Eaton 37MM240R1240C52 Meter Stack - UL Listed 400A
Part Number: 37MM240R1240C52
Quick Summary
Eaton 37MM240R1240C52 is a plug-in socket meter stack designed for 3-phase commercial metering in industrial facilities. An ongoing challenge is delivering scalable, space-efficient metering that fits crowded electrical rooms and speeds up commissioning. UL Listed certification underpins safety and reliability, while the 208Y/120V network metering and 120/240V configurations support diverse site wiring. The copper bus, ringless design, lever bypass, and seven-jaws contribute to quick maintenance and predictable performance. For procurement teams, the unit’s footprint—66.625 in L × 19.375 in W × 8.75 in H—and 320 lb weight translate into planning certainty and installation efficiency, reducing project risk and total cost of ownership.
Product Information
Extended Description
37MM240R1240C52 Eaton: Eaton commercial meter stack, 37MM-3-Phase, 400A, Copper Bus, K-frame (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 35MM commercial meter stack
Catalog Number
37MM240R1240C52
UPC
786689213268
Product Length/Depth
66.625 in
Product Height
8.75 in
Product Width
19.375 in
Product Weight
320 lb
Certifications
UL Listed
Catalog Notes
Main tenant feeders can exit top, bottom, or back, If being used in outdoor application and exiting the top, mount Myer type hubs on rainproof cap. 120/240V, single-phase, three-wire systems and 208Y/120V network metering
Type
Plug-in socket
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 37MM240R1240C52
Feature → Business Impact → Application: Plug-in socket design enables fast field installation and straightforward module replacement, reducing commissioning time and downtime in commercial metering projects. This translates to lower labor costs and faster ROI for facilities managers deploying scalable energy monitoring in office campuses and retail developments. Feature → Business Impact → Application: Flexible exit options (top, bottom, or back) for main tenant feeders improve layout flexibility in constrained electrical rooms and outdoor installations, easing retrofits in retrofit projects or new builds for data centers and manufacturing facilities. Feature → Business Impact → Application: Copper 1200A bus with a ringless architecture and lever bypass enhances reliability and simplifies maintenance; technicians benefit from safer, quicker service and reduced risk during fuse or breaker replacements in heavy-use environments. Feature → Business Impact → Application: 208Y/120V network metering and 120/240V capability provide universal compatibility across multi-volt site infrastructures, supporting energy management systems and cross-site standardization in utilities-heavy facilities. Feature → Business Impact → Application: Large physical footprint with precise dimensions (66.625 in L × 19.375 in W × 8.75 in H) and a 320 lb weight deliver a stable, predictable installation envelope, aiding floor plan approvals and long-term space planning in commercial buildings and campuses.
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FAQs
The 37MM240R1240C52 is engineered as a 400 A plug-in socket meter stack designed for 3-phase commercial metering. It supports 208Y/120V network metering and 120/240V configurations, enabling seamless integration with common commercial and light industrial electrical systems. Its copper bus and lever bypass aid reliability and maintenance efficiency, while the ringless design minimizes space requirements and simplifies retrofits in existing rooms.
Main tenant feeders can exit the top, bottom, or back of the stack, offering installation flexibility to accommodate varied room layouts and outdoor applications. When used outdoors and exiting top, Myer-type hubs on a rainproof cap ensure weather protection. This versatility supports both new builds and retrofit projects in data centers, office buildings, and manufacturing facilities.
Yes, the unit is UL Listed, which confirms compliance with recognized safety standards for electrical equipment used in commercial metering. UL Listing provides assurance to installers, facility managers, and inspectors that the meter stack meets established safety requirements, reduces risk during commissioning, and supports regulatory acceptance in most North American applications.
The meter stack measures 66.625 inches in length, 19.375 inches in width, and 8.75 inches in height, with an overall weight of 320 pounds. This footprint informs cabinet, room, and mounting clearances during site planning, enabling accurate space allocation, structural considerations, and unobstructed service access for maintenance and metering operations.
Industries such as commercial real estate, data centers, healthcare facilities, and light manufacturing benefit from the Eaton 37MM240R1240C52 due to its robust 400 A capacity, 3-phase metering capability, and flexible feed exits. Typical applications include main service metering, energy management, and utility-grade monitoring in large office buildings, campus facilities, and retrofit projects requiring scalable, reliable energy measurement with installation flexibility.