Eaton commercial meter stack 37MM420R12CBC - UL Listed
Part Number: 37MM420R12CBC
Quick Summary
Eaton commercial meter stack is a modular, three-phase metering solution designed for commercial and light industrial electrical service. Specifying a meter stack that balances capacity, safety, and serviceability can be time-consuming and error-prone. It carries UL Listed certification and supports a 225 A rating, a 1200 A copper bus, and a ringless cover to streamline installation. This combination reduces field errors and shortens project timelines, while simplifying procurement for engineering teams. By aligning with common NEC safety requirements and utility metering practices, it delivers predictable performance, easier maintenance, and overall lower total cost of ownership for building owners and integrators.
Product Information
Extended Description
37MM420R12CBC Eaton: 37MM-Three-Phase Commercial Meter Stack Modules, EHD3_ , CC3_X, CVS3_X, CV3_X, CVH3_X secondary breaker, 225A socket, 208Y/120V, Ringless, Copper 1200A bus, Lever bypass, Seven-jaws, 4 sockets, B-C phase balance
Product Name
Eaton commercial meter stack
Catalog Number
37MM420R12CBC
UPC
786685708454
Product Length/Depth
67 in
Product Height
10 in
Product Width
20 in
Product Weight
80 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
Amperage Rating
225 A
Bypass
Lever
Bus ampicity
1200 A
Cover
Ringless
Number of meter socket
1
Phase in or out
Three-phase in, three-phase out
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 37MM420R12CBC
Feature → Business Impact → Application: Three-phase metering capability with 208Y/120V service enables accurate load monitoring for multi-circuit commercial loads, improving demand management and energy accounting. Application: Ideal for service entrances in office campuses, retail centers, and light industrial facilities requiring coordinated phase balance and precise billing. Feature → Business Impact → Application: Lever bypass and one-meter socket allow quick isolation and testing during maintenance, reducing downtime and exposure risk for technicians while preserving service continuity. Application: Handy for facilities performing routine metering checks or needing rapid fault isolation in critical power paths. Feature → Business Impact → Application: Ringless cover enhances safety and aesthetics while simplifying installation, lowering arc-flash exposure during cover removal and enabling easier backbox integration. Application: Retrofit projects and new builds in data centers, hospitals, and commercial spaces benefit from cleaner, safer meter enclosures. Feature → Business Impact → Application: Copper 1200 A bus and robust enclosure provide high fault current capacity with low impedance paths, improving reliability and protection coordination. Application: Beneficial in sites with high inrush and heavy equipment like HVAC systems and manufacturing lines. Feature → Business Impact → Application: UL Listed certification and Eaton warranty policy provide regulatory confidence and post-sale support, aiding compliance and reducing risk. Application: Suitable for enterprise-scale projects and spec-driven procurement that require documented safety credentials.
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FAQs
The 37MM420R12CBC is designed for commercial and light industrial service entrances, featuring a single meter socket, lever bypass for quick isolation, ringless cover for safer access, and a 208Y/120V three-phase in/out configuration. Plan for a footprint of roughly 67 in length, 20 in width, and 10 in height, with an approximate weight of 80 lb. Ensure enclosure ratings and mounting provisions align with site electrical codes and utility requirements.
The 225 A rating supports substantial commercial loads while maintaining precise metering fidelity for energy accounting. The 208Y/120V service enables standard commercial voltages, facilitating accurate phase balance across three phases. The copper 1200 A bus enhances fault current capability and reduces impedance, improving protection coordination and minimizing nuisance trips during startup surges.
This meter stack excels in office campuses, retail centers, data centers, hospitals, and light manufacturing environments where reliable three-phase metering is required. Its combination of a single socket, lever bypass, ringless cover, and space-efficient footprint makes retrofit projects and new builds easier to spec, install, and maintain while delivering accurate energy data for billing and energy management.
The 37MM420R12CBC is UL Listed, indicating compliance with recognized safety standards for electrical equipment. This certification supports regulatory audits, reduces compliance risk, and helps streamline procurement in projects requiring documented safety credentials. Always verify any site-specific requirements and ensure the product remains within the scope of UL’s listed applications.
The meter stack aligns with Eaton’s warranty policy (one year from installation or 18 months from shipment, whichever occurs first), providing post-sale support and coverage for manufacturing defects. The lever bypass design reduces maintenance time, while the durable copper bus and ringless cover minimize service interruptions and replacement costs, delivering a favorable total cost of ownership over the equipment lifecycle.