Eaton 3MM312RC2AB Residential Meter Stack - UL Listed
Part Number: 3MM312RC2AB
Quick Summary
Eaton 3MM312RC2AB residential meter stack provides multi-metering for outdoor service panels. When space is tight and field configurations change, wiring, mounting, and testing can quickly escalate costs and risk. The unit carries UL Listed safety certification to support code compliance for both residential and commercial projects. Designed for outdoor use with copper bus and flexible metering options, it helps owners manage demand and optimize panel space. This configuration supports 120/208 VAC, 125A sockets, and configurable ring options, improving install speed and reliability for multi-tenant or single-family installations and reducing total cost of ownership.
Product Information
Extended Description
3MM312RC2AB Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, No bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:3, 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
3MM312RC2AB
UPC
782114631973
Product Length/Depth
12.26 in
Product Height
41.8 in
Product Width
7.01 in
Product Weight
57 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 1MMRC200.
Type
Multiple metering
Feature → Business Impact → Application: Multiple metering capability enables centralized measurement and billing across units, reducing manual meter reading and accelerating billing cycles for property managers and utilities. This supports accurate energy accounting and improved revenue visibility in multi-tenant buildings and mixed-use developments. Feature → Compatibility → Application: Designed for outdoor installation with copper bus rated at 800A and 125A sockets, the assembly integrates with common MCB configurations, enabling rapid deployment in new builds or retrofit projects. Feature → Field flexibility → Application: Fifth jaw included at 9 o'clock and the option to switch from ring to ringless with 1MMRC200 reduces field wiring changes, minimizing downtime during configuration. Feature → Compliance → Application: UL Listed certification assures safety and regulatory alignment, while 120/208 VAC operation supports typical commercial and residential service needs. Feature → Install efficiency → Application: The compact footprint and 12.26 in L × 41.8 in H × 7.01 in W form factor streamline enclosure planning and permit compliance, boosting overall project velocity.
Get a Quick Quote for a Eaton 3MM312RC2AB
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton 3MM312RC2AB?
Enquire Now
FAQs
When planning installation, verify outdoor mounting clearance, ensure the 12.26 in length, 41.8 in height, and 7.01 in width fit the enclosure, and confirm a 57 lb weight for lift planning. Confirm compatibility with the local MCB strategy and note that UL Listed hardware enhances code compliance and warranty eligibility.
The 3MM312RC2AB ships with a fifth jaw at 9 o’clock and supports field changes between ring and ringless configurations. To switch, order 1MMRC200. This capability simplifies future reconfigurations for tenant changes or load growth without replacing the meter stack.
Yes. Its outdoor-rated design, copper bus, 800A bus capacity, and 125A sockets support multiple metering needs typical of multi-tenant buildings. The unit’s UL Listed certification helps meet safety and compliance requirements, while its three-phase in, single-phase out configuration aligns with common building electrical distributions.
The product is UL Listed, indicating compliance with recognized safety standards for electrical equipment used in metering and distribution. This certification supports regulatory acceptance in both residential and commercial applications and simplifies inspection and commissioning processes on job sites.
Eaton provides a warranty of one year from the date of installation or eighteen months from shipment, whichever occurs first. This coverage, combined with Eaton’s support network, helps minimize downtime, streamline maintenance planning, and protect against field rework costs during the product lifecycle.