Milbank Ringless Meter Socket ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$7,943.04
Milbank U5794–U5799 Ringless Meter Socket - 400A Lever Bypass, 480V Cold Sequence

Milbank Ringless Meter Socket with 400A Main Breaker and Lever Bypass - 320A Continuous, 600V Surface Mount

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Model: U5799-O-400-CB-BL

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

$7,943.04
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Milbank Ringless Meter Socket with 400A Main Breaker and Lever Bypass

Professional electrical metering solution with integrated main breaker protection

The Milbank Ringless Meter Socket delivers reliable electrical metering and main breaker protection with 320A continuous amperage rating and 600V AC capacity. Featuring G90 galvanized steel construction with powder coat finish and Type 3R enclosure rating, this surface mount unit provides durable performance for professional electrical installations. The integrated 400A main breaker and lever bypass provision offer enhanced operational flexibility and safety.

Professional Features & Benefits

  • 320A Continuous Rating: Provides reliable power handling capacity for demanding electrical applications with professional-grade amperage performance.
  • 400A Main Breaker: Integrated main breaker protection ensures safe electrical operation and convenient circuit protection in a single unit.
  • Lever Bypass Provision: Enables safe maintenance and service operations while maintaining system flexibility and operational continuity.
  • Type 3R Enclosure: Weather-resistant construction protects internal components from outdoor environmental conditions and moisture.
  • G90 Galvanized Steel: Durable construction with powder coat finish provides long-lasting corrosion resistance and professional appearance.
  • UL Listed: Meets rigorous safety and performance standards ensuring reliable operation and code compliance.
  • Single Position Design: Streamlined metering solution optimized for single meter installations with efficient space utilization.

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket With Main
  • Barrel Lock Provision: 9/16 Inch Knockout and Angle Bracket for Barrel Lock Provision
  • Brand Name: Milbank
  • Bypass Provision: Lever Bypass
  • Departent: Electrical
  • Frequency Rating: 60 Hertz
  • Insulation: Glass Polyester
  • Line Side Wire Range: Two 3/0 AWG - 500 kcmil
  • Load Side Wire Range: 4 AWG - 600 kcmil or Two 1/0 AWG - 250 kcmil
  • Main Breaker Size: One 400 Ampere Main Breaker
  • Number Of Main Breakers: 1
  • Number Of Meter Positions: 1 Position
  • Number Of Receptacles: 0
  • Product Family Code: COLBD
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Type: Ringless Meter Socket
  • Standard: UL Listed;Type 3R
  • Terminal: Single Mechanical
  • Unspsc Number: 39121102
  • Voltage Rating: 600 Volts Alternating Current

Professional Applications

  • Commercial Building Electrical Service
  • Industrial Facility Power Distribution
  • 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 G90 galvanized steel with powder coat finish ensures long-term durability and professional performance in demanding electrical applications, backed by comprehensive safety standards and quality engineering.

Manufacturer Resources

Product Specs

Amperage Rating:
320 Continuous Ampere
Application:
Meter Socket With Main
Brand Name:
Milbank
Bypass Provision:
Lever Bypass
Frequency Rating:
60 Hertz
Insulation:
Glass Polyester
Line Side Wire Range:
Two 3/0 AWG - 500 kcmil
Load Side Wire Range:
4 AWG - 600 kcmil or Two 1/0 AWG - 250 kcmil
Main Breaker Size:
One 400 Ampere Main Breaker
Number Of Main Breakers:
1
Number Of Meter Positions:
1 Position
Number Of Receptacles:
0
Product Family Code:
COLBD
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
Department:
Electrical
Product Subgroup:
Electrical
Insulation Type:
Glass Polyester
Installation Category:
Surface Mount
Terminal Type:
Single Mechanical
Product Details:
Ringless Meter Socket
Frequency:
60 hertz

Milbank U5799-O-400-CB-BL – Frequently Asked Questions

1) How do I know whether to order the 4 terminal, 5 terminal or 7 terminal version of this Milbank socket?
Terminal count is set by the service the utility is feeding you, so confirm it with the serving utility before ordering. The Milbank 400A lever bypass socket comes as 4 terminal (U5794-X-400-CB), 5 terminal with the 5th jaw at the 9 o'clock position (U5794-X-400-5T-CB), and 7 terminal (U5796-X-400-CB). Four jaw is the single phase three wire arrangement, five jaw adds the network terminal some utilities require, and seven jaw is used for three phase four wire metering. The wrong jaw configuration will not accept the utility's meter, and it is not field convertible.
2) What size conductors can I land in this 400 amp Milbank meter socket?
Line side lugs take two 3/0 AWG through 500 kcmil per phase, so a parallel run is expected on the utility side of a 320A continuous service. Load side accepts 4 AWG through 600 kcmil, or two conductors of 1/0 AWG through 250 kcmil if you are paralleling out to the panel. Terminals are single mechanical type. Check your conductor ampacity against the 320A continuous rating before you cut cable.
3) Can this Milbank meter socket be mounted outside?
Yes. The enclosure is Type 3R and UL Listed, which is the standard outdoor rain tight rating for service equipment on an exterior wall. The body is G90 galvanized steel with a powder coat finish for corrosion resistance. It is a surface mount unit, so it bolts to the wall face rather than recessing into it, and you need to allow for the breaker and bypass depth standing proud of the wall.
4) Do I still need a separate service disconnect with this Milbank meter socket?
No separate outdoor disconnect is needed for the service itself. This is a meter socket with main, carrying one 400 ampere main breaker inside the same enclosure, so the metering and the service disconnecting means are combined in one surface mounted Type 3R unit. What it does not include is branch distribution: it has one meter position and no receptacles, so downstream panelboards are a separate order.
5) Can I use this Milbank socket to meter two units in a duplex?
No. The U5794 through U5799 400A sockets are single position, one meter per enclosure. A duplex or any multi-family building where each tenant is separately billed needs a multi-position meter stack or one socket per unit. Use this unit where a single 400A service is metered as one account, such as a house meter, a commercial tenant space, or a single large residence.
6) What does the lever bypass do and why would the utility require it?
Lever bypass lets the utility shunt current around the meter socket jaws so the meter can be pulled or changed without dropping service to the building. Many utilities require it on services at this size, and on occupied commercial or multi-family buildings it is what keeps tenants energized during a meter swap. The Milbank U5794 through U5799 400A sockets are built with the lever bypass provision as standard, so there is no separate bypass option to specify.
7) What is the difference between the plain top U5799 and the standard U5796 Milbank socket?
The U5799-O-400-CB is the plain top version, meaning the enclosure ships without a factory hub opening on top, so you drill or punch for the raceway entry you actually need or run the service underground. The U5796-X-400-CB has the standard top arrangement. Both are 7 terminal, 400A main breaker, lever bypass units. Choose plain top when the utility dictates a specific hub or conduit size, or when the feed comes from below.
8) Does this Milbank meter socket come ready for a utility barrel lock?
Two ways to get there. Every unit in the range carries a 9/16 inch knockout plus an angle bracket provision for a barrel lock. If you want the bracket supplied and fitted, order one of the BL versions: U5796-X-400-CB-BL, U5796-X-400-CB-BL-NE, or the plain top U5799-O-400-CB-BL. Utilities that seal with a barrel lock rather than a wire seal will usually reject a socket without it.
9) What is the New England version of the Milbank U5796 socket?
U5796-X-400-CB-BL-NE is the 7 terminal, 400A main breaker, lever bypass socket with barrel lock bracket built to the New England utility arrangement. If your serving utility in that region has published a New England specific meter socket requirement, that is the part number to quote. Elsewhere, the standard U5796-X-400-CB-BL is the equivalent unit.
10) Will this socket work on a 480V three phase service?
The socket is rated 600 volts AC at 60 hertz with glass polyester insulation, so it covers 480V three phase service as well as lower voltage systems. For a three phase four wire meter you want the 7 terminal configuration, such as U5796-X-400-CB. Confirm the metering arrangement with the utility, because the jaw count is fixed at the factory.
How fast can I get the Milbank U5799-O-400-CB-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 U5799-O-400-CB-BL come with a warranty?
Absolutely. The Milbank U5799-O-400-CB-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 U5799-O-400-CB-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 U5799-O-400-CB-BL from ZenSupply?
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