Eaton 37MM140HR1240C Meter Stack - UL Listed
Part Number: 37MM140HR1240C
Quick Summary
Eaton commercial meter stack delivers compact three-phase metering for commercial buildings and industrial facilities. End users often contend with crowded panels, wiring clutter, and retrofit compatibility when expanding power metering. UL Listed safety certification and adherence to industry standards help ensure compliance and peace of mind on job sites. This solution integrates with existing energy-management strategies, supports scalable expansion, and aligns with typical data-center, campus, and storefront power-distribution workflows. By delivering reliable metering with a copper 1200 A bus and lever bypass, it reduces downtime and simplifies maintenance for field technicians. These factors translate into measurable efficiency gains and lower total cost of ownership.
Product Information
Extended Description
37MM140HR1240C Eaton: 37MM-Three-Phase Commercial Meter Stack Modules, 400A, K-frame included secondary breaker, 400A socket, 208Y/120V, Ringless, Copper 1200A bus, Lever bypass, Seven-jaws, 1 socket, Factory A-B phase balance, Landis and Gyr
Product Name
Eaton commercial meter stack
Catalog Number
37MM140HR1240C
UPC
786685481098
Product Length/Depth
49 in
Product Height
10 in
Product Width
26 in
Product Weight
98 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
Catalog Notes
Main tenant breakers can exit top, bottom or back. If being used in outdoor application and exiting the top, mount Myer type hubs on rainproof cap. 208Y/120V, three-phase, four-wire 240/120V, three-phase, four-wire delta B-phase is high leg
Bus material
Copper
Bus Rating
1200 A
Number of jaws
Seven-jaw
Amperage Rating
400A
Number of meter socket
1
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 37MM140HR1240C
Feature: 400 A amperage rating with a 1200 A copper bus. Business Impact: Supports high-load commercial and light-industrial circuits with minimal voltage drop, improving metering accuracy and reliability. Application: Ideal for mid to large power distribution panels in offices, retail complexes, and light manufacturing. Feature: Seven-jaw, one-meter-socket design. Business Impact: Ensures secure, scalable connections with straightforward maintenance, reducing inspection time and failure points. Application: Streamlines installation in new builds and upgrades where quick access matters for metering integrity. Feature: Ringless construction and lever bypass. Business Impact: Facilitates faster servicing and safer fault isolation, lowering downtime during routine maintenance. Application: Useful in facilities that require minimal panel downtime during routine checks or meter replacements. Feature: Flexible main-breaker exits (top, bottom, or back). Business Impact: Simplifies retrofits and space planning by accommodating existing panel layouts without a full rebuild. Application: Data centers, campuses, and multi-tenant facilities with varied enclosure configurations. Feature: Outdoor-capable mounting notes and compatibility with 208Y/120V three-phase four-wire systems. Business Impact: Expands deployment options while maintaining compliance with standard distribution schemes. Application: Suitable for both indoor electrical rooms and protected outdoor installations in accordance with catalog notes. Feature: UL Listed and documented warranty. Business Impact: Reduces regulatory risk and provides a defined after-sale support window, supporting total cost of ownership reductions. Application: Procurement and commissioning in regulated environments where certification and service terms matter.
Get a Quick Quote for a Eaton 37MM140HR1240C
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton 37MM140HR1240C?
Enquire Now
FAQs
Begin by confirming panel space for a single meter socket and the seven-jaw configuration. The unit supports main tenant breakers exiting top, bottom, or back, which simplifies retrofits. For outdoor top-exit installations, install Myer-type hubs beneath a rainproof cap. Ensure 208Y/120V three-phase four-wire wiring and copper bus connections are correctly seated before energizing. Schedule commissioning with proper lockout/tagout procedures.
The meter stack provides a 400 A amperage rating with a 1200 A copper bus, supporting substantial load currents. It operates on 208Y/120V three-phase four-wire systems and includes a seven-jaw socket design with one meter socket. These specs enable accurate metering for mid-to-large commercial loads while delivering reliable fault paths and reduced voltage drops in distribution panels.
Catalog notes indicate outdoor top-exit installations require rainproof hub mounting, and the unit is designed to be installed in protected or appropriate outdoor enclosures following standard electrical codes. The copper-bus construction and ringless design also support resilient service in challenging environments when properly enclosed and maintained.
The Eaton 37MM140HR1240C is UL Listed, signaling compliance with recognized safety standards for electrical equipment. This certification helps meet code requirements and supports safer installation and operation in commercial and industrial facilities.
Maintenance is aided by the leveraged lever bypass and the ability to exit breakers from top, bottom, or back, reducing downtime during servicing. The warranty follows Eaton's policy (25-000), offering one year from installation or eighteen months from shipment, whichever occurs first. Together, these factors contribute to lower downtime costs and improved lifecycle ROI.