Eaton 1MM312RRLC Residential Meter Stack - UL Listed, NEMA 3R

Part Number: 1MM312RRLC
Manufacturer
Eaton
Part number
1MM312RRLC

Quick Summary

Eaton 1MM312RRLC residential meter stack is a multi-metering solution for 120/240 V single-phase service in residential and light commercial settings. This design addresses the challenge of consolidating metering points while keeping wiring simple and installations within budget. UL Listed protection and a rugged NEMA 3R enclosure ensure outdoor reliability across climates, while four-jaw sockets and ringless security support flexible configurations. Compatible with BR2_BRH2_BRHH2 secondary breakers and a copper bus, it delivers robust power distribution with easy future upgrades. By enabling accurate tenant metering and scalable expansion, this solution helps operators reduce operational costs and improve overall energy management across properties.

Product Information

Extended Description

1MM312RRLC Eaton: Eaton residential meter stack, Multiple metering, 125A, Copper, Bus: 800A, No bypass, NEMA 3R, Depends on selected main circuit breaker, Four-jaw, 3, Single-phase in/single-phase out, BR2_, BRH2_, BRHH2_, Ringless, 120/240V
Product Name
Eaton residential meter stack
Catalog Number
1MM312RRLC
UPC
782114989883
Product Length/Depth
12.26 in
Product Height
41.8 in
Product Width
7.01 in
Product Weight
54 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
Amperage Rating
200A
Bus material
Copper
Bus Rating
600 A
Bypass
None
Number of jaws
Four-jaw
Number of sockets
3
Phase
Single-phase in, single-phase out
Security
Ring
Voltage rating
120/240 V
Utility approvals
FL : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) IN : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) KY : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) NC : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) OH : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) SC : MEG (Duke Energy, Florida Power, Tampa Electric, Gulf Power, Oklahoma Gas and Electric) FL : Tallahassee City Electric NC : Dominion VA : Dominion
Enclosure
NEMA 3R
Interrupt rating
Depends on selected main circuit breaker
Secondary circuit breaker
BR2_, BRH2_, BRHH2_
Feature: Multiple metering capability enables simultaneous monitoring and billing across units. Benefit: Improves tenant accountability and reduces manual meter reads, driving operational efficiency in multi-tenant dwellings. Application: Ideal for residential buildings and small commercial sites seeking centralized metering with flexible expansion. Feature: 200A Amperage Rating and 600 A Bus Rating provide capable service entry and distribution. Benefit: Lets you support higher loads with a single, compact enclosure, reducing the need for mid-size service upgrades. Application: Suitable for apartment complexes and mixed-use developments where future load growth is anticipated. Feature: Copper bus and four-jaw sockets deliver solid connections with low resistance. Benefit: Enhances electrical integrity and reduces heat rise, contributing to safer and more reliable service. Application: Appropriate for new builds and retrofits in demanding environments where uptime matters. Feature: UL Listed with NEMA 3R enclosure offers outdoor-ready protection. Benefit: Simplifies outdoor installations and regulatory compliance, reducing installation complexity and risk. Application: Outdoor meter stacks for building façades, car ports, or external power-distribution points. Feature: Compatibility with secondary breakers BR2, BRH2, BRHH2 supports straightforward upgrades and maintenance. Benefit: Enables easy metering customization without replacing the entire panel, lowering maintenance costs. Application: Retrofit projects and new developments that require configurable metering sequences. Feature: Ring security and 120/240 V single-phase in/out support safe, secure operation. Benefit: Improves tamper resistance and reduces accidental disconnections, protecting revenue and equipment. Application: Tenant metering in multi-unit facilities and retail spaces requiring reliable service delivery.

Get a Quick Quote for a Eaton 1MM312RRLC

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 1MM312RRLC? Enquire Now

FAQs

The 1MM312RRLC supports secondary circuit breakers BR2, BRH2, and BRHH2, enabling flexible metering configurations and straightforward upgrades without reworking the entire panel. This compatibility simplifies retrofits in existing installations and helps ensure metering accuracy as tenant loads evolve, while maintaining UL Listed safety and reliable copper bus connections.
Key specs include an Amperage Rating up to 200A, Bus Rating of 600A, Voltage rating of 120/240V, four-jaw sockets, three sockets total, single-phase in/out, copper bus, and a NEMA 3R outdoor enclosure. It is UL Listed and designed for multi-metering in residential or light commercial applications, with protection dependent on the selected main circuit breaker.
Yes. The unit is designed for multiple metering scenarios, with a ringed security system, four-jaw sockets, and copper bus that support reliable, scalable distribution. Its NEMA 3R enclosure and UL Listing make it appropriate for outdoor installations in multi-tenant buildings, delivering accurate metering while simplifying tenant energy management and billing.
The 1MM312RRLC is UL Listed and enclosed in a NEMA 3R rated cabinet, suitable for outdoor use. Utility approvals and regional MEG listings are noted in its specifications, reflecting compliance across multiple jurisdictions. This combination helps ensure code compliance, safety, and acceptance by utilities in varied markets.
Benefits include faster installation due to pre-engineered metering configurations, reduced wiring complexity with a copper bus and four-jaw design, and easier future upgrades via BR2/BRH2/BRHH2 compatibility. A UL Listed, outdoor-rated enclosure lowers service interruption risk, supporting lower lifecycle costs and improved energy management for property portfolios.