Eaton 3MM412RRLC Residential Meter Stack - UL Listed
Part Number: 3MM412RRLC
Quick Summary
The Eaton 3MM residential meter stack provides multi-metering for multi-tenant residential and light commercial power distribution. This solution helps facilities manage load, reduce wiring complexity, and improve tenant energy visibility. UL Listed safety certification reinforces reliability in outdoor installations while delivering compliant metering data. Designed for scale, it pairs with common MCB configurations and 125A sockets to support growth. Engineers benefit from clear energy data, faster commissioning, and safer outdoor installations. In practice, it supports three-phase in, single-phase out configurations and 120/208 VAC systems for reliable utility interconnection. Its modular design aligns with Eaton's metering catalog and enables seamless expansion as building portfolios grow.
Product Information
Extended Description
3MM412RRLC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Cu, Bus:800A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:4, Three-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
3MM412RRLC
UPC
782114990803
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
63 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 - 3MM412RRLC
Multiple metering capability enables independent monitoring of each unit within a single enclosure, using 125 A service with an 800 A bus. This directly reduces capex by eliminating the need for separate panels per tenant while enabling precise billing and energy management across properties. Ideal for multi‑tenant residential and light commercial projects, it supports granular energy data collection without compromising space or install time. Outdoor-rated enclosure and a five-jaw connection simplify field wiring and protect equipment from weather, improving reliability and reducing maintenance calls. Ringless sockets and four 125 A sockets speed up installation and minimize mis-wiring risks, delivering consistent protection for feeder circuits. This configuration is particularly advantageous for exterior meter stacks at multi-dwelling communities where weather exposure is a concern. Three-phase in, single-phase out capability combined with 120/208 VAC compatibility supports mixed loads and utility interconnection, reducing the need for additional distribution gear. The ability to handle diverse tenant loads improves energy monitoring accuracy and helps building managers optimize power usage. This setup aligns with common electrical standards in many regions, facilitating smoother commissioning. Compatibility depends on the chosen MCB, offering flexibility to tailor protection levels while maintaining inventory efficiency. This approach helps electrical engineers design protective schemes around existing Eaton components, reducing spare part costs and accelerating procurement. In practice, installers appreciate the clear, modular interface that speeds on-site testing and commissioning. UL Listed certification underpins safety and regulatory compliance, while Eaton's warranty policy provides coverage for one year from installation or 18 months from shipment. These assurances reduce risk during early operation and support lifecycle maintenance planning. For project teams, this combination translates into predictable performance and long‑term reliability. From a service and maintenance perspective, the meter stack offers reliable metering data and straightforward access for routine checks, with modular components that simplify upgrades as requirements evolve. For system integrators, the design supports scalable energy analytics and reporting workflows, helping meet energy management and sustainability goals.
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FAQs
The 3MM412RRLC supports multiple metering with 125 A service and 120/208 VAC, and compatibility depends on the chosen Eaton MCBs. It offers three-phase in and single-phase out configurations, enabling integration with common Eaton protection schemes and reducing the need for additional distribution gear.
The product is UL Listed, which validates safety and compliance with recognized standards. This certification simplifies procurement for regulated facilities and supports safe outdoor installations when used with appropriate protection and enclosures.
Key benefits include true multi-metering in a single enclosure, reduced capital expenditure by avoiding multiple panels, faster installation thanks to four sockets and five-jaw connections, and improved energy visibility for tenants, all while maintaining compatibility with common distribution practices.
Plan for outdoor enclosure deployment, weather exposure, and secure mounting. The five-jaw connectors and four 125 A sockets simplify wiring, while three-phase in and single-phase out support mixed tenant loads and streamlined commissioning in exterior installations.
Eaton provides a warranty under policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first, offering protection during the initial operation period and post-shipment lifecycle considerations.