Eaton 3MM412RACBC Residential Meter Stack - UL Listed
Part Number: 3MM412RACBC
Quick Summary
Eaton 3MM412RACBC residential meter stack provides multiple metering for outdoor power distribution. It’s designed to streamline load management in multi-tenant or mixed residential facilities by consolidating metering in a single enclosure. UL Listed safety certification supports code compliance and safer field installation; for markets requiring CE marking or IP protection, consult Eaton for approved variants. This rugged outdoor meter stack handles three-phase in, single-phase out configurations and supports flexible wiring with four sockets and a five-jaw design, ensuring reliable service entry and easy retrofit. By combining compact footprint with robust capacity, it reduces ongoing monitoring costs while improving tenant visibility and energy-management capabilities.
Product Information
Extended Description
3MM412RACBC Eaton: Eaton 3MM residential meter stack, Multiple meter, 125A, Al, Bus:800A, Horn bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:4, Three-phase in, single-phase out, A-C/B-C, BR2_, BRH2_, BRHH2_, BRX2, Ring, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412RACBC
UPC
782116890750
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
59 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
To change in field from ring to ringless use 1MMRC125T for top socket and 1MMRC125 for other sockets. For indoor applications where a top endwall with knockouts is needed, order (1) of MM12N1WLK., Main tenant feeders can exit bottom or back
Type
Multiple metering
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM412RACBC
Feature: Multiple metering capability in a single stack enables concurrent measurement for several service points. Business Impact: reduces hardware footprint, speeds installation, and lowers field labor by consolidating meters in one enclosure. Application: ideal for multi-tenant residential buildings, small commercial developments, or outdoor utility feeds where shared infrastructure is common. Feature: Outdoor-rated enclosure with 125A sockets and 800A bus supports rugged outdoor operation and scalable capacity. Business Impact: minimizes corrosion risk and service interruptions while simplifying wiring layouts; field changes from ring to ringless are supported via catalog guidance, reducing rework. Application: outdoor wall installations and campus feeder systems needing reliable resilience. Feature: Three-phase in, single-phase out capability provides flexible service topology. Business Impact: enables efficient feeder design and tenant separation without extra cabinets; reduces material costs and installation time. Application: suitable for mixed-use developments with clustered loads and shared infrastructure. Feature: UL Listed certification ensures safety and regulatory compliance. Business Impact: lowers procurement risk, accelerates approval processes, and enhances installer confidence on site. Application: essential for residential and light-commercial meter stacks in regulated environments. Feature: Compatibility with Eaton MCBs and configurable termination options (ring/ringless) enhances install versatility. Business Impact: lowers inventory complexity and speeds commissioning; supports bottom or back exit for tenant feeders. Application: fits with BR series MCBs and common field configurations for tenant-ready installations.
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FAQs
Begin by selecting the mounting location on an exterior wall with adequate ventilation and clearance. Plan the feeders for bottom or back exits, and verify that the selected MCBs are compatible with the five-jaw sockets. If ring-to-ringless configuration is needed, follow catalog notes (1MMRC125T for top socket and 1MMRC125 for others). Ensure the enclosure is secured and weatherproofed, then connect the 120/208 VAC circuits to the four sockets. This approach minimizes field rework and speeds commissioning while maintaining safe, code-compliant installation.
The unit supports multiple metering with three-phase in and single-phase out, which allows grouping loads in a single enclosure. It features four sockets with five-jaw design and 125A sockets alongside a 800A bus for scalable distribution. This makes it suitable for multi-tenant residential or light commercial sites where consolidated metering improves visibility and management while reducing equipment footprint.
Yes, the product is UL Listed, which aligns with standard safety and electrical code requirements for residential and outdoor metering. While UL listing provides a strong baseline for compliance, always verify local codes and utility requirements. Eaton also provides guidance for field configurations to ensure safe, compliant operation, including options for ring and ringless wiring as needed.
Key challenges addressed include outdoor exposure, space constraints, and the need for multi-tenant visibility. By consolidating metering in one enclosure and enabling bottom or back feeder exits, labor time is reduced and commissioning is faster. ROI improves through decreased hardware footprint, simplified maintenance, and improved energy management for tenants, along with safer, code-compliant installations due to UL Listing.
The meter stack measures 12.26 inches in depth, 48.5 inches in height, and 7.01 inches in width, with a product weight of 59 pounds. Plan for a mounting area that accommodates this footprint and allows service access around the enclosure. Ensure unobstructed clearance for top and bottom openings and for ring/ringless wiring configurations as required.