Eaton 35MM240R1240C42 Meter Stack - UL Listed
Part Number: 35MM240R1240C42
Quick Summary
Eaton 35MM240R1240C42 Meter Stack provides plug-in socket metering for commercial and light industrial panels. Engineers often struggle with installation complexity, limited space, and mounting flexibility in outdoor environments. UL Listed certification and a NEMA 3R enclosure rating help ensure safe, weather-resistant operation across indoor and outdoor applications in both three-phase-in, single-phase-out setups and shared metering networks. This solution speeds commissioning, reduces field labor, and supports scalable metering programs, while aligning with common metering standards and project timelines for commercial facilities and contractors. For energy management and utility-grade metering projects, it integrates with standard metering products, enabling faster deployment and reliable performance across diverse installation scenarios.
Product Information
Extended Description
35MM240R1240C42 Eaton: Eaton 35MM commercial meter stack, Plug-in socket, 400A, Cu, Bus:1200A, Lever, NEMA 3R, Depends on selected MCB, 5-jaw, Sockets:2, 3-phase in, 1-phase out, A-B, (1) 400A and (1) 250A breakers installed, Ringless, Socket:400A, 120/240 Vac
Product Name
Eaton 35MM commercial meter stack
Catalog Number
35MM240R1240C42
UPC
786689166120
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 - 35MM240R1240C42
Feature: Plug-in socket with a five-jaw configuration and two sockets supports three-phase in, single-phase out at a 400A rating. Business Impact: Simplifies commissioning and reduces field labor by enabling plug-and-play metering; lowers wiring errors with a standardized, captive connection. Application: Ideal for commercial meter stacks in panel boards serving light-industrial facilities. Feature: UL Listed certification and a NEMA 3R-rated enclosure provide outdoor durability and weather resistance. Business Impact: Increases system uptime by reducing weather-related failures and service calls. Application: Outdoor and semi-exposed installations in distribution panels. Feature: Main feeder exits can be top, bottom, or back; sockets and ringless design support flexible layouts. Business Impact: Installation flexibility shortens project schedules and improves space utilization. Application: Retrofit projects and new builds requiring adaptable metering configurations. Feature: Pre-installed breakers (one 400A and one 250A) and compatibility with Eaton MCBs streamline integration. Business Impact: Reduces on-site assembly steps and enhances safety with built-in protection profiles. Application: Utility-grade metering in commercial facilities with mixed-era panels. Feature: Dimensions and weight (66.625 in L, 8.75 in H, 19.375 in W; 320 lb) offer predictable fit in constrained spaces. Business Impact: Enables accurate space planning and reduces field rework during panel upgrades. Application: Retrofit and new-install metering enclosures in automated facilities.
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FAQs
The meter stack uses a plug-in socket with a five-jaw configuration and two sockets, designed for three-phase in and single-phase out. It is compatible with standard Eaton MCBs and is intended for commercial panel boards supporting 120/240V and 208Y/120V metering networks. Top, bottom, or back exit options provide flexible integration with existing buswork and layouts, simplifying retrofits and new installations.
This unit is rated for 400A with two sockets, supporting 120/240V single-phase and 208Y/120V three-phase networks. The three-wire metering arrangement and 5-jaw plug-in socket help ensure reliable connections and accurate measurements. The design accommodates one 400A and one 250A breaker configuration in the installed setup, aiding compatibility with common utility metering schemes.
Yes. The product is UL Listed and configured with a NEMA 3R enclosure rating, which provides weather resistance for outdoor installations. With rainproof hub options and flexible exit configurations, it supports durable metering in exposed locations while maintaining safe operation in varying climate conditions.
Key standards include UL Listed certification for electrical safety and performance. The enclosure’s NEMA 3R rating supports outdoor protection against rain and corrosion. These criteria help ensure code compliance for commercial metering installations and facilitate smoother approvals in many building and utility projects.
Broader organizational benefits arise from reduced field installation time, fewer wiring errors due to standardized plug-in connections, and easier retrofits for existing facilities. The combination of UL safety certification, outdoor-ready enclosure, and compatible voltage networks supports faster project completion, lower labor costs, and improved reliability of metering in energy management programs.