Eaton commercial meter stack 37MM420R12CAB - UL Listed
Part Number: 37MM420R12CAB
Quick Summary
Eaton commercial meter stack 37MM420R12CAB provides a compact, three-phase metering and distribution solution for commercial facilities. This unit addresses space constraints and wiring complexity by consolidating metering, protective devices, and bus connections into a single enclosure. UL Listed certification supports safety and code compliance in busy service entrances, giving engineers confidence in installation and ongoing operation. With a 225 A rating and copper 1200 A bus, it scales to growing loads while maintaining protection integrity. The 67 in length, 20 in width, and 10 in height deliver a balance of capacity and footprint, enabling streamlined procurement and quicker field deployment. This product complements Eaton’s metering ecosystem, delivering reliable performance and turnkey integration for project teams.
Product Information
Extended Description
37MM420R12CAB 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, A-B phase balance
Product Name
Eaton commercial meter stack
Catalog Number
37MM420R12CAB
UPC
786685708461
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 - 37MM420R12CAB
Feature: 225 A amperage rating combined with 1200 A bus ampacity. Business Impact: Supports higher demand without expanding multiple enclosures, reducing capital expenditure and wiring complexity. Application: Fits mid-size commercial facilities with evolving load profiles. Feature: 208Y/120V three-phase in/out. Business Impact: Enables direct compatibility with common commercial electrical systems, minimizing transformer needs and simplifying service entrance design. Application: Retail centers, office campuses, and light industrial spaces. Feature: Ringless cover with lever bypass. Business Impact: Improves maintenance efficiency and safety by providing quick, tool-free access while enabling fast isolation during service work. Application: Routine inspections and fault isolation in busy installations. Feature: Four sockets and one meter socket in a single stack. Business Impact: Reduces the number of required enclosures and simplifies metering connections, shortening commissioning time. Application: New construction or retrofit projects where space is at a premium. Feature: Compact footprint and durable enclosure (67 in L × 20 in W × 10 in H; ~80 lb). Business Impact: Eases installation logistics and delivers robust protection in a space-conscious package. Application: Multi-tenant buildings and data centers seeking efficient metering solutions. Feature: UL Listed certification and Eaton warranty policy. Business Impact: Delivers assured compliance and post-sale support, lowering risk and total cost of ownership. Application: Regulatory adherence for commercial metering installations.
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FAQs
Installers should plan for a 67 in L × 20 in W × 10 in H footprint with an 80 lb enclosure. Ensure appropriate space for lever bypass access, ringless cover operation, and clearance for cables entering the 4 socket plus 1 meter socket layout. Verify 208Y/120V supply and three-phase in/out compatibility with the site electrical system.
The 225 A rating handles the main servicer load while the copper 1200 A bus permits higher fault and continuous current capacity within the stack. This combination supports load growth and improves protection coordination without needing additional enclosures, reducing capital and installation time.
Yes. The 37MM420R12CAB is designed to integrate within Eaton’s three-phase metering ecosystem and is compatible with secondary breakers in related modules (EHD3_, CC3_X, CVS3_X, CV3_X, CVH3_X) for expanded protection and metering options, enabling scalable configurations for commercial installations.
The unit is UL Listed, ensuring compliance with applicable safety and electrical standards for commercial metering installations. This certification supports code compliance during inspections and reduces the risk of non-conformance during project approvals, contributing to safer, more reliable operation.
Lever bypass allows quick isolation for maintenance without pulling disconnects, reducing downtime and labor costs. A ringless cover simplifies field access and reduces wear on gasket interfaces, contributing to longer service life. Together, these features lower total cost of ownership through faster service, easier upgrades, and improved reliability.