Eaton 3MM512RRLBC Residential Meter Stack - UL Listed
Part Number: 3MM512RRLBC
Quick Summary
The Eaton 3MM512RRLBC residential meter stack provides multi-metering for centralized load management in multi-unit buildings. Engineers face wiring complexity, outdoor deployment challenges, and slow metering cycles; this unit simplifies installs with outdoor-ready housing and robust connection options. Key certification is UL Listed, confirming safety and compliance for commercial-residential applications. The design supports 125A service with Cu bus and 800A bus, enabling scalable metering pathways for new builds or retrofits. With 3-phase in and single-phase out, it aligns with modern energy-management strategies while offering reliable, low-maintenance operation across outdoor installations. This makes it a compelling choice for property managers and electrical engineers seeking efficiency, compliance, and rapid deployment.
Product Information
Extended Description
3MM512RRLBC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Cu, Bus:800A, Horn bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:5, 3-phase in, single-phase out, B-C, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM512RRLBC
UPC
782114990858
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 - 3MM512RRLBC
Feature: Multi-metering in a single stack enables centralized load management. Benefit: Reduces field wiring complexity and accelerates installation timelines, translating into lower labor costs for developers and stronger billing accuracy for utilities. Application: Ideal for multi-dwelling and light commercial projects seeking scalable metering infrastructure. Feature: Outdoor-ready enclosure with established metering pathways. Benefit: Enhances reliability in harsh environments while minimizing enclosure upgrades, supporting quicker commissioning. Application: Perfect for outdoor meter banks at residential complexes and retail properties. Feature: 125A service with Cu bus and 800A bus architecture. Benefit: Provides robust electrical capacity with room for growth, improving service reliability and future expansion. Application: Retrofit and new-build metering where modularity and safety are critical. Feature: Five-jaw sockets and five-ted socket configuration plus 3-phase in, single-phase out. Benefit: Enables flexible connection schemes compatible with common distribution boards, reducing adapter hardware and installation time. Application: Installations requiring precise metering granularity and straightforward segmentation of loads. Feature: 120/208 Vac operation and UL Listed certification. Benefit: Ensures compatibility with standard residential/commercial electrical systems while meeting safety and regulatory requirements. Application: Compliance-driven projects where safety and performance audits are routine. Feature: Modular compatibility with MCB options and optional bypass/silencing features. Benefit: Allows tailored metering layouts with minimal field rework, lowering project risk. Application: New builds and retrofit programs where specific breaker configurations are needed for load diversity.
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FAQs
The 3MM512RRLBC is designed for outdoor residential and light commercial metering installations, supporting multi-unit buildings with centralized metering. Its outdoor-ready enclosure and five-jaw sockets simplify mounting on external walls or dedicated meter enclosures, while the 125A service accommodates typical multi-tenant loads. This makes it a practical choice for property developers and facilities teams seeking durable, scalable metering solutions.
Key specifications include a 125A service with Cu bus capable of 800A, five-jaw sockets, 3-phase in and single-phase out, and 120/208 Vac operation. The unit is UL Listed, has a 125A socket rating, and supports standard residential/commercial distribution configurations, enabling straightforward integration with common MCBs and panel boards.
Yes, the 3MM512RRLBC is UL Listed. This certification confirms adherence to recognized safety standards for electrical equipment, reducing compliance risk in inspections and audits. For projects in regulated markets or with strict safety policies, UL Listing provides assurance that the meter stack meets essential electrical safety and performance criteria.
The multi-metering capability consolidates metering paths into a single stack, improving measurement accuracy and billing transparency across tenants. It reduces wiring and termination points, lowers labor for meter reads and maintenance, and supports efficient energy management strategies such as load profiling and anomaly detection within multi-tenant buildings.
Compatibility depends on the selected MCBs; the unit uses five-jaw sockets and supports a 125A socket, with 3-phase in and single-phase out configurations. Plan for compatible breakers and ensure the MCB choice aligns with the bus ratings (800A) and the 120/208 Vac supply. This minimizes rework and ensures reliable metering pathways from the outset.