Eaton 1MM412RRL Residential Meter Stack - UL Listed
Part Number: 1MM412RRL
Quick Summary
Eaton residential meter stack is an outdoor power distribution unit for single‑phase metering on residential sites. Engineers frequently face space constraints, weather exposure, and uncertain main breaker compatibility that slow deployment. UL Listed certification ensures electrical safety compliance, and the outdoor enclosure is designed for 120/240 V service with a 125 A amperage rating and 800 A bus rating. The stack consolidates metering and protective functions to shrink installation time, reduce maintenance visits, and improve reliability for utilities and contractor projects. It supports 4 sockets, aluminum ringless construction, and outdoor readiness, making it a practical choice for residential metering and light commercial uses.
Product Information
Extended Description
1MM412RRL Eaton: Eaton residential meter stack, Amperage rating: 125A, Bus rating: 800A, Outdoor, Interrupt rating depends on selected main circuit breaker, Single-phase in/single-phase out, 4 Sockets, Aluminum, Ringless, 120/240 Vac, 4-jaw
Product Name
Eaton residential meter stack
Catalog Number
1MM412RRL
UPC
786849052072
Product Length/Depth
7.01 in
Product Height
48.5 in
Product Width
12.26 in
Product Weight
151 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
ME : Central Maine Power NC : Dominion VA : Dominion ME : Emera Maine (Bangor Hydro Electric Co./ Maine Public Service Company) AR : Entergy LA : Entergy MS : Entergy TX : Entergy GA : Georgia Power TN : Middle Tennessee EMC FL : Tallahassee City Electric SC : South Carolina Electric and Gas (SCE&G) IN : Indiana Michigan Power (IMP) (AEP East) MI : Indiana Michigan Power (IMP) (AEP East) OH : AEP Ohio (AEP East) TN : Appalachian Power (AEP East) VA : Appalachian Power (AEP East) WV : Appalachian Power (AEP East) TX : Texas-New Mexico Power (TNMP) NM : Texas-New Mexico Power (TNMP)
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
125A
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 1MM412RRL
Outdoor aluminum enclosure with 4 sockets and ringless, four‑jaw design provides weather resistance and straightforward wiring, reducing field errors and corrosion risk. Business impact: longer service life in harsh environments and lower maintenance costs. Application: ideal for exterior residential metering where reliability is critical and installation windows are tight. The 125 A amperage rating paired with an 800 A bus supports typical home service loads and offers room for future expansion without a full replacement. This translates to lower lifecycle costs and simplified planning for facilities managers and electricians. The unit operates at 120/240 V with single‑phase in/out, standardizing connections to common panels and enabling quick integration into existing electrical rooms or external enclosures. Interrupt rating depends on the selected main circuit breaker, providing installation flexibility to match Eaton protection schemes. UL Listed certification confirms safety compliance, while utility approvals across multiple programs ease field acceptance and interconnection. With a footprint of 48.5 in height, 12.26 in width, and 7.01 in depth, it fits compact outdoor spaces and aligns with typical meter stack footprints. A 1‑year warranty (or 18 months from shipment, per policy) reduces procurement risk and supports total cost of ownership improvements for asset owners.
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FAQs
The unit is designed for outdoor use with an aluminum ringless enclosure and four sockets in a 4‑jaw configuration, supporting single‑phase in/out at 120/240 V. Plan for a footprint of 48.5 in by 12.26 in by 7.01 in and ensure a level mounting surface, weather protection, and appropriate clearance for service access. Verify compatibility with the main breaker chosen and ensure compliance with local utility requirements.
Interrupt rating is not fixed and depends on the selected main circuit breaker. This provides design flexibility to pair the meter stack with Eaton main breakers that match anticipated load and safety standards. When planning, confirm the interrupt rating with the specific breaker model and consult the datasheet to ensure the combination meets required protection levels.
Yes. The product carries UL Listed certification and is built for outdoor residential metering, with utility approvals listed across multiple programs. This helps streamline interconnection with various utilities and reduces customization time on site. Always verify local utility acceptance to ensure your installation aligns with regional interconnection requirements.
The outdoor aluminum enclosure and ringless construction resist environmental exposure, lowering corrosion and field repair needs. A single, integrated meter stack reduces the number of separate components, simplifying inspections and maintenance. The warranty offers protection against early failures, supporting a lower total cost of ownership over the system’s lifetime.
The unit provides single‑phase in/out operation at 120/240 V, with an amperage rating of 125 A and a bus rating of 800 A. Dimensions are 48.5 in tall, 12.26 in wide, and 7.01 in deep, with an aluminum, outdoor enclosure and four sockets. Interrupt rating depends on the installed main breaker, and the product is UL Listed for safety compliance.