Eaton 35MM240R1240C39 Meter Stack - UL Listed
Part Number: 35MM240R1240C39
Quick Summary
Eaton 35MM240R1240C39 meter stack is a plug-in socket, three-phase metering module designed for commercial panels. Retrofits and panel upgrades can cause costly downtime; this unit offers top, bottom, or back feeder exits and dual sockets to simplify installation. UL Listed safety certification supports regulatory compliance, with 208Y/120V networks and 120/240V single-phase configurations in mind. The combination of 400A capacity, copper 1200A bus, and lever bypass delivers reliable metering with scalable future-proofing for growing facilities. By aligning with Eaton's meter stack ecosystem, it reduces procurement complexity and accelerates project timelines. This makes it a practical choice for data centers, commercial offices, and multi-tenant buildings seeking accurate energy measurement. Think of it as a robust, standards-aligned metering hub that minimizes field rewiring while maximizing service reliability.
Product Information
Extended Description
35MM240R1240C39 Eaton: Eaton 35MM commercial meter stack, 3-Phase Module, 400A, K-frame included secondary breaker, (1) 300A and (1) 200A breaker installed, 400A socket, 208Y/120V, Ringless, Cu 1200A bus, Lever bypass, Five-jaws, 2 sockets
Product Name
Eaton 35MM commercial meter stack
Catalog Number
35MM240R1240C39
UPC
786689166014
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
Number of jaws
Five-jaw
Number of sockets
2
Phase
Three-phase in, single-phase out
Amperage Rating
400A
Residential and Light Commercial, Metering Products, Volume 1 Tab 4
Eaton Specification Sheet - 35MM240R1240C39
Feature: 400A rating with dual breakers (300A installed and 200A installed) and five-jaw plug-in sockets. Business impact: supports large commercial loads without requiring a full panel upgrade, enabling faster project timelines and reduced upfront costs. Application: ideal for mid- to large-scale commercial metering where reliable, scalable current handling is necessary. Feature: Three-phase in, single-phase out configuration with 208Y/120V network metering. Business impact: simplifies integration into common regional power architectures while preserving accuracy and safety. Application: suitable for offices, data centers, and multi-tenant facilities that require precise energy accounting. Feature: 66.625 in length, 19.375 in width, 8.75 in height, copper 1200A bus, and lever bypass. Business impact: compact footprint for dense panels, fast service isolation, and reduced maintenance time. Application: retrofit or new installations in limited-space electrical rooms. Feature: Top, bottom, or back exit options with rainproof cap compatibility. Business impact: installation flexibility and outdoor readiness, lowering field wiring risks. Application: outdoor metering enclosures, outdoor transformers, and entry hubs. Feature: UL Listed certification and dual sockets for expansion. Business impact: safety compliance and future-proofing reduce risk and operating costs. Application: regulated commercial environments requiring documented safety and scalable metering solutions.
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FAQs
The unit is a plug-in socket, three-phase metering module designed for commercial panels. It supports top, bottom, or back feeder exits and uses a five-jaw, two-socket arrangement rated at 400A. With a long 66.625 in footprint, installers should plan for space, ensure proper clearance, and, for outdoor use, consider Myer hubs and rainproof caps to protect outdoor connections.
The stack provides three-phase in, single-phase out metering and is configured for 208Y/120V networks, aligning with common commercial utility services. It ships with a 400A module (one 300A and one 200A breaker installed) and a copper 1200A bus, delivering accurate energy measurement and scalable capacity for larger loads.
Yes, the 35MM240R1240C39 is UL Listed, ensuring safety and compatibility with standard electrical codes. It supports 208Y/120V networks and 120/240V single-phase configurations commonly used in commercial metering, simplifying procurement and field approval while maintaining rigorous safety labeling.
Lever bypass, dual sockets, and plug-in sockets reduce downtime during maintenance and simplify fault isolation. The 400A rating accommodates growth without panel upgrades, while top/bottom/back exits offer flexible routing, lowering installation costs. Improved metering accuracy and faster billing cycles translate to tangible energy management savings over the life of the system.
Ensure compatibility with Eaton metering families and plan for outdoor use with rainproof hubs for top exit configurations. Verify panel clearance for a 66.625 in length and a 320 lb weight, and confirm 208Y/120V or 120/240V configurations align with project specs and safety guidelines. UL Listed status aids regulatory acceptance in diverse facilities.