Eaton 1MM412RRLBCPS Residential Meter Stack - UL Listed
Part Number: 1MM412RRLBCPS
Quick Summary
Eaton residential meter stack provides multi-meter service for residential electrical panels. Contractors and facilities managers frequently wrestle with wiring complexity and installation delays when adding metering for multi-tenant buildings or split-load homes. With UL Listed safety, a NEMA 3R outdoor-ready enclosure, and a 125A/800A bus architecture, this design delivers safety, weather resistance, and scalable capacity. Designed for reliability in residential metering and light commercial applications, it supports four-jaw terminations and four sockets, reducing field errors and commissioning time. Streamlining procurement and installation, the meter stack aligns with compatible secondary breakers BR2_, BRH2_, BRHH2_ and employs aluminum bus to deliver lighter weight with durable performance.
Product Information
Extended Description
1MM412RRLBCPS 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, 4, Single-phase in/single-phase out, BR2_, BRH2_, BRHH2_, Ringless, 120/240V
Product Name
Eaton residential meter stack
Catalog Number
1MM412RRLBCPS
UPC
786685382685
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
66 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
4
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 - 1MM412RRLBCPS
Feature: Multiple metering configuration inside a single stack with SS meter guides. Business Impact: Enables precise metering for multi-tenant or dual-load homes, reducing wiring errors and simplifying future expansions. Application: Suitable for residential and light commercial metering projects. Feature: 125A Amperage Rating and 800A Bus Rating. Business Impact: Supports main and submetering loads with room to grow without upsizing equipment. Application: Service entrances in multi-occupancy buildings and mixed-load residences. Feature: Aluminum Bus material. Business Impact: Lighter weight improves handling during field installation and reduces structural support requirements. Application: On-site installation where weight savings matter. Feature: Enclosure is NEMA 3R. Business Impact: Provides weather resistance and outdoor reliability, minimizing corrosion and environmental impact. Application: Exterior meter stacks on building exteriors or protected outdoor locations. Feature: Bypass (Horn) and Ringless design with Four-jaw, Four sockets. Business Impact: Improves service continuity during maintenance and enhances safety with ringless access. Application: High-reliability metering in multi-tenant and single-family dwellings. Feature: Phase and voltage specifications (Single-phase in/out, 120/240 V). Business Impact: Aligns with standard residential distributions, enabling straightforward integration with existing panels. Application: New builds and retrofit projects requiring standard single-phase service.
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FAQs
The 1MM412RRLBCPS is designed for multi-meter residential service with a 125A rating and an 800A bus, featuring four-jaw, four-socket configuration and single-phase in/out. It is compatible with Eaton secondary breakers BR2_, BRH2_, BRHH2_ for streamlined wiring. This enclosure supports CPSB utility conditions and comes in a NEMA 3R outdoor-rated package, simplifying retrofit in shared-wall or multi-unit installations.
The four-jaw, four-socket design enables precise alignment for four separate conductors and meters, reducing mis-wiring risks and simplifying submetering layouts. This configuration supports multi-tenant or split-load applications, improving metering accuracy, reducing commissioning time, and enabling scalable expansion without replacing the enclosure.
Yes. The unit uses a NEMA 3R enclosure rated for outdoor environments, providing rain, corrosion, and dust protection. Its aluminum bus and UL Listed construction enhance resilience in exterior installations, making it a dependable choice for exposed walls, carports, or protected outdoor spaces in residential or light commercial projects.
This meter stack is UL Listed and CPSB-approved for utility service contexts. These certifications verify safety, material integrity, and compliance with recognized standards for electrical distribution equipment, supporting code-adherence in residential and light commercial metering installations and facilitating procurement through recognized compliance labeling.
Maintenance is typically minimal, leveraging a robust enclosure and durable aluminum bus to reduce corrosion and wear. ROI comes from faster installations, reduced labor costs, and safer, more reliable metering with fewer field errors. The four-jaw design and compatibility with BR2/BRH2/BRHH2 breakers support flexible reconfigurations as building loads or tenant counts change.