Eaton 1MM512RRLC Residential Meter Stack - UL Listed NEMA 3R
Part Number: 1MM512RRLC
Quick Summary
Eaton 1MM512RRLC Residential Meter Stack provides multi-metering for single-phase residential power distribution. This solution helps building owners and installers manage utility metering in multi-tenant or multifamily applications without adding separate cabinets. Engaging with the right meter stack reduces wiring complexity and footprint on crowded utility rooms. The design emphasizes durability and safety with UL Listed certification and a rugged NEMA 3R enclosure, providing weather resistance for outdoor or exposed installations. The copper bus, 125A main rating, and 800A bus rating ensure robust electrical performance, while four jaws and five sockets support scalable metering configurations. In practice, it supports cost-effective upgrades, compatible main breakers, and faster deployments for contractor and distributor teams.
Product Information
Extended Description
1MM512RRLC Eaton: Eaton residential meter stack, Multiple metering, 125A, Copper, Bus: 800A, No bypass, NEMA 3R, Depends on selected main circuit breaker, Four-jaw, 5, Single-phase in/single-phase out, BR2_, BRH2_, BRHH2_, Ringless, 120/240V
Product Name
Eaton residential meter stack
Catalog Number
1MM512RRLC
UPC
782114990018
Product Length/Depth
12.26 in
Product Height
57.5 in
Product Width
7.01 in
Product Weight
72 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
125A
Bus material
Copper
Bus Rating
800 A
Bypass
None
Number of jaws
Four-jaw
Number of sockets
5
Phase
Single-phase in, single-phase out
Security
Ringless
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_
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM512RRLC
Feature one: Multi-metering capability with 125A rating, 800A bus, four-jaw design, and five sockets. Business impact: enables centralized metering for multiple tenants, reducing cabinet count and installation costs. Application: ideal for multi-dwelling units, small commercial buildings, or retrofit projects where space is at a premium. Feature two: Copper bus material and ringless, single-phase in/out design. Business impact: copper bus ensures low resistance, improved voltage integrity, and long-term reliability. Application: critical for accurate revenue metering and stable feeder performance. Feature three: NEMA 3R enclosure with no bypass. Business impact: weather resistance and metering integrity reduce downtime and service calls. Application: outdoor or exposed installations in areas requiring outdoor compliance. Feature four: Compatibility with Eaton main circuit breakers BR2, BRH2, BRHH2 and an interrupt rating that depends on the selected main breaker. Business impact: simplifies procurement and safe integration with Eaton components. Application: straightforward installation with existing Eaton products. Feature five: Warranty and support. Business impact: reduces risk and supports return on investment through a defined warranty window. Application: procurement planning and field service coordination.
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FAQs
Follow standard single-phase in/out metering wiring practices. Ensure the main circuit breaker matches the 125A rating and use the four-jaw, copper bus with the appropriate BR series breaker (BR2, BRH2, or BRHH2) as specified. Refer to the Eaton installation sheets for exact connections and torque values. The unit is designed to be compatible with Eaton components and is UL Listed for safety.
The unit supports multiple metering in a single enclosure with a 125A service and an 800A bus rating, configured for single-phase in/out. It provides four jaws and five sockets to accommodate multiple meters and is suitable for multi-tenant or multifamily applications where space efficiency and centralized metering are priorities.
Yes. It is designed for multi-metering in residential settings, reducing cabinet count and simplifying installations in MDUs. The NEMA 3R enclosure supports outdoor or exposed installations, and its compatibility with common mains and Eaton BR breakers aids rapid deployment and ongoing maintenance.
The 1MM512RRLC is UL Listed and features a NEMA 3R enclosure, which provides weather resistance. These certifications and ratings support safety compliance and outdoor reliability for residential and light commercial metering installations.
The product warranty follows Eaton Selling Policy 25-000: one year from the date of installation or eighteen months from shipment, whichever occurs first. This supports asset lifecycle planning and provides a basis for service planning and ROI calculations.