Eaton 37MM240R124052 Commercial Meter Stack - UL Listed
Part Number: 37MM240R124052
Quick Summary
Eaton commercial meter stack provides compact three-phase metering for industrial facilities' service entrances. It helps engineers overcome panel space constraints by consolidating metering into a single, accessible assembly. UL Listed safety certification ensures regulatory compliance, while 208Y/120V service and a 400A rating support reliable utility-grade power. The module ships with a built-in 400A socket and pre-installed breakers (one 350A and one 250A), simplifying installation and reducing field engineering time. With ringless cover, 66.625 inch length and 320 lb weight, it delivers a durable, service-ready footprint for commercial and light industrial facilities. The assembly supports A-B phase balance, lever bypass, seven-jaws, and dual sockets, enabling straightforward commissioning and phased maintenance without system downtime. Designed for 208Y/120V applications, UL Listed compliance, and Eaton warranty policy 25-000, it aligns with industry standards while delivering predictable ROI.
Product Information
Extended Description
37MM240R124052 Eaton: 37MM-3-Phase Commercial Meter Stack Modules, 400A, K-frame included secondary breaker, (1) 350A and (1) 250A 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
37MM240R124052
UPC
782116995738
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 - 37MM240R124052
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 400A amperage rating with two sockets and pre-installed breakers (one 350A, one 250A). Business Impact: Enables immediate service readiness and reduces field wiring work, cutting commissioning time and minimizing on-site engineering costs. Application: Ideal for mid-size commercial facilities seeking reliable, ready-to-wire metering for utility-grade loads. Paragraph 2: Feature: 208Y/120V service with ringless cover and a 66.625 in length. Business Impact: Maximizes space efficiency and simplifies installation in equipment rooms with restricted depth, improving cabinet utilization. Application: Suitable for retrofit projects and new builds where footprint is a critical constraint. Paragraph 3: Feature: A-B phase balance, seven-jaws, lever bypass, and 1200A bus architecture. Business Impact: Enhances safety during maintenance, reduces downtime, and supports smooth phased servicing of critical loads. Application: Data centers and manufacturing facilities requiring predictable power quality. Paragraph 4: Feature: UL Listed certification and built-in safety features. Business Impact: Provides regulatory confidence for procurement and reduces validation time in audits. Application: Procurement in regulated environments and installations with strict safety requirements. Paragraph 5: Feature: Durable aluminum bus and heavy-duty construction; weight 320 lb. Business Impact: Long service life under frequent access, lowering lifecycle costs and maintenance intervals. Application: High-use commercial installations with routine metering checks. Paragraph 6: Feature: Compatibility with K-frame secondary breaker and dual sockets. Business Impact: Streamlines installation with compatible components and reduces custom wiring needs. Application: New builds and upgrade projects that align with Eaton’s standard configurations.
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FAQs
This unit is a 66.625 in long, 19.375 in wide, and 8.75 in tall assembly weighing about 320 lb. It features two sockets, ringless front, and is designed for 208Y/120V service. Plan for appropriate electrical room clearances and compatible mounting surfaces to support its 400A service footprint and UL Listed safety features.
The meter stack is rated for 400A and ships with pre-installed breakers: one 350A and one 250A. It includes two sockets and a 400A socket, enabling ready-to-wire metering for three-phase service and simplifying field wiring during installation.
Yes. It is a 3-phase, 208Y/120V metering solution with phase balance capabilities, making it suitable for commercial buildings, light industrial facilities, and similar applications that require robust, accurate power monitoring and balanced phasing for critical loads.
The unit is UL Listed, signifying compliance with established safety standards. This certification supports regulatory alignment during audits and procurement processes, helping reduce compliance-related delays in project approvals.
Pre-installed breakers and a ringless, lever-bypass design reduce commissioning time and maintenance downtime. The durable aluminum bus and integrated A-B phase balance contribute to longer service life and predictable power quality, delivering lower lifecycle costs and improved ROI for facilities with frequent metering checks.