Eaton 1MM420RRLC Residential Meter Stack - UL Listed
Part Number: 1MM420RRLC
Quick Summary
The Eaton residential meter stack 1MM420RRLC provides reliable, multi-point metering for outdoor residential power systems. Engineers often struggle with space constraints, weather exposure, and code compliance for outdoor metering installations. Utility approvals include Tallahassee (FL), Dominion in North Carolina, and Dominion in Virginia, reflecting regional acceptance for utility-grade metering. This solution integrates with Eaton's power management ecosystem and supports outdoor metering requirements. By combining robust enclosure features with scalable metering capabilities, it reduces wiring complexity and accelerates compliance testing for utility-grade installations.
Product Information
Extended Description
1MM420RRLC Eaton: Eaton residential meter stack, Amperage rating: 200A, Socket rating: 200A, Bus rating: 800A, Outdoor, Interrupt rating depends on selected main circuit breaker, Single-phase in/single-phase out, 4 Sockets, Copper, Ringless, 120/240 Vac
Product Name
Eaton residential meter stack
Catalog Number
1MM420RRLC
UPC
782114989975
Product Length/Depth
7.01 in
Product Height
64.5 in
Product Width
13.5 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
Utility approvals
FL : Tallahassee City Electric NC : Dominion VA : Dominion
Interrupt rating
Depends on selected main circuit breaker
Enclosure
Outdoor
Bus Rating
800 A
Phase
Single-phase in, single-phase out
Voltage rating
120/240 V
Amperage Rating
200A
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM420RRLC
Amperage and bus ratings drive scalability: with a 200 A amperage rating and an 800 A bus rating, this meter stack accommodates growing feeders and potential future expansion, while four copper, ringless sockets ensure secure, low-resistance connections. Business impact: higher reliability and capacity translate to fewer field rewires and service interruptions. Application: suitable for residential feeders and light commercial metering in outdoor environments, enabling a compact, centralized metering point without sacrificing performance. Outdoor enclosure and durability: the rugged outdoor enclosure protects sensitive metering electronics from weather, reducing maintenance cycles and downtime. Business impact: enhanced uptime and lower lifecycle costs. Application: ideal for installations exposed to sun, rain, or temperature swings. Compatibility and installation ease: single-phase in/out configuration with 120/240 V operation supports standard residential wiring, while a clear main breaker dictates interrupt rating. Application: streamlines integration with existing protection schemes and simplifies commissioning. Utility approvals and compliance: UL Listed certification paired with regional approvals (FL, NC, VA) facilitates utility alignment and quicker project sign-offs. Business impact: faster procurement cycles and reduced regulatory risk. Warranty and service: Eaton’s policy provides a one-year warranty from installation or 18 months from shipment, offering peace of mind during commissioning and operation. Application: supports long-term asset management and maintenance planning. Dimensions and weight: the stack measures 64.5 in high, 13.5 in wide, and 7.01 in depth, with an 80 lb weight, enabling practical installation in constrained spaces without compromising accessibility or future-serviceability.
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FAQs
The 1MM420RRLC is designed for single-phase in/out operation at 120/240 V with a 200 A rating and an 800 A bus. It features four copper, ringless sockets in an outdoor enclosure and relies on your selected main circuit breaker to determine the interrupt rating. It pairs with standard residential feeders and common Eaton protection devices to simplify wiring and reduce field complexity.
Key specs include 200 A amperage rating, 120/240 V voltage rating, 800 A bus rating, four sockets, copper ringless construction, and an outdoor enclosure. The interrupt rating depends on the main circuit breaker chosen. This combination supports reliable metering for residential feeders while keeping installation compact and accessible for maintenance.
Utility approvals listed for this product include FL: Tallahassee City Electric, NC: Dominion, and VA: Dominion. These regional endorsements help streamline utility coordination, permitting, and commissioning within those jurisdictions, reducing lead times during project sign-off and installation.
The unit is covered under Eaton Selling Policy 25-000, offering a one-year warranty from installation or eighteen months from shipment, whichever occurs first. This provides protection against manufacturing defects and supports maintenance planning, helping operators manage asset lifecycle costs with confidence.
Expected ROI comes from faster commissioning, reduced wiring labor, and improved reliability due to a purpose-built, outdoor-ready metering enclosure. The four sockets and single-phase in/out design simplify wiring, while UL Listed certification and regional approvals minimize compliance risk and rework during scoping, procurement, and field deployment.