Eaton 37MM240R1240C25 Meter Stack - UL Listed Socket
Part Number: 37MM240R1240C25
Quick Summary
The Eaton 37MM240R1240C25 meter stack provides a modular three-phase metering solution for commercial electrical panels. This design addresses space constraints and wiring complexity by delivering a compact, plug-in meter stack that can scale with system needs. UL Listed certification underpins safety and reliability in demanding environments, while its copper bus and balanced phase capabilities support accurate load measurement. For engineers and procurement teams, the value lies in predictable performance, ease of installation, and long-term maintenance predictability across commercial and industrial installations.
Product Information
Extended Description
37MM240R1240C25 Eaton: Eaton commercial meter stack, 37MM-3-Phase, 400A, Copper Bus, K-frame (1) 250A and (1) 350A 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
37MM240R1240C25
UPC
786689213183
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 - 37MM240R1240C25
Feature → Business Impact → Application: Three-phase metering with 208Y/120V network support enables precise energy measurement for commercial buildings, reducing billing disputes and improving demand management. Benefit: Accurate data drives better energy procurement and peak-shaving strategies, lowering overall operating costs. Application: Suitable for office towers, retail centers, and light industrial facilities needing dependable metering with balanced A-B phases. Feature → Business Impact → Application: Copper bus with 1200A aluminum bus framework provides robust current handling and longevity, improving system reliability. Benefit: Fewer maintenance interruptions and longer service life in high-load environments. Application: Utility-grade metering points in large electrical rooms or switchgear assemblies. Feature → Business Impact → Application: Ringless design and lever bypass simplify installation and servicing, decreasing downtime and labor costs. Benefit: Faster commissioning and easier fault isolation for field technicians. Application: Retrofit projects and new builds where quick turnarounds are critical. Feature → Business Impact → Application: Factory A-B phase balance and 400A socket offer ready-to-wire compatibility with common commercial panel architectures. Benefit: Reduced integration risk and smoother sub-feed distribution. Application: New construction and retrofit metering in commercial spaces with standard 208Y/120V systems. Feature → Business Impact → Application: Meets UL Listed safety standards, providing confidence for compliance audits and insurance requirements. Benefit: Improved regulatory alignment and reduced risk during inspections. Application: Data-center-adjacent facilities and high-occupancy buildings requiring proven safety certifications.
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FAQs
The 37MM240R1240C25 is designed for 208Y/120V networks with a copper bus and a 400A socket, supporting common commercial panel architectures. It features a plug-in socket and lever bypass for straightforward installation and service, with space and mounting considerations aligned to standard A-B phase balance configurations. For retrofit projects, verify cabinet dimensions (66.625 in L x 19.375 in W x 8.75 in H) and bus compatibility prior to ordering.
Key specs include a 400A main rating, 208Y/120V three-wire system, copper bus with an aluminum 1200A bus option, and a 66.625 in length, 19.375 in width, 8.75 in height footprint. The unit comes with (1) 250A and (1) 350A breakers installed and a 400A socket, designed for ringless installations and factory A-B phase balance.
For outdoor use, the product notes suggest mounting Myer type hubs on rainproof caps if exiting at the top. The meter stack supports outdoor applications with provisions for various feeder exit orientations. Always confirm enclosure compatibility, weatherproofing requirements, and local code compliance before field installation to ensure long-term reliability.
The 37MM240R1240C25 is UL Listed, providing recognized safety certification for electrical installations and equipment. This certification supports compliance during inspections and aligns with typical insurance and facility safety requirements for commercial metering assemblies. Always cross-check with local electrical codes and project specifications to ensure full regulatory alignment.
Deploying the 37MM240R1240C25 can reduce maintenance downtime due to its plug-in socket design and the lever bypass feature, simplifying field servicing. Precise three-phase metering improves energy usage visibility and cost allocation, supporting demand-management initiatives and potential energy savings. The combination of robust copper/aluminum bus construction and UL Listed certification contributes to longer intervals between major maintenance and better lifecycle predictability.