Eaton 3MM412C2AB Residential Meter Stack - UL Listed
Part Number: 3MM412C2AB
Quick Summary
The Eaton 3MM residential meter stack is a compact, multi-metering solution for residential service panels. Operators and engineers often battle crowded panels and wiring complexity when adding metering for tenants or sub-loads. UL Listed safety certification underpins the design, and regional requirements such as CE marking or IP considerations may apply in international deployments. With indoor installation and compatibility with Eaton MCBs, this stack helps streamline panel layouts while enabling precise load management. Ideal for apartment buildings, multifamily housing, or small commercial spaces seeking compliant, scalable metering and improved energy visibility. Efficient installation, reduced service calls, and predictable maintenance support better lifecycle costs.
Product Information
Extended Description
3MM412C2AB Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, No bypass, Indoor, Depends on selected MCB, Five-jaw, Sockets:4, Three-phase in, single-phase out, A-B, BR2_, BRH2_, BRHH2_, BRX2, Ring, Socket:125A, 120/208 Vac
Product Name
Eaton 3MM residential meter stack
Catalog Number
3MM412C2AB
UPC
782114631898
Product Length/Depth
12.26 in
Product Height
48.5 in
Product Width
7.01 in
Product Weight
59 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
Feature: Multiple metering with 125A service and copper bus rated 800A. Business Impact: Enables accurate, concurrent measurement for multi-tenant or demand-side management, reducing the need for separate meters and simplifying reporting. Application: Residential or small commercial service panels requiring consolidated metering. Feature: Five-jaw assembly with four sockets and 125A socket options. Business Impact: Streamlines wiring and reduces field labor during installation, improving project timelines. Application: New builds and panel upgrades where quick, reliable metering termination is critical. Feature: Three-phase in, single-phase out capability, indoor installation, and 120/208 Vac operation. Business Impact: Supports diverse load profiles and flexible growth while maintaining safety and efficiency. Application: Mixed-load residential or light commercial environments. Feature: No bypass design and compatibility with Eaton MCB families BR2, BRH2, BRHH2, BRX2. Business Impact: Enhances metering accuracy and safety, enabling precise circuit protection and straightforward upgrades. Application: Retrofit projects and new installations with standard Eaton protection devices. Feature: Compliance and warranty framework including UL Listing and Eaton’s 25-000 policy. Business Impact: Provides risk mitigation, defined service terms, and predictable maintenance costs. Application: Procurement and long-term Asset management for electrical distribution systems. Feature: Dimensions, weight, and mounting footprint aligned for indoor racks and enclosure spaces. Business Impact: Reduces enclosure depth and improves fit in constrained spaces, lowering installation risk. Application: Compact electrical rooms, multi-dwelling units, and retrofit panels.
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FAQs
The 3MM412C2AB is designed for indoor residential service panels and supports multiple metering configurations with standard Eaton MCBs (BR2, BRH2, BRHH2, BRX2). It integrates into existing panel layouts to simplify metering architecture and improve accuracy without requiring a complete panel redesign.
Key specs include 125A service with a copper bus rated for 800A, five-jaw terminal configuration, four sockets, three-phase in with single-phase out, and operation at 120/208 VAC. The unit is UL Listed for safety and indoor use.
Plan for indoor mounting within a suitable enclosure, ensure compatibility with Eaton MCBs, and verify space for 125A sockets and four sockets total. Take into account the need for proper venting, clearance, and access for wiring terminations and routine maintenance.
Yes, the 3MM412C2AB carries UL Listed safety certification. The warranty follows Eaton’s policy: one year from installation or eighteen months from shipment, whichever occurs first, providing coverage for manufacturing defects and early-life failures.
Multi-metering enables separate load monitoring and tenant energy analysis, supports better demand management, reduces the need for multiple standalone meters, and improves reporting accuracy. This translates into clearer energy visibility and potentially lower operating costs over the lifecycle of the installation.