Eaton 3MM412RC2AB Residential Meter Stack - UL Listed
Part Number: 3MM412RC2AB
Quick Summary
Eaton 3MM residential meter stack provides multi-metering for outdoor enclosures. For engineers and contractors, field configurability and space constraints are common pains, often delaying project timelines. UL Listed certification backs the design and safety of outdoor installations, while the five-jaw configuration supports flexible metering with 125 A service. With four sockets, a copper bus rated for robust performance, and three-phase in with single-phase out capability, this stack blends reliability with practical installability. It is well suited for multi-tenant buildings and commercial facilities, delivering code-compliant metering and scalable configuration. The unit’s compatibility with selected MCBs and field-change options helps accelerate deployments and reduce total cost of ownership.
Product Information
Extended Description
3MM412RC2AB Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, 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, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412RC2AB
UPC
782114631980
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
Fifth jaw included at 9oclock position. To change in field from ring to ringless-order 1MMRC125.
Type
Multiple metering
Feature: Multi-metering capability enables shared electrical service in a single enclosure. Benefit: Reduces hardware and installation time while simplifying utility billing across tenants. Application: Ideal for apartment complexes and small commercial properties seeking centralized metering with clear ownership of loads. Long-tail keywords: outdoor metering solution, residential multi-metering, utility-grade metering in outdoor enclosures. Feature: Five-jaw, field-configurable connections with a ring/ringless option (catalog note: order 1MMRC125 for ringless). Benefit: Field configurability minimizes onsite rework and expands installation flexibility, improving project speed and accuracy. Application: Projects requiring adaptable metering configurations without the need for alternate enclosures. Long-tail keywords: field-configurable metering, ringless option, fifth jaw installation. Feature: 125A service with 800A bus rating and 120/208 VAC operation. Benefit: Supports standard commercial and residential loads with ample headroom for future expansion, reducing upgrade cycles. Application: Outdoor meters in mixed-use buildings and small industrial facilities. Long-tail keywords: 125A service meter stack, copper bus, outdoor electrical metering. Feature: Four sockets and copper construction for durability. Benefit: Robust electrical contact and corrosion resistance in harsh environments, improving uptime. Application: Exterior installations in varying climates where enclosure integrity matters. Long-tail keywords: copper bus, outdoor copper construction, durable metering sockets. Feature: Compliance and warranty highlights include UL Listed certification and a one-year warranty from installation (or 18 months from shipment). Benefit: Assurance of safety, quality, and predictable service life, reducing risk for facilities teams. Application: Procurement and facilities planning for ongoing maintenance and compliance reporting. Long-tail keywords: UL Listed metering, Eaton warranty, industry-standard safety certifications.
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FAQs
Installation involves mounting the stack in a weather-rated outdoor enclosure, connecting to the 125 A service with the copper bus, and configuring the sockets for your load. The catalog notes indicate a fifth jaw at the 9 o’clock position and a field-change option to ringless with 1MMRC125. Ensure compliance with local electrical codes and confirm MCB compatibility for the target feeders to optimize safety and performance.
This meter stack supports a 125 A service with an 800 A bus rating and operates at 120/208 VAC. It features multiple metering with three-phase in and single-phase out, four sockets, and copper bus construction. Use with appropriate MCBs to meet load requirements and maintain UL Listed safety standards for outdoor installations.
Yes. The dual or multi-metering capability supports shared utility services in multi-tenant setups. The five-jaw configuration, ring/ringless options, and field configurability enable scalable metering layouts per tenant while maintaining centralized management and compliant safety practices, which helps streamline billing and energy management across units.
The Eaton 3MM412RC2AB is UL Listed, indicating conformance to recognized safety standards for electrical equipment used in outdoor environments. This certification matters for meeting code requirements, utility acceptance, and ensuring reliability in harsh conditions without compromising safety or performance.
The unit’s rugged copper bus, outdoor-rated construction, and UL Listed certification support long service life with reduced maintenance needs. A one-year warranty (or 18 months from shipment) provides initial risk mitigation, while field-configurability and compatibility with common MCBs help lower total cost of ownership by simplifying upgrades and reducing field labor time.