Eaton 3MM412R12C Residential Meter Stack - UL Listed
Part Number: 3MM412R12C
Quick Summary
The Eaton 3MM412R12C residential meter stack is designed for multiple metering in outdoor residential and light commercial installations. It reduces wiring complexity and footprint by consolidating meters in a single outdoor enclosure, helping installers save time and labor. The unit carries UL Listed certification for electrical safety; CE and IP ratings are not specified in the current data, so verify your regional requirements. With a copper bus, 125A main and 120/208Vac capability, it supports scalable metering while maintaining reliable, code-compliant performance. This translates to faster project turnover and improved maintenance planning for utilities and contractors, with a robust platform for future expansions.
Product Information
Extended Description
3MM412R12C Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, 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, Ring, Socket:125A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412R12C
UPC
786685512877
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
62 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 - 3MM412R12C
Feature: Multiple metering capability in a single outdoor enclosure → Business Impact: Simplifies energy accounting across circuits, reducing hardware and labor costs → Application: Ideal for multi-tenant residential or light commercial buildings and outdoor installations. Feature: Outdoor-rated enclosure design → Business Impact: Enables durable performance in weather-exposed environments, lowering maintenance and replacement risks → Application: Exterior meter stacks on building facades or dedicated enclosures in parking areas. Feature: 125A main with copper bus (1200A bus rating) → Business Impact: Supports current and future load growth, improving expansion potential and lifecycle value → Application: Scalable metering for evolving energy management programs in facilities. Feature: Three-phase in, single-phase out configuration → Business Impact: Reduces wiring complexity and potential miswiring, speeding commissioning → Application: Multi-circuit metering in mixed-phase electrical systems for residential and light commercial sites. Feature: Four sockets and five-jaw design → Business Impact: Secure, versatile connections for various metering schemes, lowering rework → Application: Reliable field wiring for 4-way or multi-branch metering layouts. Feature: UL Listed and documented specifications → Business Impact: Enhances compliance confidence and project approvals, streamlining procurement → Application: Preferred for regulated installations and contractor-grade metering projects. Note: The content uses long-tail terms such as outdoor metering enclosure, residential meter stack, three-phase metering equipment, and 120/208Vac compatibility to support discoverability without compromising technical accuracy.
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FAQs
The 3MM412R12C is specifically designed for outdoor residential metering with a rugged enclosure and copper bus. It supports 120/208Vac service and a 125A main, making it suitable for exterior installations on multi-tenant or light commercial properties.
Key specs include 125A main, copper bus rated to 1200A, 120/208Vac operation, and a three-phase in with single-phase out configuration. Ensure UL Listed certification is recognized by your authority having jurisdiction and confirm outdoor suitability for your climate.
Yes. The unit is designed for three-phase in and single-phase out configurations, with four sockets and a five-jaw design to support secure, reliable connections in mixed-phase metering layouts.
Warranty follows Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This reduces total cost of ownership and supports ongoing maintenance planning.
Choose UL Listed models like the 3MM412R12C for safety compliance, verify outdoor mounting suitability, ensure the enclosure accommodates 125A main and 120/208Vac service, and plan for future metering expansion with its 1200A bus capability.