Eaton 3MM412RRLB Residential Meter Stack - UL Listed
Part Number: 3MM412RRLB
Quick Summary
Eaton 3MM residential meter stack provides multi-point metering for outdoor installations. Engineers frequently struggle with wiring complexity and space constraints in shared panels. UL Listed safety certification supports compliance in residential and light commercial metering applications. This solution aligns with Power Management & Distribution standards, delivering scalable metering, improved service reliability, and faster commissioning for contractors and facility teams.
Product Information
Extended Description
3MM412RRLB Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Al, Bus:800A, Horn bypass, Outdoor, Depends on selected MCB, Five-jaw, Sockets:4, 3-phase in, 1-phase out, A-B, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412RRLB
UPC
786849052317
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
63 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
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM412RRLB
Feature → Business Impact → Application: Multiple metering in a single outdoor enclosure enables monitoring of separate loads on one site, reducing panel count and simplifying service upgrades, which translates to lower installation labor and better asset management. Application: ideal for multi-tenant properties, outdoor electrical rooms, and shared service entries where visibility into individual circuits is required without sacrificing space. Feature → Business Impact → Application: 125A service with an 800A bus capacity supports current growth and service expansions without replacing the stack, reducing capex and downtime. Application: residential developments and light commercial feeders benefit from scalable metering under a single enclosure. Feature → Business Impact → Application: Outdoor-rated enclosure and five-jaw sockets with four receptacles provide rugged, weather-resistant installation that minimizes indoor space and accelerates commissioning. Application: outdoor meter banks on building perimeters, shopping centers, and campus infrastructure. Feature → Business Impact → Application: Compatibility with selected Eaton MCBs BR2_, BRH2_, BRHH2_, BRX2 ensures reliable protection coordination and straightforward retrofits. Application: projects requiring predictable breaker performance and efficient field wiring. Feature → Business Impact → Application: UL Listed certification and clear documentation support maintenance planning, regulatory compliance, and safer long-term operation. Application: facilities with strict safety programs and audit-ready metering assets. Industry context note: The 3MM412RRLB is designed to integrate with Eaton’s metering product family, enabling consistent installation practices, reduced commissioning time, and optimized total cost of ownership for outdoor power management and distribution systems.
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FAQs
The 3MM412RRLB supports multiple metering in outdoor enclosures and is designed for compatibility with Eaton MCBs BR2_, BRH2_, BRHH2_, and BRX2. This compatibility ensures coordinated protection and streamlined wiring during retrofit or new installations. In practice, you can configure the stack to match your selected breaker family while maintaining safe, compliant interconnections and a clean field layout.
Key specifications include a 125A service rating, an 800A bus, and 120/208 VAC operation with 3-phase in and 1-phase out. The unit features four sockets and a five-jaw configuration, making it suitable for outdoor residential and light commercial metering. These parameters support typical feeder and subfeed arrangements while keeping wiring manageable and service options scalable.
Yes. The unit is designed for outdoor use, offering a rugged enclosure suitable for external mounting. It is UL Listed, which supports safety and regulatory compliance for outdoor residential and light commercial metering deployments. The product’s multi-meter capability and outdoor-friendly design help reduce indoor space requirements and streamline maintenance access in exterior electrical rooms.
The Eaton 3MM412RRLB carries UL Listed certification, a widely recognized safety mark for electrical equipment. This certification supports adherence to national electrical codes and industry safety standards, reducing audit risk and facilitating safer installations in residential and light commercial metering environments. Always verify project-specific code requirements, but UL Listing is a strong baseline for compliance.
The product carries Eaton’s warranty policy 25-000, offering one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. This warranty supports coverage for manufacturing defects and performance issues under normal use. For field support, technical inquiries, and replacement parts, contact Eaton’s product support or your authorized distributor.