Milbank 320A 1-Phase Ringless ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$884.71
Milbank U1729-X-DPL 4 Terminal Ringless Meter Socket Large Closing Plate Lever Bypass Delmarva Power And Light

Milbank 320A 1-Phase Ringless Meter Socket with Lever Bypass and Large Closing Plate (2)

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Model: U1729-X-DPL

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

$884.71
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Milbank 320A 1-Phase Ringless Meter Socket with Lever Bypass and Large Closing Plate

Professional Utility Metering Solution with Integrated Bypass Capability

The Milbank 320A 1-Phase Ringless Meter Socket delivers reliable utility metering with integrated lever bypass functionality for professional electrical installations. Featuring robust G90 galvanized steel construction with powder coat finish and Type 3R enclosure rating, this surface-mount meter socket provides 320 continuous ampere capacity at 600V AC with glass polyester insulation and 3 barrel ground lug equipment grounding for dependable service in demanding applications.

Professional Features & Benefits

  • 320 Continuous Ampere Rating: Handles high-capacity electrical loads for commercial and industrial metering applications with reliable performance.
  • Lever Bypass Provision: Enables safe meter maintenance and replacement without service interruption, reducing downtime and operational costs.
  • Type 3R Enclosure Rating: Provides weather-resistant protection for outdoor installations with reliable performance in harsh environmental conditions.
  • G90 Galvanized Steel Construction: Delivers superior corrosion resistance and structural integrity with powder coat finish for extended service life.
  • 4 Terminal Ringless Design: Simplifies installation and maintenance with secure electrical connections and professional appearance.
  • UL Listed Certification: Ensures compliance with safety standards and code requirements for professional electrical installations.
  • Underground Cable Entry: Accommodates underground service connections with proper sealing and protection for reliable operation.

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Bypass Provision: Lever Bypass
  • Cable Entry: Underground
  • Departent: Electrical
  • Equipment Ground: 3 Barrel Ground Lug
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Large Closing Plate
  • Insulation: Glass Polyester
  • 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: 4T32
  • Product Height: 30 IN
  • Product Length: 4.875 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 4.875L x 15W x30H
  • Product Type: Ringless Meter Socket
  • Special Features: Delmarva Power and Light
  • Standard: UL Listed;Type 3R
  • Terminal: 3/8 Inch Stud
  • Unspsc Number: 39121102
  • Voltage Rating: 600 Volts Alternating Current
  • Width: 15 IN

Professional Applications

  • Commercial Building Utility Metering
  • Industrial Facility Power Monitoring
  • Multi-Unit Residential Properties
  • Retail and Office Buildings
  • Municipal and Government Facilities
  • Educational Institution Power Systems
  • Healthcare Facility Electrical Infrastructure

Why Choose Milbank Quality?

Milbank delivers proven reliability with UL Listed certification and Type 3R weather-resistant construction. The robust G90 galvanized steel with powder coat finish ensures long-term durability, while the professional 4 terminal ringless design and integrated lever bypass provide the performance and serviceability demanded by electrical professionals for critical utility metering applications.

Manufacturer Resources

Product Specs

Amperage Rating:
320 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
Lever Bypass
Cable Entry:
Underground
Equipment Ground:
3 Barrel Ground Lug
Frequency Rating:
60 Hertz
Hub Closing Plate:
Large Closing Plate
Insulation:
Glass Polyester
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:
4T32
Product Height:
30 IN
Product Length:
4.875 IN
Product Size:
4.875L x 15W x30H
Product Type:
Ringless Meter Socket
Special Features:
Delmarva Power and Light
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:
15 IN
Department:
Electrical
Product Subgroup:
Metering & Meter Sockets
Product Group:
Power Distribution

Milbank U1729-X-DPL – Frequently Asked Questions

1) Is the Milbank U1729-X-DPL meter socket approved for Delmarva Power and Light service?
The U1729-X-DPL is built to the Delmarva Power and Light specification, which is why the -DPL suffix is on the model number. If you are working in another utility's territory, pull their approved meter socket list first, because utilities accept only sockets built to their own requirements even when the electrical ratings match.
2) Does this 320 amp Milbank meter socket include a main breaker or disconnect?
No breaker. The U1729-X-DPL is a meter socket only, with no main breaker and no receptacles, so the service disconnect and overcurrent protection have to come from a separate panel or disconnect downstream. The lever bypass lets the meter be pulled and changed without dropping service, but it is not a service disconnect.
3) Will a 4 terminal single phase meter socket work on my 320 amp 120/240V residential or small commercial service?
Yes, that is exactly the application. Four jaws, 1 phase, 320 continuous amps, rated 600V AC at 60 Hz, single meter position. A 4-jaw socket is the standard single phase 3-wire configuration; if your service is three phase you need a 7-jaw socket instead, not this one.
4) Can I use this meter socket for an overhead service drop?
It is configured for underground cable entry, and it ships with a large hub closing plate rather than an open hub. For an overhead service you would want a socket set up for overhead entry with a hub for the mast, so this one is the wrong pick on a drop.
5) How much wall space do I need for this Milbank 320A socket, and how is it mounted?
Plan for a surface-mount footprint of 4.875 inches deep by 15 inches wide by 30 inches high. It bolts flat to the wall or meter pole backing, so you need 30 inches of clear vertical run plus whatever height the utility requires to the meter center.
6) What size conductors land in this socket and how do they terminate?
Line and load connections are 3/8 inch stud terminals, so the service and load conductors terminate on lugs or compression fittings sized for a 3/8 inch bolt. Equipment grounding is through a 3 barrel ground lug in the can. Glass polyester insulation carries the jaw assembly.
7) Is this Milbank socket rated for outdoor mounting in rain and snow?
Type 3R, which is the rainproof outdoor rating meter sockets are normally supplied in, and it is UL Listed. The enclosure is G90 galvanized steel with a powder coat finish for corrosion resistance. Type 3R is not a washdown or dust-tight rating, so it is not the choice for a hosed-down or heavy-dust interior location.
8) Why does a ringless meter socket need a closing plate, and what does the lever bypass do for my crew?
Ringless means the meter is retained by the socket cover rather than a sealing ring, so the utility seals the cover instead of a ring. The large closing plate blanks off the hub opening since the service comes in underground. The lever bypass lets the utility or your electrician shunt current around the meter to change or test it without killing power to the building, which matters on occupied multi-family and commercial loads.
9) I need to standardize meter sockets across a property. What is the exact part number to spec?
Specify Milbank U1729-X-DPL, a single position 320A 1-phase 4-terminal ringless socket with lever bypass, underground entry and large closing plate, in the 4T32 product family. Repeat orders against that number give you the same can and same jaw configuration on every opening.
How fast can I get the Milbank U1729-X-DPL 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 U1729-X-DPL come with a warranty?
Absolutely. The Milbank U1729-X-DPL 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 U1729-X-DPL?
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 U1729-X-DPL from ZenSupply?
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