Milbank 4-Position Ringless Me...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,902.43
Milbank U5904-X 4-5 Terminal Ringless Meter Socket Large Closing Plate 4 Position 4-125 Ampere Main Breaker Provision 22K AIC

Milbank 4-Position Ringless Meter Socket with Main Breaker Provision - 100A, 240V, 1-Phase Surface Mount

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Model: U5904-X-KK-K1

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

$1,902.43
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Milbank 4-Position Ringless Meter Socket with Main Breaker Provision

Professional Multi-Meter Power Distribution Solution

The Milbank 4-Position Ringless Meter Socket delivers reliable multi-unit power distribution with 100 continuous ampere rating and up to 240V AC capacity. Featuring durable G90 galvanized steel construction with powder coat finish and Type 3R enclosure rating, this surface mount unit provides professional-grade performance for overhead or underground cable entry applications with glass polyester insulation and ground lug equipment grounding.

Professional Features & Benefits

  • 100 Continuous Ampere Rating: Provides reliable power capacity for multi-unit residential and commercial applications with consistent performance.
  • 4-Position Meter Configuration: Accommodates four separate metering points in a single enclosure for efficient space utilization and centralized management.
  • G90 Galvanized Steel with Powder Coat Finish: Delivers superior corrosion resistance and long-term durability in various environmental conditions.
  • Type 3R Enclosure Rating: Ensures protection against rain, sleet, and ice formation for reliable outdoor installation performance.
  • Overhead or Underground Cable Entry: Offers flexible installation options to accommodate various service entrance configurations and site requirements.
  • UL Listed Certification: Meets rigorous safety and performance standards for professional electrical installations and code compliance.
  • Main Breaker Provision: Includes provision for main breaker installation to provide overcurrent protection and service disconnect capability.

Technical Specifications

  • Amperage Rating: 100 Continuous Ampere
  • Application: Meter Socket With Main
  • Brand Name: Milbank
  • Cable Entry: Overhead or Underground
  • Departent: Electrical
  • Equipment Ground: Ground Lug
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Large Closing Plate
  • Insulation: Glass Polyester
  • Line Side Wire Range: 6 AWG - 350 kcmil
  • Main Breaker Size: Breaker Provision
  • Number Branch Circuits: 4
  • Number Of Meter Positions: 4 Positions
  • Number Of Receptacles: 0
  • Phase: 1 Phase
  • Product Family Code: CU12
  • Product Height: 30 IN
  • Product Length: 5.125 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 5.125L x 42.813W x30H
  • Product Type: Ringless Meter Socket
  • Special Features: Commonwealth Edison Chicago Housing Authority
  • Standard: UL Listed;Type 3R
  • Unspsc Number: 39121102
  • Voltage Rating: Up to 240 Volts Alternating Current
  • Width: 42.813 IN

Professional Applications

  • Multi-Unit Residential Properties
  • Apartment Buildings and Condominiums
  • Commercial Multi-Tenant Facilities
  • Mixed-Use Developments
  • Professional Office Buildings
  • Retail Strip Centers
  • Light Industrial Facilities

Why Choose Milbank Quality?

Milbank delivers proven reliability with UL Listed certification and Type 3R enclosure protection, ensuring dependable performance in demanding applications. The robust G90 galvanized steel construction with powder coat finish provides long-term durability and corrosion resistance for professional electrical installations.

Manufacturer Resources

Product Specs

Amperage Rating:
100 Continuous Ampere
Application:
Meter Socket With Main
Brand Name:
Milbank
Cable Entry:
Overhead or Underground
Equipment Ground:
Ground Lug
Frequency Rating:
60 Hertz
Hub Closing Plate:
Large Closing Plate
Insulation:
Glass Polyester
Line Side Wire Range:
6 AWG - 350 kcmil
Main Breaker Size:
Breaker Provision
Number Branch Circuits:
4
Number Of Meter Positions:
4 Positions
Number Of Receptacles:
0
Phase:
1 Phase
Product Family Code:
CU12
Product Height:
30 IN
Product Length:
5.125 IN
Product Size:
5.125L x 42.813W x30H
Product Type:
Ringless Meter Socket
Special Features:
Commonwealth Edison Chicago Housing Authority
Standards:
UL Listed;Type 3R
Unspsc Number:
39121102
Voltage Rating:
Up to 240 Volts Alternating Current
Product Material:
G90 Galvanized Steel with Powder Coat Finish
Product Mounting:
Surface Mount
Amps:
100
Product Width:
42.813 IN
Department:
Electrical
Product Subgroup:
Electrical
Insulation Type:
Glass Polyester
Hub Style:
Large Closing Plate
Installation Category:
Surface Mount
Number of Phases:
1
Frequency:
60 hertz
Product Details:
Ringless Meter Socket
Product Group:
Metering & Service Entrance

Milbank U5904-X-KK-K1 – Frequently Asked Questions

1) Will a Milbank U5904-X 4-position meter socket work on a 240V single-phase apartment service?
That is exactly what the U5904-X is built for. It is a 1-phase socket rated up to 240 volts AC at 60 hertz, with four meter positions in one enclosure, so a four-unit building gets one gang instead of four individual sockets. Each position carries 100 continuous amperes. If your service is three-phase, or any position needs more than 100A continuous, this is the wrong socket.
2) Does the Milbank U5904-X come with main breakers, or do I have to buy them separately?
Breakers are not included. The U5904-X is a breaker provision socket, meaning each of the four branch positions is prepped to accept a main breaker that you order separately. Budget four breakers on top of the socket if every unit is being fed. If you want a socket that ships with the disconnects already in it, you need a factory main breaker version, not a provision version.
3) What size wire can I land on the line side of the Milbank U5904-X?
The line side terminals take 6 AWG through 350 kcmil, which covers everything from a small copper service lateral up to the aluminum 350 a utility typically pulls for a four-unit building. Check your service conductor size against that range before you set the can, because a parallel run or anything above 350 kcmil will not land in these lugs. Equipment grounding is by ground lug.
4) How much wall space does a Milbank U5904-X 4-gang meter socket need?
Plan on a wall opening at least 42.813 inches wide by 30 inches high, with the enclosure standing 5.125 inches off the wall. It is a surface mount unit, so those dimensions are what you need clear on the face of the building, plus utility working clearance in front. The 42.813 inch width is the number that catches people out on a narrow wall between windows or at a corner.
5) Which Milbank U5904-X version do I order for a ComEd job in Chicago?
For Commonwealth Edison and Chicago Housing Authority work, the version to specify is U5904-X-KK-K1-PED-CECHA, which is the horn bypass, pedestal mount configuration approved for those utilities. Ordering the plain U5904-X for a ComEd install is the usual mistake, because the utility will not set meters in a can that is not on their approved list. Confirm the requirement with the utility before you order, since approvals are per-jurisdiction.
6) What is the difference between the U5904-X options like KK, 5T, BL and PED?
They are utility-driven build options on the same 4-position socket. Plain U5904-X is the base can. The KK suffix adds horn bypass for hot meter changes, and U5904-X-KK-5T is horn bypass with 5 terminal horizontal jaws for services that need a fifth terminal. U5904-X-KK-BL takes a 9/16 inch barrel lock, U5904-X-KK-BLG takes a 7/8 inch barrel lock, and U5904-X-KK-K1 is horn bypass with a single connector. PED versions such as U5904-X-KK-K1-PED are built for pedestal mounting instead of hanging on a wall. Your serving utility dictates which of these you are allowed to install, so get their spec sheet before you pick a suffix.
7) Can the U5904-X be used with an underground service, or is it overhead only?
Both. Cable entry on the U5904-X is overhead or underground, and it ships with a large hub closing plate so the top can be closed off when the service comes up from below, or opened for a hub when it drops from a weatherhead. You order the hub itself to match your raceway size, it is not part of the socket.
8) Is the Milbank U5904-X rated for outdoor mounting on the side of a building?
Yes, it is a Type 3R enclosure and UL Listed, so it is rated for outdoor use against rain, sleet and ice. The shell is G90 galvanized steel with a powder coat finish, which is the standard construction for a service can that lives outside for decades. Type 3R is not washdown or dust-tight, so it is not the right can for a corrosive or hosed-down environment.
9) Do I need a ringless meter socket or a ring-type one for my service?
That call belongs to your serving utility, not to the installer. The U5904-X is ringless, meaning the meter is retained by a sealed cover rather than a locking ring, which is what most utilities in ringless territories require and what makes bypass and sealing straightforward for their crews. Ring-type territories will reject a ringless can outright. If you are matching existing meters on the same building, look at what is already installed and stay consistent.
10) Can I add a receptacle for house loads to the Milbank U5904-X 4-position socket?
No. The U5904-X carries zero receptacles and four branch positions, all of them metered. If the property needs an unmetered house panel for hallway lights, exterior lighting or a common laundry, that is a separate piece of equipment. A five-position socket with a house position, or a separate house panel fed from the service, is what covers it.
11) I need to standardize meter sockets across several 4-unit buildings. What do I have to match on the Milbank U5904-X?
Four things decide whether one part number covers the whole portfolio: the utility approval in each jurisdiction, the bypass style, the lock provision, and the mounting. The U5904-X family is the same 4-position, 100 ampere, 240 volt, single-phase, ringless socket throughout, so the electrical spec carries across buildings. What varies is the suffix, for instance a 9/16 inch versus a 7/8 inch barrel lock provision, or wall versus pedestal mount. Spec one suffix per utility territory and you can stock a single part number per region.
12) What keeps the meter jaws insulated in a Milbank U5904-X?
Glass polyester is the insulating material behind the jaws on the U5904-X. It is a thermoset that holds up to the heat and tracking stress of a service can far better than a plain thermoplastic, which matters on a 100 ampere continuous socket that runs loaded all day in a multi-family building.
How fast can I get the Milbank U5904-X-KK-K1 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 Milbank U5904-X-KK-K1 come with a warranty?
Absolutely. The Milbank U5904-X-KK-K1 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 Milbank U5904-X-KK-K1?
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
Why buy the Milbank U5904-X-KK-K1 from ZenSupply?
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