Eaton 3MM512RRLC Residential Meter Stack - UL Listed
Part Number: 3MM512RRLC
Quick Summary
The Eaton 3MM512RRLC is a residential meter stack that consolidates multiple metering for outdoor service panels. For utilities and contractors, coordinating several meters in tight outdoor spaces is a frequent challenge, often leading to longer installation times. UL Listed certification confirms safety and compliance for residential distribution equipment. This solution integrates with Eaton metering products and MCB configurations, delivering a tidy footprint, easier field wiring, and scalable capacity. By simplifying multi-meter configurations and outdoor deployment, it enables faster projects, reduced enclosure requirements, and predictable maintenance cycles, supporting efficiency-focused building management and sustainable utility integration for new installations and retrofit projects alike.
Product Information
Extended Description
3MM512RRLC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Cu, Bus:800A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:5, 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
3MM512RRLC
UPC
782114990865
Product Length/Depth
12.26 in
Product Height
57.5 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 - 3MM512RRLC
Feature: Multiple metering enables centralized monitoring of adjacent loads within a single enclosure, reducing equipment footprint and simplifying billable data. Business impact: easier tenant billing, improved energy management, and a cleaner electrical room layout. Application: ideal for multi-tenant residential buildings, mixed-use developments, and master-feeder arrangements in outdoor service cabinets. Feature: 125A service rating with copper conductors and 120/208 VAC operation. Business impact: aligns with common residential/service spec, minimizes upsizing costs, and enhances safety margins in peak-load scenarios. Application: new builds and retrofit projects seeking compliant, ready-to-wire metering solutions in outdoor environments. Feature: Outdoor-rated enclosure and weather resilience. Business impact: reduces maintenance cycles and expands placement options to exterior walls, rooftops, or exterior cabinets. Application: outdoor installations where space is constrained and weather exposure is a consideration. Feature: Five-jaw sockets and flexible topology (three-phase in, single-phase out). Business impact: simplifies distribution design, reduces wiring complexity, and enables straightforward MCB matching. Application: configurable feeders in residential or light-commercial feeders with diverse phase requirements. Feature: UL Listed certification and standard warranty. Business impact: supports compliance documentation, lowers risk, and provides post-sale reliability for project quotes and long-term ownership. Application: procurement confidence for spec-driven projects and ongoing maintenance programs. Feature: Compatibility with Eaton metering products and accessories. Business impact: streamlines procurement, stock management, and spare-part planning, improving install readiness. Application: integration within Eaton’s metering product families in new constructions and retrofits.
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FAQs
The 3MM512RRLC is designed for outdoor residential metering with multiple meters. It supports three-phase in and single-phase out configurations and relies on the chosen MCBs to complete the circuit in the distribution panel. Five-jaw sockets and a 125A service rating enable flexible, code-compliant integration with Eaton MCB families and standard residential gear. Ensure the MCBs selected are rated for 125A and compatible with copper conductors and the outdoor enclosure.
Key specs include a 125A service rating, Cu conductors, five-jaw sockets, three-phase in and single-phase out, and operating voltage of 120/208 VAC. The unit is UL Listed for safety and is intended for outdoor use. These parameters support residential metering with multi-tenant or multi-load configurations while maintaining standard distribution compatibility.
This meter stack excels in outdoor residential and light commercial applications requiring multiple meters in a compact footprint. It is suitable for multi-tenant buildings, master-metering scenarios, and retrofit projects where space is at a premium. The 125A service and five-jaw sockets simplify integration with existing Eaton MCBs and field-wiring practices.
The Eaton 3MM512RRLC carries UL Listed certification, a key indicator of electrical safety and compliance with recognized standards for residential distribution equipment. This helps support code compliance, safety audits, and installer confidence when specifying metering stacks for outdoor use in residential settings.
The product carries Eaton’s warranty policy: one year from installation or eighteen months from shipment, whichever occurs first. This provides a predictable ownership cost and service window for maintenance planning. For ROI, the compact, multi-meter design reduces enclosure needs, speeds field wiring, and lowers labor time in both new builds and retrofit projects.