Eaton Commercial Meter Stack 3...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$7,073.21
Eaton Meter Stack Commercial 35MM Plug-In Socket 5-Jaw NEMA 3R

Eaton Commercial Meter Stack 35MM Plug-In Socket 225A Five-Jaw NEMA 3R Enclosure

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Model: 35MM140R1240
$7,073.21

In Stock (leaves warehouse same day if ordered before 3pm ET)

$7,073.21
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Eaton Commercial Meter Stack 35MM Plug-In Socket 225A Five-Jaw NEMA 3R Enclosure

Professional Commercial Metering Solution for Multi-Tenant Applications

The Eaton Commercial Meter Stack 35MM Plug-In Socket delivers reliable metering infrastructure for commercial and multi-tenant facilities. This professional-grade socket features 225A capacity with five-jaw configuration and NEMA 3R enclosure rating for versatile indoor and outdoor installations. Built with aluminum bus construction and 1200A bus rating, this UL Listed socket provides dependable three-phase input to single-phase output conversion for commercial metering applications.

Professional Features & Benefits

  • 225A Socket Capacity: Handles substantial electrical loads for commercial tenant metering and distribution requirements.
  • Five-Jaw Configuration: Provides secure plug-in connection with reliable contact integrity for consistent metering performance.
  • NEMA 3R Enclosure: Weather-resistant construction suitable for both indoor and outdoor commercial installations.
  • 1200A Aluminum Bus: Heavy-duty bus construction ensures reliable power distribution with excellent conductivity and durability.
  • Three-Phase to Single-Phase: Converts three-phase input to single-phase output for flexible tenant metering configurations.
  • UL Listed Certification: Meets rigorous safety and performance standards for commercial electrical installations.
  • 35MM Meter Stack Design: Standardized mounting configuration for efficient multi-meter commercial installations.

Technical Specifications

  • Bus Material: Aluminum
  • Bus Rating: 1200 A
  • Catalog Notes: Main tenant feeders can exit top, bottom, or back, If being used in outdoor application and exiting
  • Certifications: UL Listed
  • Number Of Jaws: Five-jaw
  • Phase: Three-phase in, single-phase out
  • Product Details: Plug-in socket
  • Socket Amperage: 225A
  • Special Features: Not suitable for use
  • Voltage Rating: 120/240 V

Professional Applications

  • Commercial Multi-Tenant Buildings
  • Retail Shopping Centers
  • Office Complexes
  • Mixed-Use Developments
  • Industrial Facilities
  • Municipal Buildings
  • Educational Institutions

Why Choose Eaton Quality?

Eaton delivers proven reliability in commercial electrical infrastructure with UL Listed certification and robust aluminum bus construction rated for 1200A service. The NEMA 3R enclosure provides weather-resistant protection for demanding commercial environments, ensuring long-term performance and dependable metering operations.

Manufacturer Resources

Product Specs

Bus Material:
Aluminum
Bus Rating:
1200 A
Certifications:
UL Listed
Number Of Jaws:
Five-jaw
Phase:
Three-phase in, single-phase out
Product Details:
Plug-in socket
Socket Amperage:
225A
Special Features:
Not suitable for use
Voltage Rating:
120/240 V
Department:
Electrical
Product Group:
Meters and Sockets
Product Type:
Meter

Eaton 35MM140R1240 – Frequently Asked Questions

1) Will the Eaton 35MM meter stack socket work on a 120/240 V single-phase tenant meter?
Yes. The 35MM plug-in socket is rated 120/240 V and takes three-phase input on the horizontal bus, delivering single-phase output to each tenant meter position. That is the normal arrangement in a multi-tenant building fed three-phase at the service, where each apartment or suite is metered single-phase. The five-jaw socket is the single-phase network configuration, so the meter you set in it must be a five-jaw meter, not a seven-jaw three-phase meter.
2) Can an Eaton 35MM meter stack be installed outdoors?
The 35MM meter stack carries a NEMA 3R enclosure, which is the rainproof rating used for outdoor service equipment, so it can go on an exterior wall as well as in an indoor electrical room. Eaton's catalog note on the 35MM is that main tenant feeders can exit the top, bottom, or back of the stack, and that the exit arrangement matters in an outdoor application. Plan the feeder exit before you set the stack, because reworking the exit after the enclosure is mounted and the bus is landed is the expensive part.
3) What is the difference between the 225A and 400A Eaton 35MM meter sockets?
The amperage is the rating of each individual tenant meter position, not the stack. 225 A positions suit typical apartment, retail bay, and office suite loads, and you can get up to four of them in a section. 400 A positions are for a large tenant, a restaurant kitchen, or a house panel serving common-area load, and a section holds a maximum of two of them (35MM140R1240 for one, 35MM240R1240 for two). Either way the horizontal bus feeding the section is rated 1200 A, so the bus is sized the same and only the socket capacity changes.
4) Should I order aluminum or copper bus on an Eaton 35MM meter stack?
Both bus materials are rated the same 1200 A on the 35MM, so the ampacity of the stack does not change with the choice. Copper is the one to order when the job spec or the engineer's drawing calls for copper bus, which is common on institutional, healthcare, and government work. Aluminum is the standard build otherwise. The catalog number tells you which you have: a trailing C is copper (35MM220R12C, 35MM420R12C, 35MM240R1240C), no C is aluminum (35MM220R12, 35MM420R12). Get this right at order time, because the bus is not a field-changeable item.
5) What does five-jaw mean on a meter socket, and how do I know it is the right one?
Jaw count is how a meter socket tells you what service it is built for, and it has to match the meter the utility will set. Five jaws is the single-phase network arrangement: four jaws for the line and load conductors plus a fifth for the neutral or network connection. The 35MM is a five-jaw plug-in socket rated 120/240 V. If the utility is issuing a four-jaw self-contained meter or a seven-jaw three-phase meter for that position, the five-jaw socket is the wrong one and the meter will not seat.
6) Can I add meter positions to an Eaton 35MM stack later as a building fills up?
The 35MM is a plug-in design, which is what makes a meter stack worth using in a building where tenancy changes. Sections come in one, two, three, and four socket configurations at 225 A, so you size the installed sections to the meter count you need now and the 1200 A horizontal bus carries the whole run. Any future expansion is a matter of adding sections onto that bus rather than rebuilding the service, so size the bus run and the wall space for the building's full buildout, not just the first phase.
7) Is the Eaton 35MM meter stack UL Listed for a permitted commercial service?
The 35MM meter stack is UL Listed, which is what an inspector and most utility service departments look for on multi-tenant metering equipment. Beyond the UL Listing, the utility with jurisdiction has its own approved-equipment list and its own rules on socket jaw count, sealing, and meter position numbering, so confirm the 35MM is accepted on that utility's list before the service is set.
8) Where do the tenant feeders come out of an Eaton 35MM meter stack?
Main tenant feeders on the 35MM can exit the top, bottom, or back of the enclosure, which lets you run them up into a ceiling, down into a slab or trench, or straight back through the wall into the tenant space. Eaton flags the exit direction as something to settle when the stack is in an outdoor application, so decide the routing with the NEMA 3R installation in mind before the equipment lands on site.
9) I need one 400A tenant position and several 225A ones. Can I mix them on the same Eaton 35MM run?
You order it as separate sections rather than one mixed section. The 35MM sections come either as 225 A positions (up to four per section) or as 400 A positions (one or two per section), and every section ties to the same 1200 A horizontal bus. So a building with a 400 A restaurant and four 225 A retail bays takes a 400 A section plus a 225 A section, both on the common bus. Watch the total: the connected positions all draw through that 1200 A bus rating.
How fast can I get the Eaton 35MM140R1240 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton 35MM140R1240 come with a warranty?
Absolutely. The Eaton 35MM140R1240 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton 35MM140R1240?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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