Eaton residential meter stack 1MM312RRLBCPS - UL Listed
Part Number: 1MM312RRLBCPS
Quick Summary
The Eaton residential meter stack is a compact, multi-metering solution for single-phase residential service installs. Facilities often face meter clutter, wiring complexity, and juggling utility requirements, which this enclosure helps mitigate. UL Listed certification and a NEMA 3R enclosure rating ensure safety and weather resilience, while CPSB utility approvals support local compliance. This design also delivers business value through streamlined installation, reduced space needs, and compatibility with common Eaton breakers, enabling efficient, scalable residential metering deployments.
Product Information
Extended Description
1MM312RRLBCPS Eaton: Eaton resi meter stack, SS meter guides, Multiple metering, 125A, Al, Bus: 800A, Horn 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
1MM312RRLBCPS
UPC
786685382692
Product Length/Depth
12.26 in
Product Height
41.8 in
Product Width
7.01 in
Product Weight
58 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
Special features
SS meter guides
Type
Multiple metering
Amperage Rating
125A
Bus material
Aluminum
Bus Rating
800 A
Bypass
Horn
Number of jaws
Four-jaw
Number of sockets
3
Phase
Single-phase in, single-phase out
Security
Ringless
Voltage rating
120/240 V
Utility approvals
TX : City Public Service of San Antonio (CPSB)
Enclosure
NEMA 3R
Interrupt rating
Depends on selected main circuit breaker
Secondary circuit breaker
BR2_, BRH2_, BRHH2_
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM312RRLBCPS
Feature: Multiple metering capability with 125A service and 800A bus rating. Business Impact: Supports simultaneous metering for multi-tenant or mixed-use buildings, reducing the need for separate enclosures and enabling centralized control. Application: Ideal for residential developments and small commercial projects seeking efficient space utilization and simplified metering layouts. Feature: Aluminum bus material and four-jaw sockets. Business Impact: Lighter weight and robust conductivity improve installation ergonomics and service reliability, while minimizing copper costs. Application: Suitable for retrofit and new installations where weight and ease of handling matter, including rooftop or constrained spaces. Feature: NEMA 3R enclosure with horn bypass and ringless design. Business Impact: Delivers weather resistance and safer testing without opening live enclosures, reducing downtime and maintenance risk. Application: Outdoor or semi-exposed installations in diverse climates, with easy access for routine metering tasks. Feature: Secondary breaker compatibility BR2_, BRH2_, BRHH2_. Business Impact: Flexible configuration with standard Eaton devices lowers spare part inventory and speeds commissioning. Application: Projects requiring rapid customization to meet evolving load profiles. Feature: Utility-ready with CPSB approval and 120/240 V single-phase in/out. Business Impact: Smooth utility interconnection and broad residential compatibility, ensuring quick permit pathways and reliable service restoration. Application: Municipal or utility-coordinated installations in Texas and similar markets.
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FAQs
The 1MM312RRLBCPS supports secondary circuit breakers BR2_, BRH2_, and BRHH2_ as listed, enabling flexible configurations without sacrificing safety. Its four-jaw sockets and 3 sockets accommodate standard Eaton metering hardware, reducing the need for custom interconnects and speeding commissioning in multi-meter installations.
This meter stack uses a NEMA 3R enclosure, making it suitable for outdoor and semi-exposed locations. UL Listed construction and CPSB utility approval support outdoor reliability and local utility coordination, ensuring resilient performance in varied climates and residential settings.
With multiple metering capability, SS meter guides, and a 125A rating feeding an 800A bus, the stack enables centralized metering for multi-tenant or mixed-use properties. Its design reduces space, simplifies wiring, and accelerates project timelines by minimizing separate enclosures.
Key safety features include UL Listed certification and a weather-rated NEMA 3R enclosure, along with horn bypass for safe testing and ringless construction to reduce tampering risk. These characteristics help meet safety standards and streamline permitting in many jurisdictions.
Dimensions are 12.26 in depth, 41.8 in height, and 7.01 in width, with an approximate weight of 58 lb. Plan mounting hardware, required clearance, and service access accordingly to ensure proper ventilation, ease of meter access, and compliance with local codes.