Milbank 4 Terminal Meter Socke...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,381.28
Milbank 4 Terminal Meter Socket Enclosure - Ring Type & Ringless Options, Horn Bypass & Main Breaker Variants, Surface Moun

Milbank 4 Terminal Meter Socket Enclosure - 1 Phase 240V Surface Mount with Type 3R Rating

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Model: U4908-O-38GBGR

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

$1,381.28
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Milbank 4 Terminal Meter Socket Enclosure - 1 Phase 240V Surface Mount with Type 3R Rating

Professional temporary power metering solution with weatherproof protection

The Milbank 4 Terminal Meter Socket Enclosure delivers reliable temporary power metering with professional-grade construction. Featuring 1 phase 240V capacity and Type 3R weatherproof rating, this surface mount enclosure accommodates 6 AWG to 350 kcmil conductors on both line and load sides. Built with G90 galvanized steel and powder coat finish for durability, the unit includes glass polyester insulation and lay-in terminals for secure connections.

Professional Features & Benefits

  • 4 Terminal Configuration: Provides complete single-phase metering capability for temporary power applications with reliable jaw connections.
  • 240V AC Rating: Handles standard residential and light commercial voltage requirements with 60 Hz frequency compatibility.
  • Type 3R Enclosure: Weatherproof protection against rain, sleet, and ice formation for outdoor installations.
  • G90 Galvanized Steel Construction: Superior corrosion resistance with powder coat finish ensures long-term durability in harsh environments.
  • Flexible Wire Range: Accommodates 6 AWG to 350 kcmil conductors on both line and load sides for versatile installation options.
  • Surface Mount Design: Simplified installation with direct wall mounting capability and underground cable entry.
  • UL Listed Safety: Meets rigorous safety standards for professional electrical installations and code compliance.

Technical Specifications

  • Application: Temporary Power
  • Brand Name: Milbank
  • Cable Entry: Underground
  • Departent: Electrical
  • Frequency Rating: 60 Hertz
  • Insulation: Glass Polyester
  • Line Side Wire Range: 6 AWG - 350 kcmil
  • Load Side Wire Range: 6 AWG - 350 kcmil
  • Number Of Jaws: 4 Terminal
  • Phase: 1 Phase
  • Product Height: 25.938 IN
  • Product Length: 5.188 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Standard: UL Listed;Type 3R
  • Terminal: Lay in
  • Unspsc Number: 39121102
  • Voltage Rating: Up to 240 Volts Alternating Current
  • Width: 9 IN

Professional Applications

  • Temporary Power Distribution for Construction Sites
  • Event and Festival Power Metering
  • Emergency Power Installations
  • Portable Generator Connections
  • Maintenance and Service Applications
  • Outdoor Equipment Power Monitoring
  • Utility Temporary Service Connections

Why Choose Milbank Quality?

Milbank delivers proven reliability with UL Listed safety certification and Type 3R weatherproof protection. The robust G90 galvanized steel construction with powder coat finish ensures dependable performance in demanding temporary power applications, backed by professional-grade materials and manufacturing standards.

Manufacturer Resources

Product Specs

Application:
Temporary Power
Brand Name:
Milbank
Cable Entry:
Underground
Frequency Rating:
60 Hertz
Insulation:
Glass Polyester
Line Side Wire Range:
6 AWG - 350 kcmil
Load Side Wire Range:
6 AWG - 350 kcmil
Number Of Jaws:
4 Terminal
Phase:
1 Phase
Product Height:
25.938 IN
Product Length:
5.188 IN
Standards:
UL Listed;Type 3R
Terminal:
Lay in
Unspsc Number:
39121102
Voltage Rating:
Up to 240 Volts Alternating Current
Product Material:
G90 Galvanized Steel with Powder Coat Finish
Product Mounting:
Surface Mount
Product Width:
9 IN
Department:
Electrical
Product Subgroup:
Electrical
Insulation Type:
Glass Polyester
Installation Category:
Surface Mount
Terminal Type:
Lay In
Number of Phases:
1
Frequency:
60 hertz
Number of Terminations:
4
Product Type:
Enclosure
Product Group:
Metering & Service Entrance

Milbank U4908-O-38GBGR – Frequently Asked Questions

1) What conductor sizes will the lay-in lugs on this Milbank meter socket take?
Both line and load sides accept 6 AWG through 350 kcmil, so 4/0 aluminum SER or a 250 kcmil service entrance run both land without adapters. The terminals are lay-in type, meaning you drop the conductor into the lug rather than threading it through a closed barrel, which makes stiff large-gauge service cable much easier to dress in the can.
2) Ringless or ring type Milbank socket - which one do I order?
That is the utility's call, not yours. The U4908 is the ringless version (the cover locks to the can with a sealing wire, no separate retaining ring) and the U4909 is the ring type. Both are offered here in the same 4 terminal 240V body. Call the serving utility or check their meter spec sheet before you buy, because they will refuse to set a meter in the wrong style.
3) Can I get this Milbank socket with a main breaker already in it?
Yes. Two of the configurations come with a 100A main breaker factory installed: the ringless no-bypass U4908-O-100MB-11GR and the ringless horn-bypass U4908-O-100MB-KK-11GR. The rest ship as socket only with no breaker, so if you need overcurrent protection at the meter you have to pick one of the 100MB versions or feed a separate disconnect downstream.
4) What does the horn bypass option on the U4908 do, and do I need it?
Horn bypass lets the utility pull the meter without dropping power to the load, which many utilities require on services they expect to service live. The KK suffix marks it: U4908-O-KK-11GR is horn bypass with no breaker, and U4908-O-100MB-KK-11GR is horn bypass with the 100A main. The plain U4908-O-100MB-11GR and the GB versions have no bypass. If your utility does not call for bypass, the no-bypass can is the simpler unit.
5) Can this Milbank meter socket be mounted outdoors on a pole or temp power stand?
It is built for it. Type 3R construction sheds rain, sleet and ice, the shell is G90 galvanized steel with a powder coat finish, and the whole unit is UL Listed. It is a surface mount can, so it bolts flat to a wall, a 4x4 temp pole backer, or a plywood service board. Cable entry is designed for underground feed rather than overhead.
6) How much wall space does the Milbank U4908 socket need?
Plan on roughly 26 by 9 inches of flat mounting surface. The published dimensions are 25.938 inches high, 9 inches wide and 5.188 inches deep, so allow for the depth clearance off the wall plus working space in front of the meter per code.
7) Is this Milbank socket suitable for an overhead service drop?
No. This one is configured for underground cable entry, so it is meant for a lateral coming up into the can from below. For an overhead drop you want a socket with a hub or hub opening at the top rated for the weatherhead feed, not this version.
8) What is the difference between the 520GR, 620GB and 1450GB versions of this Milbank socket?
Those are the barrel or jaw assembly designations that follow the catalog number, and they vary with the ring style and bypass setup. Ringless no-bypass is offered as 520GR (U4908-O-100MB-11GR), 620GB (U4908-O-38GBGR) and 1450GB (U4908-O-55GBGR); ring type comes as 520GR (U4909-O-11GR) and 1450GB (U4909-O-55GBGR). Utilities frequently approve one specific assembly, so match the suffix on their approved equipment list.
9) Will this hold up on a construction site or festival temp power setup?
That is the application it is built around. Temporary power is the stated use: galvanized steel with powder coat for corrosion resistance, Type 3R for weather exposure, and glass polyester insulation behind the jaws. For a jobsite temp service the 100A main breaker versions give you a disconnect and overcurrent device in the same can, which is usually what the inspector expects on a temp pole.
How fast can I get the Milbank U4908-O-38GBGR 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 U4908-O-38GBGR come with a warranty?
Absolutely. The Milbank U4908-O-38GBGR 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 U4908-O-38GBGR?
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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