Eaton 3MM612R12RLBC Residential Meter Stack - UL Listed
Part Number: 3MM612R12RLBC
Quick Summary
Eaton 3MM612R12RLBC is a residential meter stack for multi-meter monitoring in commercial buildings. It reduces commissioning risk by consolidating meters into a single weatherproof enclosure, speeding installation and startup across new developments. UL Listed certification underpins safety and reliability for outdoor, multi-meter installations. With a 125A service and a 1200A bus, five jaws, and six sockets, it supports flexible metering configurations and three-phase in, single-phase out layouts. Designed for residential metering projects and compatible with Eaton metering products, it delivers a scalable, cost-efficient solution that helps optimize field labor, reduce wiring complexity, and improve long-term lifecycle costs. This makes it well suited for condo, apartment, and mixed-use developments.
Product Information
Extended Description
3MM612R12RLBC Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Cu, Bus:1200A, Horn bypass, Outdoor, Depends on selected MCB, 5-jaw, Sockets:6, Three-phase in, single-phase out, B-C, BR2_, BRH2_, BRHH2_, BRX2, Ringless, Socket:125A, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM612R12RLBC
UPC
786685513126
Product Length/Depth
12.26 in
Product Height
66.5 in
Product Width
7.01 in
Product Weight
83 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
Catalog Notes
Fifth jaw included at 9oclock position
Type
Multiple metering
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 3MM612R12RLBC
Consolidated metering in a single outdoor enclosure is a core feature of the 3MM612R12RLBC. By grouping multiple meters, it reduces cabinet footprint and simplifies field wiring, cutting installation time and potential miswirings. The business impact is tangible: faster commissioning, lower ongoing maintenance, and a clear, centralized energy view for multi-tenant buildings and light commercial applications where accuracy matters and budget control is essential. 125A service with a 1200A bus rating provides scalable headroom for growth and future metering needs. This arrangement minimizes the need for early upgrades and helps facilities run more efficiently as tenant loads evolve. In practice, it supports three-phase in and single-phase out configurations, making it suitable for mixed-use developments where demand varies by unit or floor. Fifth jaw at 9 o'clock and six sockets offer flexible wiring and quick field connections. The 5-jaw design, together with ringless sockets and a 125A socket rating, reduces installation time and potential contact resistance. This is particularly valuable when integrating Eaton MCBs and metering modules, enabling technicians to adapt to diverse panel layouts without costly rework. Outdoor readiness and UL Listed certification underpin safety and reliability for exposed locations. The rugged enclosure is designed for outdoor metering, providing weather resistance and consistent performance. While installation health checks are simplified, the product still supports adherence to code requirements and safety standards, a key consideration for building owners seeking dependable submetering solutions. Compatibility with Eaton metering products and modular MCB selections simplifies procurement and inventory management. The unit's six sockets and 120/208Vac operation align with common utility feeds, while the durable construction supports long service life and reduced lifecycle costs. In practice, contractors benefit from standardized Eaton components, faster procurement, and lower total installation costs across projects.
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FAQs
Key installation considerations include securing a weatherproof outdoor enclosure, ensuring adequate clearance for service access and wiring containment, and planning for six sockets with the five- jaw arrangement. Verify compatibility with the chosen MCBs, maintain proper insulation and torque on all terminations, and account for maintenance access to the fifth jaw at 9 o'clock for routine inspections.
Core specifications include a 125A service rating, 120/208Vac operating voltage, a 1200A bus, six sockets, and a five-jaw design with a fifth jaw at 9 o'clock position. The unit supports three-phase in, single-phase out configurations and is intended for outdoor metering, enabling scalable, modular energy monitoring across multiple tenants.
This meter stack is ideal for multi-tenant residential buildings, such as condominiums and apartment complexes, as well as light commercial projects with distributed metering needs. Its outdoor rating, UL Listed certification, and modular Eaton components make it suitable for outdoor submetering installations where space efficiency and easy maintenance are priorities.
The product carries UL Listed certification, signaling conformity with recognized safety standards for electrical equipment and outdoor use. This supports code compliance for outdoor metering installations and provides confidence in safety, reliability, and performance during commissioning and ongoing operation in harsh or variable environmental conditions.
Expected ROI comes from reduced installation time, fewer field wiring errors, and lower lifecycle costs due to a centralized, durable metering solution. Maintenance considerations include periodic visual inspections of outdoor joints, verifying the fifth jaw at 9 o'clock, and ensuring MCB compatibility for ongoing protection. The built-in 125A/1200A ratings support long-term scalability with minimal rework.