Eaton 37MM240R124053 Commercial Meter Stack - UL Listed
Part Number: 37MM240R124053
Quick Summary
Eaton commercial meter stack is a modular, 3-phase metering solution engineered for commercial and light industrial distribution. This design helps facilities overcome space constraints while delivering balanced phase delivery in upgrade projects. UL Listed certification underpins safety and reliability in demanding installations, and Eaton backs it with a clear warranty policy to minimize ownership risk. The 37MM240R124053 model integrates a 400A service with a ringless cover, factory A-B phase balance, and ready-to-install secondary breakers, supporting fast, compliant deployments. In practice, this means reduced commissioning time, predictable performance, and improved overall project value for electrical contractors, specifiers, and facility managers seeking robust metering infrastructure.
Product Information
Extended Description
37MM240R124053 Eaton: 37MM-3-Phase Commercial Meter Stack Modules, 400A, K-frame included secondary breaker, (1) 350A and (1) 300A breaker installed, 400A socket, 208Y/120V, Ringless, Al 1200A bus, Lever bypass, Seven-jaws, 2 sockets, Factory A-B phase balance
Product Name
Eaton commercial meter stack
Catalog Number
37MM240R124053
UPC
782116995745
Product Length/Depth
66.625 in
Product Height
8.75 in
Product Width
19.375 in
Product Weight
320 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
Number of sockets
2
Amperage Rating
400A
Cover
Ringless
Eaton Specification Sheet - 37MM240R124053
Selling Policy 25-000 - Distribution and Control Products and Services
Feature → Business Impact → Application: The 400A amperage rating delivers capacity for mid-to-large commercial loads, enabling fewer interruptions and better service continuity in retail, office, and light industrial facilities; installations benefit from improved efficiency and simplification of service upgrades. Feature → Business Impact → Application: Ringless cover design enhances safety and concealment while streamlining maintenance access during metering or panel servicing in data centers and campuses. Feature → Business Impact → Application: Two sockets alongside a 400A socket support main and subfeed configurations, reducing cabinet depth requirements and enabling flexible layouts in retrofit projects for multifamily buildings. Feature → Business Impact → Application: 208Y/120V compatibility aligns with standard commercial distribution practices, simplifying compatibility with downstream equipment, breakers, and control systems across office complexes and healthcare facilities. Feature → Business Impact → Application: Aluminum 1200A bus structure improves current-carrying capacity with a lighter footprint, enabling longer service life and reduced thermal stress in high-load environments like grocery stores and mixed-use developments. Feature → Business Impact → Application: Lever bypass and seven-jaws provide safe maintenance bypass capability and secure grounding during service, minimizing downtime in critical environments such as hospitals or data centers. Feature → Business Impact → Application: Factory A-B phase balance supports power quality and efficient load distribution, reducing neutral currents and improving equipment longevity in large commercial installations. Certifications and safety notes → Business Impact → Application: UL Listed certification ensures compliance with safety standards, fostering smoother project approvals and reducing risk during procurement for regulated industries.
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FAQs
The meter stack is designed for 208Y/120V three-phase service with a 400A rating and two sockets, incorporating a ringless cover and aluminum 1200A bus. It supports standard metering configurations and can be integrated with compatible Eaton and non-Eaton distribution equipment that accepts 66.625 in length assemblies, simplifying retrofit projects.
Plan for a 66.625 in depth, 8.75 in height, and 19.375 in width footprint with a 320 lb weight. Ensure space for the lever bypass, seven-jaws, and two sockets plus a 400A socket. Verify the location supports a 208Y/120V system and that the enclosure is UL Listed compliant for safe field setup.
Eaton provides a warranty policy (Selling Policy 25-000) offering one year from installation or eighteen months from shipment, whichever occurs first, ensuring coverage for manufacturing defects and supporting service continuity in projects.
The product is UL Listed, indicating compliance with rigorous safety standards for electrical equipment. This certification streamlines procurement, aligns with building codes, and supports regulatory approvals for commercial metering installations.
Key benefits include space efficiency through a compact footprint, robust 400A service capacity, safe maintenance with lever bypass, and prepared phase balance for improved power quality, all contributing to faster commissioning, reduced downtime, and lower lifecycle costs in commercial installations.