Milbank 320 Amp 3 Phase Ringle...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,206.75
Milbank 320 Amp Ringless Lever Bypass Meter Socket 7 Terminal

Milbank 320 Amp 3 Phase Ringless Lever Bypass Meter Socket with 7 Terminal Configuration

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Model: U4013-X-BLG

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

$1,206.75
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Milbank 320 Amp 3 Phase Ringless Lever Bypass Meter Socket with 7 Terminal Configuration

Professional Power Metering & Service Disconnect Solution

The Milbank 320 Amp 3 Phase Ringless Lever Bypass Meter Socket delivers reliable power metering and service disconnect capabilities for commercial and industrial applications. Featuring robust G90 galvanized steel construction with powder coat finish and UL Listed Type 3R rating, this professional-grade meter socket provides 320 continuous ampere capacity with lever bypass functionality and 7 terminal configuration for versatile installation requirements.

Professional Features & Benefits

  • 320 Continuous Ampere Rating: Handles high-capacity electrical loads for demanding commercial and industrial applications with reliable performance.
  • 3 Phase Configuration: Supports three-phase power systems commonly required in commercial facilities and industrial operations.
  • Lever Bypass Provision: Enables safe meter maintenance and replacement without interrupting power service to critical loads.
  • G90 Galvanized Steel with Powder Coat: Provides superior corrosion resistance and long-lasting durability in outdoor environments.
  • UL Listed Type 3R Rating: Meets stringent safety standards and provides protection against weather conditions for outdoor installations.
  • 7 Terminal Configuration: Accommodates complex wiring requirements with multiple connection points for enhanced flexibility.
  • Multiple Cable Entry Options: Supports overhead, underground, and side wireway connections for versatile installation configurations.

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket
  • Barrel Lock Provision: 7/8 Inch Knockout and Angle Bracket For Barrel Lock Provision
  • Brand Name: Milbank
  • Bypass Provision: Lever Bypass
  • Cable Entry: Overhead and Underground and Side Wireway
  • Departent: Electrical
  • Equipment Ground: Grounding Stud
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Large Closing Plate
  • Insulation: Glass Polyester
  • Main Breaker Size: No Main Breaker
  • Number Of Jaws: 7 Terminal
  • Number Of Main Breakers: 0
  • Number Of Meter Positions: 1 Position
  • Number Of Receptacles: 0
  • Phase: 3 Phase
  • Product Family Code: 7T32
  • Product Height: 40.5 IN
  • Product Length: 6.5 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 6.5L x 17.75W x40.5H
  • Product Type: Ringless Meter Socket
  • Special Features: Westar Energy
  • Standard: UL Listed;Type 3R
  • Terminal: 3/8 Inch Stud
  • Unspsc Number: 39121102
  • Voltage Rating: 600 Volts Alternating Current
  • Width: 17.75 IN

Professional Applications

  • Commercial Buildings and Office Complexes
  • Industrial Facilities and Manufacturing Plants
  • Multi-Unit Residential Properties
  • Retail and Shopping Centers
  • Healthcare and Educational Facilities
  • Municipal and Government Buildings
  • Data Centers and Telecommunications

Why Choose Milbank Quality?

Milbank delivers proven reliability with UL Listed certification and Type 3R weather protection rating. The robust G90 galvanized steel construction with powder coat finish ensures long-term durability and corrosion resistance, while the glass polyester insulation and grounding stud provide enhanced safety and performance in demanding electrical service applications.

Manufacturer Resources

Product Specs

Amperage Rating:
320 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
Lever Bypass
Cable Entry:
Overhead and Underground and Side Wireway
Equipment Ground:
Grounding Stud
Frequency Rating:
60 Hertz
Hub Closing Plate:
Large Closing Plate
Insulation:
Glass Polyester
Main Breaker Size:
No Main Breaker
Number Of Jaws:
7 Terminal
Number Of Main Breakers:
0
Number Of Meter Positions:
1 Position
Number Of Receptacles:
0
Phase:
3 Phase
Product Family Code:
7T32
Product Height:
40.5 IN
Product Length:
6.5 IN
Product Size:
6.5L x 17.75W x40.5H
Product Type:
Ringless Meter Socket
Special Features:
Westar Energy
Standards:
UL Listed;Type 3R
Terminal:
3/8 Inch Stud
Unspsc Number:
39121102
Voltage Rating:
600 Volts Alternating Current
Product Material:
G90 Galvanized Steel with Powder Coat Finish
Product Mounting:
Surface Mount
Amps:
320
Product Width:
17.75 IN
Department:
Electrical
Product Subgroup:
Metering & Meter Sockets
Insulation Type:
Glass Polyester
Hub Style:
Large Closing Plate
Installation Category:
Surface Mount
Terminal Type:
3/8 Inch Stud
Number of Phases:
3
Product Details:
Ringless Meter Socket
Frequency:
60 hertz
Number of Terminations:
7
Product Group:
Power Distribution

Milbank U4013-X-BLG – Frequently Asked Questions

1) Will a Milbank 320 amp 7 terminal meter socket work on a 3 phase 4 wire service?
The 7 terminal jaw configuration is what a 3 phase service uses, and this Milbank socket is built for 3 phase at 600 volts AC, 60 Hz. Rated 320 continuous amperes. Single meter position, so it serves one metered service, not a multi-tenant stack. Before you order, confirm the serving utility specifies a 7 terminal socket for that service, since jaw count is set by the meter form the utility wants.
2) Does this Milbank 320A meter socket include a main breaker or service disconnect?
No breaker in it. The Milbank 320 amp ringless socket ships with no main breaker and zero breaker positions, so it is a meter socket only. You will need a separate service disconnect or main breaker panel downstream to complete the service, and the overcurrent protection has to come from that enclosure. There are also no receptacles in the can.
3) Can this meter socket be mounted outdoors on the side of a building?
Yes. It is UL Listed and rated Type 3R, which is the outdoor rain-tight rating utilities require for an exterior service. The enclosure is G90 galvanized steel with a powder coat finish for corrosion resistance, and it is surface mount, so it lands on a wall or a rack rather than flush into it.
4) What does lever bypass do, and do I need it instead of a plain meter socket?
Lever bypass lets the meter be pulled and replaced without dropping power to the load. That matters when the service feeds a facility that cannot go dark for a meter swap, and many utilities mandate bypass at this amperage. If your utility does not require bypass and the load tolerates an outage, a non-bypass socket is the simpler buy. This one is lever bypass, not the bolted or horn style, so check which type your utility spec calls out.
5) What size conductors land in a Milbank U4013-X and what are the terminals?
Line and load terminations are 3/8 inch stud type, so you are landing lugs or compression terminals on studs rather than into a set screw barrel. The U4013-X-2/K7-WSE version comes with two single connectors sized 4 through 600 kcmil, which is the range you need for a 320 amp three phase service run in parallel or in large single conductors. There is a grounding stud for the equipment ground.
6) What is the difference between the side bussed and the barrel lock versions of the Milbank U4013-X?
Three builds. U4013-X is the plain side bussed socket. U4013-X-BLG is the same side bussed socket with a 7/8 inch barrel lock provision, meaning a 7/8 inch knockout and angle bracket so the utility can barrel lock the cover. U4013-X-2/K7-WSE is the Westar Energy build with two single connectors rated 4 to 600 kcmil already installed. Pick the barrel lock version if your utility seals with a barrel lock, and the Westar build if you are on that utility spec.
7) Is a ringless meter socket the right choice, or do I need a ring type?
Ringless means the cover itself is sealed by the utility rather than a separate locking ring clamping the meter to the socket. Utilities specify one or the other and they are not interchangeable in the field, so this Milbank 320 amp unit is only correct where the serving utility accepts a ringless cover. If the utility spec sheet calls for ring type, you need a different socket. Ask the utility before ordering; it is the single most common reason a socket gets rejected at inspection.
8) How much wall space do I need for a Milbank 320 amp 3 phase meter socket?
Plan for 6.5 x 17.75 x 40.5 inches, with 40.5 inches the height and 17.75 inches the width, and 6.5 inches the depth off the wall. That 40.5 inch height is the number that catches people, so measure your riser and clearance to the meter center before setting the unistrut or backboard.
9) Can I feed this Milbank socket from an underground lateral instead of overhead?
Either way works. Cable entry covers overhead, underground, and side wireway, so you can come down from a weatherhead, up from a lateral, or gutter into it from an adjacent enclosure. A large hub closing plate is part of the unit, which is what you use to close off or adapt the top opening when you are not landing a hub there.
10) Can the utility lock this Milbank meter socket cover?
On the U4013-X-BLG build, yes. It carries a 7/8 inch knockout with an angle bracket for a barrel lock, which is what utilities and facility managers use to keep the cover secured against tampering. The plain side bussed U4013-X does not carry that provision, so if your utility requires barrel lock sealing, order the BLG.
11) Is this meter socket good for 480Y/277 volt service?
The voltage rating is 600 volts AC, which covers 480Y/277 as well as 208Y/120 three phase systems. What decides fit is the meter form the utility assigns, not the voltage alone, since the 7 terminal jaw arrangement has to match the form they intend to install.
12) Can I meter two tenants off one of these Milbank 320 amp sockets?
No. It is a single meter position socket. For two or more metered tenants you need a multi-position meter stack or a gang socket, not this unit. If you are standardizing a multi-family or retail center, size the stack to the number of tenants first, then match jaw count and bypass style to the utility spec.
13) What insulates the jaws in this Milbank socket, and will it hold up in a hot mechanical room or coastal site?
Glass polyester carries the jaws, which is the standard high-strength insulating base for commercial sockets at this rating. The can is G90 galvanized steel with a powder coat finish over it, a two-layer corrosion approach that is why the unit carries a Type 3R outdoor rating.
How fast can I get the Milbank U4013-X-BLG 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 U4013-X-BLG come with a warranty?
Absolutely. The Milbank U4013-X-BLG 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 U4013-X-BLG?
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 U4013-X-BLG from ZenSupply?
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