Eaton 3MM520R12RL Residential Meter Stack - UL Listed
Part Number: 3MM520R12RL
Quick Summary
Eaton 3MM520R12RL residential meter stack enables three-phase metering with a single-phase out for group metering in outdoor facilities. Installers face weather exposure, safety risks, and utility compliance hurdles when choosing a durable, field-ready meter stack. UL Listed safety certification and Georgia Power utility approval ensure compliance, while a rugged outdoor enclosure supports reliable performance. Designed for three-phase in, single-phase out metering, it helps utilities and contractors meet safety, efficiency, and regulatory requirements while reducing total cost of ownership.
Product Information
Extended Description
3MM520R12RL Eaton: Eaton's Three-Phase Residential Meter Stack Module, Group Metering Type, 200A, Aluminum Bus 1200 Ampere, No bypass, Outdoor, Five-jaws, 5 Sockets, Three-phase in, single-phase out, Ringless Security, 120/208V
Product Name
Eaton residential meter stack
Catalog Number
3MM520R12RL
UPC
786685010830
Product Length/Depth
7.75 in
Product Height
75.75 in
Product Width
15 in
Product Weight
106 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
Group Metering
Utility approvals
GA : Georgia Power
Interrupt rating
Depends on selected main circuit breaker
Enclosure
Outdoor
Secondary circuit breaker
CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM
Bus Rating
1200 A
Phase
Three-phase in, single-phase out
Voltage rating
120/208V
Amperage Rating
200A
Bus material
Aluminum
Bypass
None
Number of jaws
Five-jaw
Number of sockets
5
Phase balance
A-B
Security
Ringless
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM520R12RL
Feature: Three-phase in, single-phase out metering. Business Impact: Simplifies multi-tenant and utility-scale metering configurations, reducing device count and installation time. Application: Ideal for group metering in outdoor facilities where reliable phase conversion is required. Feature: Outdoor enclosure with aluminum bus rated at 1200 A. Business Impact: Enhances durability against weather and allows higher fault tolerance, lowering maintenance needs over time. Application: Suitable for exterior installations in harsh environments and high-load feeders. Feature: Five-jaw, five sockets with ringless security and no bypass. Business Impact: Improves safety and security, minimizing unauthorized access while preserving fault isolation. Application: Meter stacks in accessible service areas for quick, secure disconnections. Feature: 120/208V, 200A rating with compatible secondary breakers (CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM). Business Impact: Delivers flexible configuration and reliable protection with scalable utility-ready options. Application: Georgia Power approved setups in residential and light commercial projects. Feature: UL Listed and Georgia Power approval plus robust warranty. Business Impact: Ensures regulatory compliance and predictable service life, reducing risk and total cost of ownership. Application: Utilities and contractors seeking compliant, long-term metering solutions for outdoor group metering.
Get a Quick Quote for a Eaton 3MM520R12RL
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 3MM520R12RL?
Enquire Now
FAQs
Plan for outdoor mounting on a weather-resistant support, verify enclosure integrity, and secure the five-jaw, five-socket configuration. Connect the three-phase input to the utility side and route the single-phase output to the load side. Ensure all wiring conforms to local codes and that Georgia Power approval requirements are satisfied where applicable; confirm UL Listed components are used throughout.
Compatibility depends on the main circuit breaker selected. The unit provides a 1200 A bus rating and a 200 A amperage rating, with interrupt rating depending on the installed main breaker. Secondary breakers CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, and CVH2_XMM are supported, enabling flexible protection schemes for varied applications.
Designed for group metering in outdoor environments, it excels in multi-tenant residential complexes, light commercial facilities, and distributed energy setups. The three-phase in, single-phase out configuration, combined with outdoor enclosure and 120/208V operation, makes it ideal for utilities and contractors managing shared-meter service points.
The product is UL Listed for safety and has Georgia Power utility approval, supporting regulatory compliance in specified service territories. These certifications help ensure safe installation, consistent performance, and acceptance by utility stakeholders for outdoor metering projects.
Warranty follows Eaton’s policy: one year from installation or 18 months from shipment, whichever occurs first. The rugged outdoor enclosure and aluminum bus reduce corrosion risk and maintenance needs, delivering lower lifecycle costs and predictable performance for long-term metering installations.