inches in width, with an approximate weight of 58 pounds. These dimensions and weight inform outdoor mounting footprints and serviceability during installation or future upgrades.