Eaton 3MM412R12RLBCPS Residential Meter Stack - UL Listed
Part Number: 3MM412R12RLC
Quick Summary
Residential meter stack is a compact, modular solution for consolidating multiple meters in 120/208V outdoor installations. This approach addresses the common pain point of wiring complexity and crowded electrical spaces by grouping metering points into a single enclosure. It carries UL Listed safety certification and CPS approval, underscoring compliance in harsh environments while supporting outdoor deployment. As a scalable metering product, it aligns with modern multi-tenant and light commercial needs, delivering faster installation, easier maintenance, and improved utility data management through centralized metering.
Product Information
Extended Description
3MM412R12RLC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Cu, Bus:1200A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:4, Three-phase in, single-phase out, A-B, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412R12RLC
UPC
786685512884
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
63 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 - 3MM412R12RLC
Feature: Multiple metering in a single stack. Benefit: Reduces cabinet footprint and simplifies wiring runs, cutting installation time and on-site labor costs. Application: Ideal for multi-tenant buildings and light commercial facilities where space is at a premium and metering efficiency matters. Feature: 125A sockets with a 1200A bus rating. Benefit: Supports NEC-compliant service entry and robust load management, enabling reliable measurement for high-demand scenarios. Application: Suitable for applications requiring scalable metering without compromising safety or accuracy. Feature: Outdoor-rated enclosure. Benefit: Withstands environmental exposure, minimizing weather-related maintenance and protecting sensitive metering hardware. Application: Outdoor meter stacks in shared electric spaces, rooftops, or parking structures. Feature: 5-jaw configuration and 4 sockets; three-phase in, single-phase out. Benefit: Flexible wiring topology accommodates complex commercial and residential feeders, improving adaptability during retrofits. Application: Enables efficient integration with existing MCB selections and conductor layouts. Feature: CPS approved and UL Listed with catalog notes for fifth jaw at 9 o’clock position. Benefit: Delivers compliance confidence and installation versatility, reducing field modifications. Application: Critical for code adherence in regulated markets and CPS-certified installations. Insight: The unit’s design supports compatibility with Eaton’s metering product family and NEC-based metering strategies, delivering measurable improvements in project timelines and long-term maintenance planning.
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FAQs
Plan for an outdoor-rated enclosure, ensure a secure mounting location with adequate clearance for access and wiring, and verify compatibility with the selected MCBs. The unit features three-phase in and single-phase out capability, a 125A socket configuration, and a 1200A bus rating to support scalable metering in busy facilities.
Yes, it is designed for multiple metering with three-phase input and single-phase output. It uses 125A sockets and a 1200A bus rating, suitable for NEC-compliant metering in outdoor installations and multi-tenant environments.
The unit is UL Listed and CPS approved, providing recognized safety and compliance for electrical installations. These certifications help ensure regulatory adherence, reduce inspection risk, and support robust protection in outdoor metering applications.
Compatibility depends on the selected MCBs, but the design supports various configurations due to its 3P in, 1P out topology and 5-jaw/4-socket arrangement. This flexibility reduces field modification needs and can shorten commissioning time in multi-meter projects.
By consolidating metering points, you reduce cabinet space, simplify wiring, and streamline maintenance. The outdoor-rated enclosure minimizes weather-related downtime, while UL CPS certification ensures compliance, contributing to lower labor costs, faster project delivery, and clearer utility data management over the system’s life cycle.