Eaton 3MM512RACBC Residential Meter Stack - UL Listed
Part Number: 3MM512RACBC
Quick Summary
The Eaton 3MM residential meter stack is a multi-meter enclosure designed for outdoor use in residential and light commercial service entrances. Engineers often grapple with space constraints, wiring complexity, and meeting code requirements in outside meter enclosures, especially when multiple tenants share a single service. This unit is UL Listed and outdoor-rated, supporting multiple metering with a 125A main and an 800A bus, while maintaining compatibility with Eaton BR series sockets. By integrating key metering functions into one compact housing, it delivers reliability, simplified maintenance, and faster install times, reducing field labor and risk. For spec-driven projects, this solution aligns with procurement goals and long-term operation and maintenance strategies.
Product Information
Extended Description
3MM512RACBC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Al, Bus:800A, No bypass, Outdoor, Depends on selected main circuit breaker, 5-jaw, Sockets:5, 3-phase in, 1-phase out, B-C, BR2_, BRH2_, BRHH2_, BRX2, Ring, Socket:125A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM512RACBC
UPC
782116890781
Product Length/Depth
12.26 in
Product Height
57.5 in
Product Width
7.01 in
Product Weight
65 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
Catalog Notes
Fifth jaw included at 9oclock position
Type
Multiple metering
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM512RACBC
Feature: Multiple metering with 125A main and 800A bus enables consolidated metering across units or tenants, reducing cabinet clutter and providing scalable capacity. Business Impact: Improves space efficiency and simplifies tenant billing workflows, supporting accurate energy management in multi-tenant buildings. Application: Suitable for outdoor residential and light commercial installations where shared metering is required. Feature: Outdoor-rated enclosure with UL Listed certification ensures weather resistance and code compliance, lowering the risk of service interruptions. Business Impact: Enhances safety and reduces warranty claims, supporting facility uptime. Application: Outdoor meter stacks exposed to weather in campus or multi-dwelling environments. Feature: Fifth jaw included at 9 o’clock position and five-jaw sockets provide flexible termination and quick field connections, reducing install time. Business Impact: Speeds up commissioning and minimizes wiring errors in dense terminations. Application: Retrofit projects or new builds leveraging BR sockets and 125A main. Feature: Type is Multiple metering with 3-phase in, 1-phase out and 120/208Vac operation, enabling mixed-load configurations. Business Impact: Supports diversified electrical loads, improving balance and protection coordination in complex systems. Application: Mixed residential and small commercial loads at the point of service. Feature: Compatibility with BR, BR2_, BRH2_, BRHH2_, BRX2 sockets and modular design simplify integration with existing Eaton equipment. Business Impact: Lowers replacement risk and reduces procurement complexity by leveraging familiar components. Application: Upgrades or new installations using Eaton BR-series breakers. Feature: Comprehensive specifications (12.26 in depth, 57.5 in height, 7.01 in width, 65 lb) and an outdoor-ready footprint provide precise space planning and on-site logistics. Business Impact: Improves project planning accuracy, reduces transport and handling risks. Application: Field deployment in plant yards, campuses, or remote sites. Feature: Warranty and support through Eaton policy (1 year from installation or 18 months from shipment) plus UL Listed safety assurance. Business Impact: Mitigates risk with clear coverage terms and industry-standard safety credentials. Application: Standard procurement for utilities, contractors, and integrators seeking reliable service documentation.
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FAQs
The Eaton 3MM512RACBC is designed for outdoor use in multi-tenant and light commercial settings, supporting outdoor service entrances with multiple metering. It features a 125A main and an 800A bus, 3-phase in and 1-phase out, and five-jaw sockets, including a fifth jaw at the 9 o'clock position for flexible field connections. This configuration helps streamline installations in campuses, apartment buildings, and commercial complexes while ensuring code-compliant safety and reliable metering. Compatibility with BR series sockets further simplifies integration with existing Eaton equipment and reduces retrofit costs.
Key specifications include a 125A main, 800A bus, 3-phase in / 1-phase out, and 120/208V operation. These parameters support mixed-load scenarios typical in residential‑plus‑light commercial applications, enabling accurate multi-tenant metering without overloading the service. The five-jaw socket design and the included fifth jaw facilitate secure terminations, reducing connection resistance and downtime. For performance, the outdoor-rated enclosure minimizes weather-related risks, ensuring stable operation in outdoor installations.
Yes. The 3MM512RACBC is explicitly designed for outdoor settings and multi-meter load management. Its 125A main with an 800A bus supports multiple metering points, making it well-suited for multi-tenant residential or light commercial properties. The unit’s UL Listed certification confirms safety and compliance, while its compatibility with BR-series breakers and five-jaw sockets streamlines deployment in new builds or retrofits. The outdoor rating and robust dimensions help ensure long-term reliability in exposed environments.
The Eaton 3MM512RACBC carries UL Listed certification, providing recognized safety and compliance for electrical equipment. Warranty terms follow Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever comes first. These protections support project risk management and maintenance budgeting for utilities, contractors, and building owners, while the UL Listing reinforces confidence in code compliance and field performance.
The meter stack consolidates metering into a single outdoor enclosure, reducing cabinet footprint and wiring complexity, which translates to lower labor and maintenance costs during installation and service. Its compatibility with BR sockets and the fifth jaw at 9 o'clock speeds up field work and reduces commissioning time. The UL Listing provides ongoing compliance confidence, helping avoid rework during inspections. Over time, the improved metering accuracy and ease of access contribute to better energy management and potential utility reimbursements for multi-tenant properties.