Milbank 320A 1-Phase Ringless ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,168.06
Milbank U5864-X-HSP 5 Terminal Ringless Large Closing Plate Lever Bypass Stainless Steel Hasp Wide Shell

Milbank 320A 1-Phase Ringless Meter Socket with Lever Bypass and Stainless Steel Hasp

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Model: U5864-X-HSP

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

$1,168.06
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Milbank 320A 1-Phase Ringless Meter Socket with Lever Bypass and Stainless Steel Hasp

Professional metering solution with integrated bypass capability

The Milbank 320A 1-Phase Ringless Meter Socket delivers reliable electrical metering with integrated lever bypass functionality and stainless steel hasp security. This surface-mount meter socket features G90 galvanized steel construction with powder coat finish, 5-terminal configuration, and Type 3R enclosure rating for versatile indoor/outdoor applications. The unit accommodates both overhead and underground cable entry with bonded ground strap equipment grounding.

Professional Features & Benefits

  • 320 Continuous Ampere Rating: Handles substantial electrical loads for commercial and residential applications with reliable current capacity.
  • Lever Bypass Provision: Enables safe meter maintenance and replacement without service interruption through integrated bypass mechanism.
  • Type 3R Enclosure Rating: Provides weather-resistant protection suitable for outdoor installations and harsh environmental conditions.
  • 5-Terminal Ringless Design: Simplifies installation and maintenance with secure jaw connections and eliminates need for meter rings.
  • G90 Galvanized Steel Construction: Ensures long-term durability with corrosion-resistant galvanized steel and protective powder coat finish.
  • UL Listed Certification: Meets rigorous safety standards for professional electrical installations and code compliance.
  • Stainless Steel Hasp: Provides secure meter access control with corrosion-resistant stainless steel construction.

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Bypass Provision: Lever Bypass
  • Cable Entry: Overhead or Underground
  • Departent: Electrical
  • Equipment Ground: Bonded Ground Strap
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Large Closing Plate
  • Insulation: Glass Polyester
  • Main Breaker Size: No Main Breaker
  • Number Of Jaws: 5 Terminal
  • Number Of Main Breakers: 0
  • Number Of Meter Positions: 1 Position
  • Number Of Receptacles: 0
  • Phase: 1 Phase
  • Product Family Code: 5T32
  • Product Height: 28.25 IN
  • Product Length: 5.93 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 5.93L x 16W x28.25H
  • 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: 16 IN

Professional Applications

  • Commercial Building Metering
  • Residential Service Entrance
  • Multi-Unit Properties
  • Industrial Facilities
  • Utility Service Points
  • Electrical Contractor Projects
  • Municipal Infrastructure

Why Choose Milbank Quality?

Milbank meter sockets provide dependable electrical metering solutions with UL Listed certification and Type 3R weather-resistant construction. The G90 galvanized steel with powder coat finish ensures long-term performance in demanding environments, while the 5-terminal ringless design simplifies installation and maintenance for professional electrical applications.

Manufacturer Resources

Product Specs

Amperage Rating:
320 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
Lever Bypass
Cable Entry:
Overhead or Underground
Equipment Ground:
Bonded Ground Strap
Frequency Rating:
60 Hertz
Hub Closing Plate:
Large Closing Plate
Insulation:
Glass Polyester
Main Breaker Size:
No Main Breaker
Number Of Jaws:
5 Terminal
Number Of Main Breakers:
0
Number Of Meter Positions:
1 Position
Number Of Receptacles:
0
Phase:
1 Phase
Product Family Code:
5T32
Product Height:
28.25 IN
Product Length:
5.93 IN
Product Size:
5.93L x 16W x28.25H
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:
16 IN
Department:
Electrical
Product Subgroup:
Metering & Meter Sockets
Product Group:
Power Distribution

Milbank U5864-X-HSP – Frequently Asked Questions

1) Does the Milbank U5864-X-HSP meter socket have a main breaker in it?
No. The U5864-X-HSP is a socket only, with no main breaker and no factory-installed disconnect. You'll need a separate service disconnect downstream to meet code, plus whatever panel the job calls for. It's also a single meter position, so it serves one service, not a duplex or multi-tenant arrangement.
2) Is a 5-jaw ringless socket right for a 320 amp single-phase residential service?
That's exactly the configuration. Five terminals on a single-phase 3-wire service gives you the four line/load jaws plus the fifth neutral-sensing jaw many utilities require. Rated 320 continuous amps at 600 volts AC, 60 Hz. Confirm with your serving utility first though, since jaw count and ringless versus ring-type are dictated by the utility's meter standard, not by the installer.
3) Can this Milbank socket be mounted outside on an exterior wall?
Yes. It carries a Type 3R enclosure rating and is UL Listed, so it's built for outdoor wall mounting in the weather. The shell is G90 galvanized steel with a powder coat finish, and the hasp is stainless so it won't rust out in a coastal or wet location. It's surface mount, so it lands flat on the wall rather than recessing into it.
4) Will this meter socket work for an underground lateral, or is it overhead only?
Either. The U5864-X-HSP accepts overhead or underground cable entry. It ships with a large hub closing plate on top, so for an overhead drop you swap in the correct hub for your conduit size, and for an underground service you leave the closing plate in place and bring the lateral up through the bottom.
5) What size lugs or terminals does the Milbank 320A socket have, and will my 4/0 or 350 kcmil service conductors land?
The line and load connections are 3/8 inch stud terminals rather than screw-type mechanical lugs. That means you land the conductors on compression or mechanical lugs with a 3/8 inch bolt hole, sized to your conductor. Plan the lug selection around the wire you're actually pulling for the 320 amp continuous rating, and buy those separately, since the studs themselves don't accept bare conductor.
6) Can I use this Milbank socket on a 3-phase service?
No. It's a single-phase, 5-jaw socket and it won't meter a three-phase service. A 3-phase 4-wire service needs a 7-jaw socket instead. Check the jaw count on the meter the utility intends to set before you order.
7) What does lever bypass do on a meter socket, and do I need it?
Lever bypass lets the utility or a qualified tech shunt current around the meter so the meter can be pulled and changed without dropping power to the building. On a 320 amp service feeding tenants or a commercial load, that's the difference between a meter swap and an outage. Many utilities require bypass at this amperage. If yours doesn't, a non-bypass socket is the simpler part, but bypass is the safer field choice for occupied buildings.
8) How much wall space do I need for the Milbank U5864-X-HSP?
The enclosure measures 5.93 inches deep by 16 inches wide by 28.25 inches high. Lay that out before you set the riser, because the 16 inch width is wider than a standard single-meter shell and it can crowd a downspout, a corner, or an adjacent disconnect. Leave working clearance in front per code and keep the meter face in the utility's required height window.
9) Do I need a separate grounding kit with this Milbank socket?
No separate bonding kit is needed for the socket itself. Equipment grounding is by a bonded ground strap built into the unit, which bonds the neutral to the enclosure at the meter. Whether that bond stays in or comes out depends on whether this point is your service disconnect location, so follow the utility's and the AHJ's direction on the neutral-to-ground bond.
10) I'm standardizing meter sockets across a portfolio. What part number and specs do I put on the spec sheet?
Milbank U5864-X-HSP, product family 5T32: single phase, 1 meter position, 5 terminal ringless, lever bypass, 320 continuous amps, 600 VAC, 60 Hz, Type 3R, UL Listed, surface mount, G90 galvanized steel. UNSPSC 39121102 for your procurement system. Note there's no main breaker in it, so the disconnect is a separate line item on any package you build around it.
11) Is the stainless steel hasp on this Milbank socket for a utility seal or for a padlock?
It takes either. The hasp is the lockable point on the ringless cover, so the utility can seal it or you can padlock it to keep the cover closed on a jobsite or an unoccupied property. Stainless was specified so the hasp doesn't seize or corrode after years outdoors, which is the usual failure on a plated hasp in a wet climate.
12) What insulates the jaws in this Milbank meter socket?
Glass polyester carries the jaw assembly. It's the standard insulating base material for a socket at this rating, dimensionally stable and non-tracking at 600 volts, which matters on a 320 amp continuous service where the jaws see real heat under load.
13) Does this socket have a receptacle or outlet built into it?
No receptacles. The Milbank U5864-X-HSP is a bare metering enclosure, 1 meter position and nothing else in the can. If the job calls for a GFCI convenience outlet at the service point, that's a separate device.
How fast can I get the Milbank U5864-X-HSP 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 U5864-X-HSP come with a warranty?
Absolutely. The Milbank U5864-X-HSP 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 U5864-X-HSP?
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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