Milbank 320A 3-Phase Ringless ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,058.23
Milbank U2120-RXL 7 Terminal Ringless Meter Socket Large Hub Open Adapt To Small Closing Plate Lever Bypass Side Bussed

Milbank 320A 3-Phase Ringless Meter Socket with Lever Bypass and Large Hub Adapter

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Model: U2120-RXL

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

$1,058.23
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Milbank 320A 3-Phase Ringless Meter Socket with Lever Bypass and Large Hub Adapter

Professional 7-Terminal Meter Socket with Versatile Hub Configuration

The Milbank 320A 3-Phase Ringless Meter Socket delivers reliable electrical metering for commercial and industrial applications. Featuring a robust G90 galvanized steel construction with powder coat finish and Type 3R rating, this surface-mount meter socket provides 320 continuous ampere capacity at 600V AC with 7-terminal configuration and lever bypass functionality for enhanced operational flexibility.

Professional Features & Benefits

  • 320 Continuous Ampere Rating: Handles high-capacity electrical loads for demanding commercial and industrial applications with reliable performance.
  • 3-Phase 600V AC Configuration: Supports three-phase power systems commonly used in commercial facilities and industrial operations.
  • Lever Bypass Provision: Enables safe meter maintenance and replacement without interrupting power service to critical loads.
  • Large Hub Opening Adapted to Small Hub Opening: Provides flexible conduit connection options to accommodate various installation requirements.
  • Type 3R UL Listed Enclosure: Weather-resistant rating ensures reliable outdoor performance with protection against rain, sleet, and ice formation.
  • G90 Galvanized Steel with Powder Coat Finish: Corrosion-resistant construction provides long-term durability in harsh environmental conditions.
  • 7-Terminal Ringless Design: Eliminates the need for meter rings while providing secure electrical connections with 3/8 inch stud terminals.

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket
  • 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 Hub Opening Adapted to Small Hub Opening
  • 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: 31.75 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 x31.75H
  • Product Type: Ringless Meter Socket
  • 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 meter sockets deliver proven reliability with UL Listed certification and Type 3R weather-resistant construction. The G90 galvanized steel with powder coat finish ensures long-term durability, while the professional 7-terminal ringless design provides secure connections for demanding electrical 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 Hub Opening Adapted to Small Hub Opening
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:
31.75 IN
Product Length:
6.5 IN
Product Size:
6.5L x 17.75W x31.75H
Product Type:
Ringless Meter Socket
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:
Electrical
Product Group:
Metering & Service Entrance

Milbank U2120-RXL – Frequently Asked Questions

1) Will a Milbank U2120-RXL meter socket work on a 3-phase 4-wire service?
The U2120-RXL is a 7 terminal socket, which is the jaw configuration used for 3-phase 4-wire metering. It is rated 3 phase at 600V AC, 60 Hz, 320 continuous amps. If your service is single phase, this is the wrong socket - you would need a 4 or 5 jaw single phase unit instead. Always confirm the jaw count your serving utility requires before ordering, since the utility owns that spec.
2) Does the Milbank U2120-RXL meter socket include a main breaker or disconnect?
No. The U2120-RXL is a meter socket only - no main breaker and no receptacles. Overcurrent protection has to come from a separate main breaker panel or disconnect downstream. If your inspector wants service disconnect at the meter, you need a meter main combination, not this socket.
3) Can I mount a 320A Milbank ringless meter socket outdoors?
Yes. It is UL Listed with a Type 3R enclosure, which is the outdoor rating for protection against rain, sleet and ice. The shell is G90 galvanized steel with a powder coat finish, and it is a surface mount unit, so it bolts to the wall face rather than recessing into it.
4) What does the lever bypass on this Milbank meter socket actually do for me?
The lever bypass lets a utility or electrician pull and replace the meter without dropping power to the load. On a 320 amp commercial service feeding tenants, a clinic, or a data closet, that is the difference between a meter swap and an outage notice. Sockets without bypass require the service to be de-energized for any meter work.
5) Can I feed this Milbank socket from underground, or is it overhead only?
Either. Cable entry is rated for overhead, underground, and side wireway, so it works for a weatherhead drop, a lateral from a pad transformer, or a gutter feed from adjacent equipment. It also ships with a large hub opening adapted down by a small hub closing plate, so you can land common conduit sizes without buying a separate adapter plate.
6) How much wall space do I need for the Milbank U2120-RXL meter socket?
Plan for 17.75 inches wide by 31.75 inches high, with 6.5 inches of depth off the wall. That depth matters on tight walkways and equipment rooms where working clearance in front of the socket is being measured from the face of the enclosure.
7) What size lugs or terminals does the Milbank U2120-RXL use for line and load conductors?
Connections are made at 3/8 inch stud terminals, and there is a grounding stud for the equipment ground. On a 320 amp service you are typically landing parallel conductors, so size your lugs to the stud and confirm your conductor terminations are rated for the run before you show up on site.
8) Why is this called ringless, and does that matter for my utility?
A ringless socket uses a one-piece cover secured by the utility seal instead of a separate sealing ring around the meter. Utilities specify one style or the other and will not accept the wrong one. The U2120-RXL is the ringless version; if your utility requires ring type, you need a different socket.
9) How many meters can the Milbank U2120-RXL serve?
One. It is a single position socket, so it meters one service. For multi-tenant retail or apartment buildings where each unit needs its own meter, you need a multi-position socket or a metering stack, not this unit.
How fast can I get the Milbank U2120-RXL 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 U2120-RXL come with a warranty?
Absolutely. The Milbank U2120-RXL 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 U2120-RXL?
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 U2120-RXL from ZenSupply?
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