Eaton 1MM420RRLBC Residential meter stack - UL Listed
Part Number: 1MM420RRLBC
Quick Summary
The Eaton residential meter stack enables modular multi-metering for single‑phase 120/240 V service in residential or light commercial buildings. Installing traditional metering configurations can be space hogging and prone to wiring errors, delaying projects. UL Listed certification and a NEMA 3R enclosure on this unit provide safety and durability in varied environments, with compatible secondary breakers to support scalable metering. With compatible secondary breakers and a compact footprint, it supports scalable metering while reducing installation time and risk. Engineers benefit from centralized metering data for energy management, billing accuracy, and streamlined compliance reporting. This solution aligns with building automation efforts and supports future grid-ready upgrades. In practice, technicians appreciate reliable mounting, straightforward wiring, and Eaton’s established support network.
Product Information
Extended Description
1MM420RRLBC Eaton: Eaton resi meter stack, Multiple metering, 200A, Cu, Bus: 800A, Horn bypass, NEMA 3R, Depends on selected main circuit breaker, Four-jaw, 4, Single-phase in/single-phase out, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ringless, 120/240V
Product Name
Eaton residential meter stack
Catalog Number
1MM420RRLBC
UPC
782114989968
Product Length/Depth
13.5 in
Product Height
64.5 in
Product Width
7.01 in
Product Weight
80 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
200A
Bus material
Copper
Bus Rating
800 A
Bypass
Horn
Number of jaws
Four-jaw
Number of sockets
4
Phase
Single-phase in, single-phase out
Security
Ring
Voltage rating
120/240 V
Enclosure
NEMA 3R
Interrupt rating
Depends on selected main circuit breaker
Secondary circuit breaker
CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM420RRLBC
Feature: Multi-metering enclosure consolidates energy measurement for up to four sockets in a single housing. Impact: Reduces equipment footprint and simplifies wiring, lowering labor costs and potential misconnection. Application: Ideal for multi-tenant residential units and light commercial installs where space and accuracy matter. Feature: Amperage rating of 200 A with a copper bus rated 800 A. Impact: Supports current growth and future load demands without swapping gear. Application: Scalable metering for evolving building needs while maintaining safety margins. Feature: Horn bypass and four-jaw, ringless design. Impact: Enhances safety during maintenance and ensures secure, low‑loss connections. Application: Fast, safe service restoration in busy electrical rooms. Feature: Phase configuration is single‑phase in, single‑phase out with a 120/240 V rating. Impact: Simplifies panel layout and reduces wiring complexity. Application: Residential feeder metering and small commercial service entrances. Feature: Enclosure is NEMA 3R and UL Listed. Impact: Delivers weather resistance and regulatory compliance for indoor/outdoor installations. Application: Outdoor meter stacks in exposed environments and regulated facilities. Feature: Secondary circuit breakers compatibility includes CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM. Impact: Enables flexible protection schemes without reconfiguring the enclosure. Application: Building automation and multi-meter protection strategies. Feature: Compact dimensions (13.5 in depth, 64.5 in height, 7.01 in width) and 80 lb weight. Impact: Easier handling and mounting in constrained spaces; faster commissioning. Application: Retrofit projects and new builds with tight service room layouts.
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FAQs
The 1MM420RRLBC is designed for single‑phase in/out use and offers compatibility with Eaton secondary breakers including CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, and CVH2_XMM series. This enables seamless integration into existing metering schemes without extensive rewiring. The four‑jaw, ringless design simplifies mounting, while its 120/240 V rating aligns with common residential feeder circuits. Always verify the main circuit breaker selection to determine the final interrupt rating for safe operation.
Key specs include a 200 A amperage rating, copper bus with an 800 A bus rating, horn bypass, four‑jaw configuration, and four sockets. It supports single‑phase in/out at 120/240 V and uses a NEMA 3R enclosure. The interrupt rating depends on the selected main circuit breaker, and UL Listed certification confirms compliance with safety standards for electrical devices used in building systems.
Yes. The unit is purpose‑built for multi‑meter deployments in residential and light commercial settings, delivering centralized metering within a compact footprint. Its multi‑meter capability, compatible secondary breakers, and robust enclosure support accurate energy measurement, reduced wiring complexity, and faster installation—benefiting property managers, electrical contractors, and facility teams managing multiple tenants or suites.
The meter stack is UL Listed, ensuring conformity with recognized electrical safety standards. It features a NEMA 3R enclosure, providing suitable protection for outdoor or harsh environments. These certifications help meet regulatory requirements for electrical installations in commercial and residential facilities and support safe, long‑lasting performance in diverse conditions.
Warranty is governed by Eaton’s policy 25-000, offering one year from installation or eighteen months from shipment, whichever occurs first. This, combined with modular metering design and Eaton’s support network, reduces field service time and replacement risk. The centralized metering also improves billing accuracy and energy management, contributing to a favorable return on investment over the asset life.