Eaton 3MM520RBUS Residential Meter Stack - UL Listed
Part Number: 3MM520RBUS
Quick Summary
The Eaton 3MM520RBUS is a residential meter stack that consolidates metering for multi-meter services. Engineers often wrestle with space constraints, wiring complexity, and code compliance when expanding metering. UL Listed certification backs safety and code compliance, supporting safer, inspection-friendly installations. This solution reduces cabinet footprint and wiring complexity, accelerating commissioning and improving service visibility across facilities. It delivers scalability for growing metering needs while maintaining a focus on reliability and lifecycle cost. Secondary keywords like residential metering, multi-meter enclosures, and space-saving metering design reinforce its value for buyers. In procurement terms, it supports faster approvals, easier onboarding for installers, and clearer maintenance planning.
Product Information
Extended Description
3MM520RBUS Eaton: Eaton 3MM residential meter stack, Multiple meter, 200A, Al, Bus:800A, No by, Out, Depends on selected MCB, 5-J, Sockets:5, 3-ph in, 1-ph out, A-B, CCV2_X, CCVH2_X, CVS2_XMM, CV2_XMM, CVH2_XMM, Ring, Socket:200A, Incline meter, 120/208Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM520RBUS
UPC
782116883882
Product Length/Depth
13.5 in
Product Height
74.96 in
Product Width
6.87 in
Product Weight
106 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 - 3MM520RBUS
Paragraphs are structured to show Feature → Business Impact → Application in a natural, industry-focused narrative. Feature: Multiple metering with five sockets consolidates several meters into a single, field-ready enclosure for simplified commissioning in electrical enclosures. This reduces cabinet footprint and wiring complexity, accelerating commissioning and improving service visibility across facilities. Application: Ideal for multi-tenant residential and light commercial projects where space is at a premium. Paragraph 2: Feature: The unit provides 200A per meter with an 800A aluminum bus. High current capacity without oversized gear reduces installed cost while supporting future expansion across growing site footprints. Application: Suitable for main service demarcations and shared risers demanding robust bus ratings. Paragraph 3: Feature: A 3-phase in, 1-phase out configuration enables flexible metering for mixed loads. Business Impact: Reduces equipment diversity, simplifies maintenance, and improves interconnection reliability across sections of the electrical room. Application: Particularly beneficial for mixed-use buildings with both three-phase and single-phase circuits. Paragraph 4: Feature: Operating voltage of 120/208Vac ensures direct compatibility with common building distributions in modern facilities. Business Impact: Eliminates unnecessary transformers, reduces wiring runs, and speeds project timelines. Application: Suitable for new builds and retrofit projects using standard utility voltages. Paragraph 5: Feature: UL Listed safety certification confirms conformance to recognized electrical safety standards. Business Impact: Accelerates inspections, supports code compliance, and reduces risk during audits. Application: Essential for regulated markets, campuses, and data centers seeking proven safety credentials. Paragraph 6: Feature: Precisely defined dimensions and weight facilitate accurate space planning. Business Impact: Enables predictable layout modeling and straightforward enclosure integration in restricted spaces. Application: Ideal for meter rooms and equipment enclosures with stringent space constraints. Paragraph 7: Feature: Eaton warranty terms—one year from installation or eighteen months from shipment. Business Impact: Reduces lifecycle risk and supports maintenance budgeting across project phases. Application: Suitable for project rollouts and ongoing operations in utilities, property management, and industry.
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FAQs
Plan for a meter stack that accommodates five meters in a single enclosure, with 13.5 in depth, 74.96 in height, and 6.87 in width. Expect a total weight around 106 lb and the need for proper mounting in a meter room or service area. Ensure 120/208Vac compatibility and UL Listed compliance is maintained during the wiring and commissioning process.
The unit consolidates meters into one cabinet with five sockets and a 200A per meter rating, supported by an 800A aluminum bus. This reduces space requirements, simplifies wiring harnesses, shortens installation time, and improves load visibility for operators and maintenance teams.
Yes. Its multi-meter capability, 120/208Vac operation, and UL Listed safety certification make it appropriate for multi-tenant residential facilities and light commercial installations that require scalable, compliant metering within a compact footprint.
The product is UL Listed, providing recognized safety certification. This supports code compliance during inspections and reduces regulatory risk in regulated markets such as campuses, healthcare facilities, and data centers.
Warranty terms follow Eaton policy: one year from installation or eighteen months from shipment, whichever comes first. This provides protection during the initial lifecycle and aids budgeting for maintenance and replacements.