Eaton commercial meter stack 37MM240R1240C42 - UL Listed
Part Number: 37MM240R1240C42
Quick Summary
Eaton commercial meter stack 37MM240R1240C42 is a plug‑in socket 3‑phase metering assembly designed for 208Y/120V networks up to 400A in commercial and light industrial settings. The design addresses the common pain point of integrating metering with field-installed distribution hardware, reducing install times and potential wiring errors. This unit ships with one 400A and one 250A breaker already installed, a 400A socket, and a copper bus with lever bypass for fast, safe maintenance. It offers ringless, 1200A aluminum bus options and factory A-B phase balance to support accurate demand metering and phase balancing. It’s UL Listed, ensuring safety compliance, while the 37MM form factor supports scalable, future-ready installations.
Product Information
Extended Description
37MM240R1240C42 Eaton: Eaton commercial meter stack, 37MM-3-Phase, 400A, Copper Bus, K-frame (1) 400A 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
37MM240R1240C42
UPC
786689213237
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 - 37MM240R1240C42
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: Plug-in socket design in the Eaton 37MM240R1240C42 commercial meter stack streamlines installation by allowing quick, secure connections at the meter base. Business Impact: Reduces commissioning time and wiring errors, enabling faster project turnover and safer field work. Application: Ideal for new builds or upgrades in commercial and light industrial facilities where space and time are at a premium. Feature: Pre-installed 400A and 250A breakers with a 400A socket minimize field assembly steps and procurement complexity. Business Impact: Fewer part mismatches, lower labor costs, and quicker deployment. Application: 3‑phase metering in office campuses, retail centers, and small industrial sites needing reliable power distribution. Feature: Copper bus with ringless and optional 1200A aluminum bus supports high current and low resistance pathways. Business Impact: Improves efficiency, reduces voltage drop, and enhances fault performance during maintenance. Application: High‑demand commercial applications requiring dependable energy transfer. Feature: Factory A‑B phase balance delivers improved metering accuracy across uneven load profiles. Business Impact: Better energy management, accurate demand measurement, and enhanced billing integrity. Application: Data centers, mixed-use developments, and retail complexes. Feature: Flexible exit options and outdoor readiness with rainproof cap guidance (top, bottom, or back exits). Business Impact: Installation versatility reduces enclosure modification and enables outdoor metering when needed. Application: Outdoor yards, external meters, and retrofit projects where weatherproofing is a concern. UL Listed certification supports compliance across jurisdictions.
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FAQs
The 37MM240R1240C42 is designed for 208Y/120V, 3‑phase networks up to 400A, featuring a plug‑in socket and top/bottom/back exit options. With UL Listed safety compliance, it supports commercial and light industrial installations, enabling straightforward integration with existing distribution hardware and copper bus connections for reliable energy metering.
The plug‑in socket design reduces field wiring steps, minimizes potential miswiring, and accelerates field commissioning. By preassembling critical components and providing secure, fast connections, technicians can complete metering assemblies faster, lowering labor costs and project timelines while maintaining high safety standards.
Outdoor suitability is supported with installation flexibility and notes for rainproof hub usage. If exiting the top in outdoor applications, mount Myer type hubs on a rainproof cap. The unit’s UL Listed status further reinforces safety in varied environments, while the top/bottom/back exit options enable adaptable enclosure configurations.
This Eaton meter stack is UL Listed, indicating approved safety compliance for commercial metering assemblies. Additional safety features include copper bus construction, ringless bus options for robust current handling, and lever bypass provisions that simplify safe maintenance during service activities.
The unit combines metering and distribution in a compact plug‑in form with pre‑installed breakers, reducing procurement and install time. Phase balance accuracy improves energy management and billing reliability, while flexible exit options and outdoor readiness lower retrofit risks and enclosure costs, delivering faster ROI for facilities teams.