Eaton 3MM312C2AB Residential Meter Stack - UL Listed
Part Number: 3MM312C2AB
Quick Summary
Eaton 3MM residential meter stack enables multi-metering in compact residential and light commercial electrical rooms. When space is tight, wiring layouts, labeling accuracy, and coordination with protective devices become a frequent bottleneck; this unit simplifies mounting and reduces installation risk. UL Listed safety certification underpins compliance with electrical codes, and the indoor-rated design fits typical building interiors for reliable, year-round operation. The one-year warranty and Eaton’s proven design help minimize lifecycle costs, while compatibility with common MCBs enhances procurement efficiency. In multi-dwelling, mixed-use, and service-upgrade projects, it delivers scalable, space-efficient metering without sacrificing safety.
Product Information
Extended Description
3MM312C2AB Eaton: Eaton 3MM residential meter stack, Multiple metering, 125A, Copper, Bus:800A, No bypass, Indoor, Depends on selected MCB, Five-jaw, Sockets:3, 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
3MM312C2AB
UPC
782114631881
Product Length/Depth
12.26 in
Product Height
41.8 in
Product Width
7.01 in
Product Weight
57 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: Multi-metering capability supports multiple meters within a single stack. Benefit: Reduces space requirements, simplifies labeling, and improves service coordination, enabling efficient metering for multifamily and small commercial buildings. Application: Ideal for compact electrical rooms and service upgrades where future expansion is anticipated. Long-tail keywords: multi-metering solution, residential metering, space-efficient metering. Feature: 125A main service with 800A copper bus. Benefit: Provides ample headroom for load growth and robust fault current paths, enhancing system reliability. Application: Suitable for evolving residential or light-commercial feeders requiring scalable capacity. Long-tail keywords: copper bus, bus rating, load growth. Feature: Five-jaw sockets and three-phase in, single-phase out configuration. Benefit: Simplified wiring topology with flexible protection options and straightforward commissioning. Application: Common in mixed-phase installations and switchgear integration. Long-tail keywords: three-phase in, single-phase out, socket configurations. Feature: Indoor installation, no bypass, UL Listed. Benefit: Safer, code-compliant installations with reduced maintenance and safer metering operations. Application: Perfect for indoor meter stacks in apartment buildings and office spaces. Long-tail keywords: indoor metering, UL Listed, safety certification. Feature: Sockets: A-B, BR2_, BRH2_, BRHH2_, BRX2; Ring; Socket:125A; 120/208 Vac. Benefit: Broad compatibility with Eaton MCBs and accessory sockets; Installation flexibility reduces selection risk. Application: Supports diverse metering schemes and easy field upgrades. Long-tail keywords: socket compatibility, MCB compatibility, 120/208 Vac.
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FAQs
The 3MM312C2AB is engineered for indoor use in residential and light commercial settings where space is at a premium. Its multi-metering capability, UL Listed safety, and compatibility with common Eaton MCB configurations (A-B, BR2_, BRH2_, BRHH2_, BRX2) support organized, scalable service assemblies in corridors, utility rooms, and basement or mechanical spaces. Proper installation requires adherence to local electrical codes and building standards, and the unit’s dimensions (12.26 in L, 41.8 in H, 7.01 in W) help plan mounting clearances.
The Eaton 3MM312C2AB is designed for multi-metering with a 125A main service and an 800A copper bus rating, supporting multiple metering circuits within a compact footprint. It features five-jaw sockets and configured three-phase in with single-phase out, enabling diverse service arrangements—ideal for multi-dwelling or mixed-use buildings where meter segregation and reliability are critical.
Key specs include 120/208 VAC operation, three-phase in and single-phase out, and compatibility with common Eaton MCB sockets (A-B, BR2_, BRH2_, BRHH2_, BRX2). The unit ships with a UL Listed safety rating and uses copper bus components with a 125A main and 800A bus rating, facilitating robust, scalable metering for evolving electrical loads in indoor environments.
The meter stack carries UL Listed certification for safety and code compliance. Warranty coverage follows Eaton's policy: one year from installation or eighteen months from shipment, whichever occurs first. This combination of certification and warranty supports reduced risk during commissioning and throughout the system’s lifecycle, making it suitable for new installs or service upgrades in constrained spaces.
Eaton’s 3MM312C2AB tackles common challenges such as space constraints, labeling accuracy, and wiring complexity by providing a compact footprint, clear metering pathways, and wide socket compatibility (A-B, BR2_, BRH2_, BRHH2_, BRX2). Its indoor design and no-bypass configuration enhance safety and reliability, while the ability to adapt with different MCBs minimizes customization time during field upgrades or renovations.