Eaton 3MM312RRLBCPS Residential Meter Stack - UL Listed
Part Number: 3MM312RRLBCPS
Quick Summary
Eaton 3MM residential meter stack provides multi-metering for 125A service in multi-unit applications. Contractors often struggle with space constraints, wiring complexity, and coordinating multiple meters in tight enclosures. This unit is UL Listed and designed for safe, compliant operation in residential and light commercial settings, with Eaton’s warranty and support. Featuring an aluminum bus with 800A bus rating, 120/208 Vac compatibility, and flexible metering options, it delivers reliable performance and reduced install time. The 3MM312RRLBCPS supports three-phase in, single-phase out configurations and socket arrangements that simplify field wiring, helping you meet project timelines and budget targets.
Product Information
Extended Description
3MM312RRLBCPS Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Al, Bus:800A, Horn bypass, Out, Depends on selected MCB, Five-jaw, Sockets:3, Three-phase in, single-phase out, A-B, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM312RRLBCPS
UPC
786685491417
Product Length/Depth
12.26 in
Product Height
41.8 in
Product Width
7.01 in
Product Weight
98 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
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM312RRLBCPS
Feature: Multi-metering capability consolidates energy measurement for multiple circuits into a single enclosure. Business Impact: reduces cabinet footprint and procurement complexity, shortening installation timelines. Application: ideal for multi-unit residential buildings and light commercial deployments with varying tenant loads. Feature: 125A service with an 800A bus rating and flexible metering options. Business Impact: supports scalable power distribution while maintaining safety margins and future expansion. Application: well-suited for evolving properties where metering needs change over time. Feature: Three-phase in, single-phase out capability and five-jaw, ringless sockets at 125A. Business Impact: simplifies wiring schemes and lowers field wiring mistakes, improving overall reliability. Application: common in mixed-load residential and small commercial schemes. Feature: Horn bypass and configurable MCB compatibility. Business Impact: enables safe testing and maintenance without fully removing service, reducing downtime. Application: property management and service providers needing predictable outage windows. Feature: UL Listed certification and Eaton warranty support. Business Impact: ensures safety compliance and post-installation assistance, mitigating risk and warranty claims. Application: projects prioritizing regulatory adherence and long-term serviceability. Additional note: Compact footprint dimensions (12.26 in L, 7.01 in W, 41.8 in H) with a 98 lb weight support straightforward installation in restricted spaces, while supporting 120/208 Vac operation for common distribution boards. Industry keywords integrated include residential meter stack, multi-metering panel, 125A service, 120/208 Vac compatibility, and ringless socket configurations.
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FAQs
Plan for a footprint around 12.26 in length, 7.01 in width, and 41.8 in height; the unit weighs 98 lb and supports an aluminum bus rated at 800A. Ensure a suitable recessed or surface-mount enclosure capable of UL Listed assemblies, with space for three-phase in and single-phase out connections and 125A sockets. Verify 120/208 Vac compatibility and confirm MCB alignment per project specs.
The product is designed for multiple metering with a 125A service and an 800A bus, enabling monitoring of several circuits within one cabinet. This consolidation reduces cabinet footprint, simplifies procurement, and streamlines tenant metering workflows, making it ideal for multi-unit residential or light commercial developments where load profiles vary by tenant.
Yes, the meter stack is UL Listed, indicating compliance with recognized safety standards for electrical equipment. This certification supports safer installation practices and aligns with typical regulatory expectations for residential and light commercial meter cabinets, helping reduce compliance risk on projects.
Key ratings include 125A service with a 800A bus, 120/208 Vac operation, and three-phase in with single-phase out configuration. The unit uses five-jaw sockets and supports ringless, 125A sockets. Ensure MCB compatibility based on selected protection scheme and confirm fitment with your facility’s distribution equipment.
The product is covered by Eaton’s warranty policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. In addition to standard warranty coverage, Eaton provides technical support and access to specification sheets and product catalogs to assist with ongoing maintenance and system upgrades.