Milbank 400A Ringless Bolt-On ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,356.95
Milbank U4664-X 400A Ringless Bolt-in Meter Socket | Link Bypass | Utility Configurations

Milbank 400A Ringless Bolt-On Meter Socket with Link Bypass - 1 Phase 300V Surface Mount

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Model: U4664-XT-9507

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

$1,356.95
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Milbank 400A Ringless Bolt-On Meter Socket with Link Bypass

Professional single-phase metering solution with utility-grade construction

The Milbank 400A Ringless Bolt-On Meter Socket delivers reliable single-phase electrical metering with 480 continuous ampere capacity and integrated link bypass functionality. Featuring G90 galvanized steel construction with powder coat finish and Type 3R enclosure rating, this surface-mount meter socket provides professional-grade performance for utility configurations with overhead or underground cable entry options.

Professional Features & Benefits

  • 480 Continuous Ampere Rating: Handles high-capacity electrical loads with reliable continuous operation for demanding applications.
  • Link Bypass Provision: Enables utility maintenance and meter changes without service interruption, improving operational flexibility.
  • G90 Galvanized Steel Construction: Provides superior corrosion resistance and long-term durability in outdoor environments.
  • Type 3R Enclosure Rating: Protects against rain, sleet, and ice formation while maintaining safe operation in outdoor installations.
  • Overhead/Underground Cable Entry: Accommodates diverse utility connection methods for versatile installation requirements.
  • UL Listed Certification: Meets rigorous safety standards for professional electrical installations and code compliance.
  • 4 Terminal Configuration: Provides secure connections for line and load conductors with 1/2 inch stud terminals.

Technical Specifications

  • Amperage Rating: 480 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Bypass Provision: Link Bypass
  • Cable Entry: Overhead or Underground
  • Departent: Electrical
  • Frequency Rating: 60 Hertz
  • Insulation: Glass Polyester
  • Line Side Wire Range: Two 6 AWG - 350 kcmil
  • Load Side Wire Range: Two 6 AWG - 350 kcmil
  • Main Breaker Size: No Main Breaker
  • Number Of Jaws: 4 Terminal
  • Number Of Main Breakers: 0
  • Number Of Meter Positions: 1 Position
  • Number Of Receptacles: 0
  • Phase: 1 Phase
  • Product Family Code: KSER
  • Product Height: 36 IN
  • Product Length: 6 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 6L x 17.75W x36H
  • Product Type: Bolt On Meter Socket
  • Standard: UL Listed;Type 3R
  • Terminal: 1/2 Inch Stud Line Side
  • Unspsc Number: 39121102
  • Voltage Rating: 300 Volts Alternating Current
  • Width: 17.75 IN

Professional Applications

  • Residential Service Entrance Metering
  • Commercial Building Electrical Service
  • Multi-Unit Property Metering
  • Industrial Facility Power Distribution
  • Utility Service Connections
  • Electrical Contractor Installations
  • Municipal and Government Buildings

Why Choose Milbank Quality?

Milbank meter sockets deliver proven reliability with UL Listed certification and Type 3R weather protection. The G90 galvanized steel construction with powder coat finish ensures long-term performance in demanding outdoor environments, while the link bypass provision provides operational flexibility for utility maintenance requirements.

Manufacturer Resources

Product Specs

Amperage Rating:
480 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
Link Bypass
Cable Entry:
Overhead or Underground
Frequency Rating:
60 Hertz
Insulation:
Glass Polyester
Line Side Wire Range:
Two 6 AWG - 350 kcmil
Load Side Wire Range:
Two 6 AWG - 350 kcmil
Main Breaker Size:
No Main Breaker
Number Of Jaws:
4 Terminal
Number Of Main Breakers:
0
Number Of Meter Positions:
1 Position
Number Of Receptacles:
0
Phase:
1 Phase
Product Family Code:
KSER
Product Height:
36 IN
Product Length:
6 IN
Product Size:
6L x 17.75W x36H
Product Type:
Bolt On Meter Socket
Standards:
UL Listed;Type 3R
Terminal:
1/2 Inch Stud Line Side
Unspsc Number:
39121102
Voltage Rating:
300 Volts Alternating Current
Product Material:
G90 Galvanized Steel with Powder Coat Finish
Product Mounting:
Surface Mount
Amps:
480
Product Width:
17.75 IN
Department:
Electrical
Product Subgroup:
Electrical
Insulation Type:
Glass Polyester
Installation Category:
Surface Mount
Terminal Type:
1/2 Inch Stud Line Side
Number of Phases:
1
Frequency:
60 hertz
Product Details:
Bolt On Meter Socket
Number of Terminations:
4
Product Group:
Metering & Service Entrance

Milbank U4664-XT-9507 – Frequently Asked Questions

1) Will a Milbank U4664-X 400A meter socket accept 350 kcmil service conductors?
Yes. The U4664-X takes two 6 AWG to 350 kcmil conductors per phase on both the line side and the load side, so a parallel 350 kcmil feed lands directly without a separate splice box. Line side terminations are 1/2 inch studs, so you're landing lugs on studs rather than into a set screw barrel.
2) Does the Milbank U4664-X meter socket include a main breaker or disconnect?
No. The U4664-X is a meter socket only, with no main breaker and no receptacles, so it is a single 1-position metering can ahead of whatever service equipment you install. You still need a separate main disconnect to complete the service. If the job calls for meter and main in one enclosure, you want a meter main combination, not this can.
3) Is the Milbank U4664-X a 4-jaw single phase socket, and will it work on a 120/240V residential service?
Four jaws, 1 phase, 60 Hz, rated 300 volts AC. That is the standard single phase self-contained arrangement, and a 120/240V service falls under the 300V rating. It will not meter a three phase service, and it will not work where the utility requires a 5-jaw or 7-jaw socket for a network or three phase arrangement.
4) What does the link bypass on a Milbank U4664-X actually do for the utility?
Link bypass lets the utility jumper line to load inside the socket so the meter can be pulled or swapped while the service stays energized to the building. That is why many utilities specify bypass on 400A class services: no outage to change a meter. One of the U4664-X configurations is built with a bar link bypass, mpn U4664-X-BAR-8526, so check which bypass style your utility's approved list calls for before you order.
5) How much wall space does a Milbank U4664-X 400A meter socket need?
Plan on a footprint of 6L x 17.75W x 36H inches. It's a surface mount can, so it bolts flat to the wall or a backboard rather than recessing into it, and the 6 inch depth is what stands off the wall. On a narrow pilaster or between a downspout and a corner, measure the 17.75 inch width first, that's usually the dimension that kills the location.
6) Can the Milbank U4664-X 400A meter socket be mounted outdoors?
Type 3R rated and UL Listed, so it is built for outdoor wall mounting where it sees rain, sleet, and ice. The shell is G90 galvanized steel with a powder coat finish, and internal insulation is glass polyester. Type 3R is not a washdown or submersion rating, so it is a service entrance can, not something for a wet interior process area.
7) What is the difference between the Milbank U4664-X configuration numbers when ordering?
The U4664-X is sold in five build configurations, and the number on the end of the part identifies which one: U4664-X-8502, U4664-X-8507, U4664-X-8523, the bar link bypass build U4664-X-BAR-8526, and U4664-XT-9507 with two large closing plates. Utilities approve specific configurations by number, so order against the configuration your serving utility lists rather than the base U4664-X.
8) Does the U4664-X work for an underground service lateral, or only overhead?
Either. The U4664-X is built for overhead or underground cable entry, so the same can serves a weatherhead drop or a lateral coming up from a trench. What decides the hub or closing plate arrangement is the configuration you order, since one version ships with two large closing plates, mpn U4664-XT-9507.
9) Is a ringless meter socket the right choice, or do I need a ring type?
That call belongs to the serving utility, not the installer. The U4664-X is a ringless bolt-on design, meaning the cover latches and seals without a separate sealing ring around the meter. Utilities standardize on one or the other and will refuse to set a meter on the wrong style, so confirm the utility's spec before ordering a 400A can either way.
10) Can one Milbank U4664-X meter a whole apartment building with several tenants?
No. The U4664-X holds a single meter position, so it meters one service. A multi tenant building needs one socket per tenant or a multi position meter stack, not this can. Where it fits a multi family property is the house service or a single large 400A dwelling unit feed.
How fast can I get the Milbank U4664-XT-9507 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 U4664-XT-9507 come with a warranty?
Absolutely. The Milbank U4664-XT-9507 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 U4664-XT-9507?
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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