Milbank 320A Ringless Meter So...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$647.07

Milbank 320A Ringless Meter Socket with Lever Bypass and Barrel Lock Provision

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Model: U4778-X-BL

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

$647.07
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Milbank 320A Ringless Meter Socket with Lever Bypass and Barrel Lock Provision

Professional Single-Phase Metering Solution with Advanced Security Features

The Milbank 320A Ringless Meter Socket delivers reliable single-phase electrical metering with integrated lever bypass functionality and barrel lock provision for enhanced security. Constructed with G90 galvanized steel and powder coat finish, this surface-mount meter socket provides 320 continuous ampere capacity with Type 3R enclosure rating for dependable outdoor performance. The unit features glass polyester insulation, dual barrel ground lugs, and accommodates overhead or underground cable entry configurations.

Professional Features & Benefits

  • 320 Continuous Ampere Rating: Handles high-capacity electrical loads for demanding residential and commercial applications with reliable performance.
  • Lever Bypass Provision: Enables safe meter maintenance and replacement without service interruption, reducing downtime and operational costs.
  • Barrel Lock Security: 9/16 inch knockout and angle bracket provision enhances meter security and prevents unauthorized access or tampering.
  • Type 3R Enclosure: Weather-resistant construction protects internal components from rain, sleet, and ice formation for reliable outdoor operation.
  • G90 Galvanized Steel Construction: Powder coat finish over galvanized steel provides superior corrosion resistance and long-term durability.
  • Flexible Cable Entry: Accommodates both overhead and underground service connections for versatile installation options.
  • UL Listed Compliance: Meets rigorous safety standards ensuring code compliance and professional installation confidence.

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket
  • Barrel Lock Provision: 9/16 Inch Knockout and Angle Bracket for Barrel Lock Provision
  • Brand Name: Milbank
  • Bypass Provision: Lever Bypass
  • Cable Entry: Overhead or Underground
  • Departent: Electrical
  • Equipment Ground: 2 Barrel Ground Lug
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Large Closing Plate
  • Insulation: Glass Polyester
  • Line Side Wire Range: 4 AWG - 600 kcmil or Two 1/0 AWG - 250 kcmil
  • Load Side Wire Range: Two 6 AWG - 350 kcmil
  • 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: 38.75 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 x38.75H
  • Product Type: Ringless Meter Socket
  • Special Features: Southern Maryland Electric Coop
  • Standard: UL Listed;Type 3R
  • Terminal: 3/8 Inch Stud
  • Unspsc Number: 39121102
  • Voltage Rating: 600 Volts Alternating Current
  • Width: 17.75 IN

Installation & Operation

  1. Mount the unit in a suitable location with appropriate clearance and access for connections and service.
  2. Connect utility and load conductors following applicable guidelines and the manufacturer's instructions.
  3. Wire generator or power input according to the provided voltage/phase specifications and compatible capacity.
  4. Configure any available load management or control features as supported by the provided specifications.
  5. Test automatic transfer or operational functionality and verify proper performance before placing into service.
  6. Complete final inspection and follow ongoing maintenance practices appropriate to the product category.

Professional Applications

  • High-capacity residential service entrances requiring 320A metering capability
  • Commercial facilities with single-phase electrical distribution systems
  • Multi-unit properties requiring secure meter installations with bypass functionality
  • Professional offices and retail establishments with elevated power demands
  • Light industrial applications requiring weather-resistant outdoor metering
  • Emergency services facilities requiring reliable power monitoring and maintenance access

Why Choose Milbank Quality?

Milbank delivers proven reliability through UL Listed compliance and Type 3R weather-resistant construction. The G90 galvanized steel with powder coat finish ensures long-term durability, while the comprehensive wire range compatibility and dual ground lug configuration provide professional installation flexibility and safety assurance.

Manufacturer Resources

Product Specs

Amperage Rating:
320 Continuous Ampere
Application:
Meter Socket
Barrel Lock Provision:
9/16 Inch Knockout and Angle Bracket for Barrel Lock Provision
Brand Name:
Milbank
Bypass Provision:
Lever Bypass
Cable Entry:
Overhead or Underground
Departent:
Electrical
Equipment Ground:
2 Barrel Ground Lug
Frequency Rating:
60 Hertz
Hub Closing Plate:
Large Closing Plate
Insulation:
Glass Polyester
Line Side Wire Range:
4 AWG - 600 kcmil or Two 1/0 AWG - 250 kcmil
Load Side Wire Range:
Two 6 AWG - 350 kcmil
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:
38.75 IN
Product Length:
6.5 IN
Product Size:
6.5L x 17.75W x38.75H
Product Type:
Ringless Meter Socket
Special Features:
Southern Maryland Electric Coop
Standard:
UL Listed;Type 3R
Terminal:
3/8 Inch Stud
Unspsc Number:
39121102
Voltage Rating:
600 Volts Alternating Current
Width:
17.75 IN
Product Material:
G90 Galvanized Steel with Powder Coat Finish
Product Mounting:
Surface Mount

Milbank U4778-X-BL – Frequently Asked Questions

How fast can I get the Milbank U4778-X-BL 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 U4778-X-BL come with a warranty?
Absolutely. The Milbank U4778-X-BL 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 U4778-X-BL?
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 U4778-X-BL from ZenSupply?
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