Milbank 320A Dual Position Rin...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,346.57
Milbank U6158-O-MNV 4 Terminal Ringless Plain Top 2 Position 1-320 Ampere 1-100 Ampere Lever Bypass Minnesota Valley

Milbank 320A Dual Position Ringless Meter Socket with Lever Bypass Underground Service

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Model: U6158-O-MNV

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

$3,346.57
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Milbank 320A Dual Position Ringless Meter Socket with Lever Bypass Underground Service

Professional dual-position metering solution for underground electrical service applications

The Milbank 320A dual position ringless meter socket delivers reliable electrical metering and distribution for underground service installations. This professional-grade unit features a robust G90 galvanized steel construction with powder coat finish, providing Type 3R weather protection for outdoor applications. The lever bypass provision enables safe meter maintenance while maintaining service continuity, making it ideal for multi-unit residential and commercial properties requiring dual metering capabilities.

Professional Features & Benefits

  • 320 Ampere Continuous Rating: Handles high-capacity electrical loads with reliable performance for demanding applications
  • Dual Position Configuration: Accommodates two separate meters for multi-unit billing and load management flexibility
  • Lever Bypass System: Enables safe meter removal and replacement without service interruption for maintenance efficiency
  • Underground Cable Entry: Designed specifically for underground service connections with proper cable management
  • Type 3R Weather Protection: G90 galvanized steel with powder coat finish provides superior corrosion resistance and outdoor durability
  • UL Listed Safety: Meets rigorous safety standards for reliable operation and code compliance
  • Single Phase 600V Rating: Compatible with standard residential and light commercial voltage requirements

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Bypass Provision: Lever Bypass
  • Cable Entry: Underground
  • Departent: Electrical
  • Equipment Ground: Triplex Ground
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Plain Top
  • Insulation: Glass Polyester
  • Load Side Wire Range: 6 AWG - 350 kcmil
  • Main Breaker Size: No Main Breaker
  • Number Of Jaws: 4 Terminal
  • Number Of Main Breakers: 0
  • Number Of Meter Positions: 2 Positions
  • Number Of Receptacles: 0
  • Phase: 1 Phase
  • Product Family Code: LBMGS
  • Product Height: 36 IN
  • Product Length: 4.844 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 4.844L x 23W x36H
  • Product Type: Ringless Meter Socket
  • Standard: UL Listed;Type 3R
  • Terminal: Single Mechanical
  • Unspsc Number: 39121102
  • Voltage Rating: 600 Volts Alternating Current
  • Width: 23 IN

Professional Applications

  • Multi-Unit Residential Properties requiring separate metering
  • Commercial Buildings with dual tenant spaces
  • Duplex and Townhome Developments
  • Small Commercial Facilities with multiple occupancies
  • Underground Service Installations
  • Property Management Applications
  • Municipal and Utility Metering Projects

Why Choose Milbank Quality?

Milbank delivers proven reliability with UL Listed safety certification and Type 3R weather protection. The robust G90 galvanized steel construction with powder coat finish ensures long-term durability in demanding outdoor environments, while the professional-grade design supports efficient installation and maintenance for electrical contractors and utility professionals.

Manufacturer Resources

Product Specs

Amperage Rating:
320 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
Lever Bypass
Cable Entry:
Underground
Equipment Ground:
Triplex Ground
Frequency Rating:
60 Hertz
Hub Closing Plate:
Plain Top
Insulation:
Glass Polyester
Load Side Wire Range:
6 AWG - 350 kcmil
Main Breaker Size:
No Main Breaker
Number Of Jaws:
4 Terminal
Number Of Main Breakers:
0
Number Of Meter Positions:
2 Positions
Number Of Receptacles:
0
Phase:
1 Phase
Product Family Code:
LBMGS
Product Height:
36 IN
Product Length:
4.844 IN
Product Size:
4.844L x 23W x36H
Product Type:
Ringless Meter Socket
Standards:
UL Listed;Type 3R
Terminal:
Single Mechanical
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:
23 IN
Department:
Electrical
Product Subgroup:
Metering & Meter Sockets
Product Group:
Power Distribution

Milbank U6158-O-MNV – Frequently Asked Questions

1) Will the Milbank U6158-O-MNV meter socket work on overhead service, or is it underground only?
Underground only. The U6158-O-MNV is built for underground cable entry and comes with a plain top (no hub opening), so there is no provision for a service mast or weatherhead feed. If the service drop is overhead, you need an overhead-entry socket with a hub or hub opening instead.
2) Does this Milbank 320A dual position socket include a main breaker or disconnect?
No. The U6158-O-MNV is a meter socket only, with no main breaker and no receptacles. Overcurrent protection has to be downstream in a separate panel or disconnect. If you need metering and the main device in one enclosure, you want a meter-main combination unit rather than this socket.
3) What conductor sizes can I land on the load side of the Milbank U6158-O-MNV?
Load side lugs take 6 AWG through 350 kcmil, single mechanical terminals. That range covers typical 320A class service conductors as well as the smaller feeder on the second position.
4) Is this socket a 4-jaw single phase unit, and will it accept a standard residential meter?
It is a 4 terminal (4-jaw) socket, single phase, rated 600 VAC at 60 Hz. That is the standard configuration for single phase residential and light commercial self-contained metering. A 3-phase utility meter requiring 7 jaws will not fit.
5) Is the U6158-O-MNV approved for the utility in my area?
This is a Minnesota Valley spec socket, part of Milbank's LBMGS lever bypass family. Utility-approved socket specs vary by territory, so the unit is built to one utility's requirements. If you are outside that service area, verify the model appears on your serving utility's approved meter socket list.
6) How much wall space do I need to mount this 320 amp dual position meter socket?
Plan for a 23 inch wide by 36 inch tall footprint, with 4.844 inches of depth off the wall. It is a surface mount enclosure, so you are fastening it flat to the structure, not recessing it.
7) Can this be installed outdoors, exposed to rain?
Yes. The enclosure is UL Listed and Type 3R rated, built from G90 galvanized steel with a powder coat finish, so it is intended for outdoor wall mounting in rain and sleet conditions. Type 3R does not cover hosedown or submersion.
8) What does the lever bypass on this Milbank socket actually let my electrician do?
The lever bypass lets the meter be pulled and replaced without dropping power to the load. For a property manager, that means a meter change or utility test does not mean a tenant outage. Some utilities require bypass on 320A class sockets, so confirm it matches your utility's approved list before ordering.
9) What is a ringless meter socket and does it change which meter cover I need?
Ringless means the cover itself secures over the meter instead of using a separate sealing ring. The U6158-O-MNV ships as a ringless design, so you install the utility's ringless cover, not a ring-type. Ring and ringless covers are not interchangeable, which matters if you are standardizing sockets across a property.
10) Is there a grounding provision in this meter socket, or do I add one?
A triplex ground is provided in the enclosure, with glass polyester insulation on the internal supports. No separate ground kit is needed for the socket itself; the grounding electrode conductor connection still has to be made per code for the service.
How fast can I get the Milbank U6158-O-MNV 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 U6158-O-MNV come with a warranty?
Absolutely. The Milbank U6158-O-MNV 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 U6158-O-MNV?
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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