Milbank 200A 1-Phase Ringless ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$474.26
Milbank U5777-O 4 Terminal Ringless Plain Top Side Bussed No Bypass

Milbank 200A 1-Phase Ringless Meter Socket with Underground Side Wireway Entry

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Model: U5777-O

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

$474.26
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Milbank 200A 1-Phase Ringless Meter Socket with Underground Side Wireway Entry

Professional electrical metering solution with durable galvanized steel construction

The Milbank 200A 1-Phase Ringless Meter Socket delivers reliable electrical metering for residential and commercial applications. Featuring a robust G90 galvanized steel construction with powder coat finish and Type 3R weatherproof rating, this surface-mount meter socket provides 200 continuous ampere capacity at 600V AC with underground cable entry through side wireway configuration. The 4-terminal design with plain top configuration and glass polyester insulation ensures dependable performance in outdoor installations.

Professional Features & Benefits

  • 200 Continuous Ampere Rating: Handles substantial electrical loads for residential and light commercial applications with reliable capacity management.
  • G90 Galvanized Steel with Powder Coat: Provides superior corrosion resistance and long-lasting durability in outdoor environments.
  • Type 3R Weatherproof Rating: Ensures reliable operation in rain, sleet, and snow conditions with proper outdoor protection.
  • Underground Side Wireway Entry: Accommodates underground cable installations with convenient side access for professional wiring.
  • 4-Terminal Ringless Design: Simplifies meter installation and removal without requiring jaw manipulation for enhanced service efficiency.
  • UL Listed Certification: Meets rigorous safety standards for electrical equipment ensuring code compliance and professional installation confidence.
  • Glass Polyester Insulation: Provides excellent electrical isolation and thermal stability for consistent performance across temperature ranges.

Technical Specifications

  • Amperage Rating: 200 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Bypass Provision: No Bypass
  • Cable Entry: Underground with Side Wireway
  • Departent: Electrical
  • Equipment Ground: 2 Barrel Ground Lug
  • 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: 1 Position
  • Number Of Receptacles: 0
  • Phase: 1 Phase
  • Product Family Code: 4T20
  • Product Height: 30 IN
  • Product Length: 4.844 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 4.844L x 15W x30H
  • 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: 15 IN

Professional Applications

  • Residential electrical service installations requiring 200A capacity
  • Small commercial buildings and retail establishments
  • Multi-unit residential properties and condominiums
  • Professional offices and service buildings
  • Light industrial facilities with moderate power requirements
  • Underground utility service connections
  • Outdoor electrical metering installations

Why Choose Milbank Quality?

Milbank meter sockets deliver proven reliability with UL Listed certification and Type 3R weatherproof protection. The G90 galvanized steel construction with powder coat finish ensures long-term durability in demanding outdoor environments, while the professional 4-terminal ringless design simplifies installation and maintenance for electrical contractors and utility professionals.

Manufacturer Resources

Product Specs

Amperage Rating:
200 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
No Bypass
Cable Entry:
Underground with Side Wireway
Equipment Ground:
2 Barrel Ground Lug
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:
1 Position
Number Of Receptacles:
0
Phase:
1 Phase
Product Family Code:
4T20
Product Height:
30 IN
Product Length:
4.844 IN
Product Size:
4.844L x 15W x30H
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:
200
Product Width:
15 IN
Department:
Electrical
Product Subgroup:
Electrical
Product Group:
Metering & Service Entrance

Milbank U5777-O – Frequently Asked Questions

1) Will the Milbank U5777-O meter socket work for an underground service lateral?
Yes, that is exactly what the U5777-O is built for. Cable entry is underground through a side wireway, so the service conductors come up from below and land in the side gutter rather than through the top. The top is a plain top with no hub opening, so there is no provision for an overhead weatherhead drop. For an overhead service you need a socket with a hub or hub opening top instead.
2) Is this a 200 amp single phase meter socket, and what voltage is it rated for?
The Milbank U5777-O is rated 200 continuous amperes, single phase, 600 volts AC at 60 Hz, with one meter position. That covers standard 120/240V residential and light commercial 200A services. It is a single-position socket only, so a duplex or multi-gang application needs a different unit.
3) Does the Milbank U5777-O have a main breaker or a meter bypass?
No on both counts. The U5777-O is a meter socket only, with no main breaker and no bypass provision. Overcurrent protection has to come from a separate main breaker or main disconnect downstream, and because there is no bypass, the meter must be pulled to de-energize for service work. If your utility requires a lever bypass on the socket, this is not the right unit.
4) What size conductors will land in the load side lugs on this Milbank 200A socket?
Load side wire range is 6 AWG through 350 kcmil, on 3/8 inch stud terminals. That covers the usual 200A service conductor sizes, including parallel-free 4/0 copper or 250 to 350 kcmil aluminum runs. There is also a 2-barrel ground lug for the equipment grounding conductors.
5) Can this meter socket be mounted outdoors on an exterior wall?
Yes. The U5777-O is a Type 3R rainproof enclosure in G90 galvanized steel with a powder coat finish, and it is UL Listed. It is a surface mount unit, so it bolts to the face of the wall or a meter pole backboard rather than recessing into it.
6) What does ringless mean on a meter socket, and does the utility have to approve it?
Ringless means the cover secures over the meter without a separate sealing ring, so the lineman pulls the cover to access the meter instead of cutting a ring. The U5777-O is a 4-terminal ringless socket. Utilities specify either ringless or ring type in their service requirements and the two are not interchangeable, so confirm your serving utility accepts ringless before ordering.
7) Is a 4-terminal socket right for a 120/240V single phase residential service?
Yes. A 4-jaw socket is the standard configuration for single phase three wire 120/240V self-contained metering, and the U5777-O is 4 terminal, single phase, one position. Network or three phase services use 5-jaw and 7-jaw sockets respectively, so if your utility calls for a fifth jaw this unit will not take their meter.
8) What holds the meter jaws on this socket and how does it hold up to heat?
The jaw assembly is mounted on glass polyester insulation, which keeps its dielectric and dimensional stability through the temperature swings an outdoor 200A socket sees. Paired with the galvanized steel enclosure and powder coat, it is built for permanent exterior service entrance duty.
How fast can I get the Milbank U5777-O 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 U5777-O come with a warranty?
Absolutely. The Milbank U5777-O 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 U5777-O?
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 U5777-O from ZenSupply?
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