Eaton 3MM412C2BC Residential Meter Stack - UL Listed
Part Number: 3MM412C2BC
Quick Summary
Eaton 3MM412C2BC residential meter stack provides compact multi-metering for indoor installations in multi-tenant buildings and small commercial facilities. Engineers often grapple with limited space, wiring complexity, and compliance challenges when deploying separate meters. UL Listed certification underpins its safety and reliability in metering applications. By centralizing multiple meters in a single enclosure, this stack reduces field wiring, speeds installation, and supports scalable energy management across tenants, utilities, and building management systems. For contractors and property managers, it enables precise submetering, easier maintenance, and a clear path to tenant billing workflows while protecting asset performance and uptime.
Product Information
Extended Description
3MM412C2BC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, No bypass, Indoor, Depends on MCB, Five-jaw, Sockets:4, Three-phase in, single-phase out, B-C, BR2_, BRH2_, BRHH2_, BRX2, Ring, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412C2BC
UPC
782114631928
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
Type
Multiple metering
Feature: Multiple metering in a single enclosure enables 125A service and 800A bus rating for distributed occupancy loads. Business Impact: Reduces the number of separate meters and simplifies compliance documentation, leading to faster permit approvals and lower installation costs. Application: Ideal for multi-tenant residential buildings and small commercial venues where submetering is required for accurate tenant billing and energy management. Feature: Indoor-rated enclosure with no bypass ensures safer operation and easier service access. Business Impact: Minimizes exposed wiring, improves fault isolation, and simplifies routine maintenance. Application: Building automation and energy monitoring systems benefit from reliable, protected metering in controlled environments. Feature: Four sockets and five-jaw ring provide flexible connection options for up to three-phase inputs with single-phase outputs. Business Impact: Reduces wiring errors and allows straightforward integration with existing MCB-based panels. Application: Submetering for mixed 3P/1P circuits in apartment complexes or commercial suites. Feature: Copper construction with 800A bus and 125A main provides robust current handling and long-term reliability. Business Impact: Enhances safety margins, lowers arc-flash risk, and extends service life in demanding environments. Application: Industrial-grade residential electrical installations demanding durable metering infrastructure. Feature: Dimensions of 48.5 in height, 7.01 in width, 12.26 in depth, and 59 lb weight define a compact footprint for retrofit projects. Business Impact: Fits standard indoor spaces while offering ample mounting room for meters and wiring. Application: Retrofit projects in existing meter rooms with space constraints. Feature: Includes Eaton's warranty and UL Listed certification. Business Impact: Reduces lifecycle risk, ensures regulatory compliance, and provides post-sale support. Application: Confidence for electrical contractors and facility managers during deployment.
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FAQs
Install indoors in a suitably rated enclosure with adequate ventilation and clearance. The unit supports a 125A main with an 800A bus and four sockets, designed for three-phase in and single-phase out configurations. Ensure compatibility with the building's MCBs and follow local electrical codes; refer to the Eaton datasheet for mounting dimensions (48.5 in high, 7.01 in wide, 12.26 in depth) and weight (59 lb) to plan rack space and handling.
Its design consolidates multiple meters into one enclosure, reducing hardware, wiring, and installation time. The 125A service with an 800A bus supports distributed loads across tenants, while four sockets and a five-jaw ring simplify wiring layouts. This setup enables accurate submetering, tenant billing, and scalable energy management for mixed-use properties.
The Eaton 3MM412C2BC is UL Listed, confirming conformance with recognized electrical safety standards for indoor metering equipment. This certification supports regulatory compliance, safer installations, and a lower risk of electrical faults in multi-meter assemblies.
By enabling true submetering of multiple tenants within a single enclosure, it provides precise usage data for tenant billing and energy analytics. The integrated design reduces installation labor, helps maintain consistent metering accuracy, and supports building automation integrations, all contributing to improved energy visibility and cost containment.
Eaton provides a specification sheet and product datasheet for the 3MM412C2BC, including wiring diagrams, dimensions, and compatibility notes. The downloadable Eaton Specification Sheet (PDF) contains installation guidelines, warranty terms, and references to the 25-000 warranty policy, helping technicians plan service and maintenance with confidence.