Milbank U7040 200A Ringless Me...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$129.89
Milbank U7040 Ringless Meter Socket 4 Terminal, 200A, Utility Grade with Triplex/Quadplex Ground Options

Milbank U7040 200A Ringless Meter Socket, 4-Terminal Single-Phase, G90 Galvanized Steel, Type 3R

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Model: U7040-O-TG

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

$129.89
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Milbank U7040 200A Ringless Meter Socket, 4-Terminal Single-Phase, G90 Galvanized Steel

The Milbank U7040 is a 200A ringless meter socket engineered for single-phase residential and light commercial service entrances. Constructed from G90 galvanized steel with a powder coat finish and rated Type 3R for outdoor exposure, this 4-terminal, 1-phase socket features lay-in terminals that accept 6 AWG to 350 kcmil conductors on both line and load sides. A 7/8" knockout with angle bracket provides barrel lock provision for utility compliance, and the unit is UL Listed for 600 Volts Alternating Current service. This surface-mount enclosure measures 4.125"L x 11"W x 14.563"H and includes a single meter position, making it a straightforward drop-in solution for service entrance metering upgrades and new construction.

Key Features

  • 200A Continuous Rating: Sized for standard residential and light commercial service entrance loads.
  • 4-Terminal, Single-Phase Design: Dedicated line and load terminals simplify straightforward single-phase metering with 1 meter position.
  • Durable Construction: G90 galvanized steel with a powder coat finish delivers superior corrosion resistance for long-term outdoor performance.
  • Lay-In Terminals: Accept 6 AWG to 350 kcmil conductors on both line and load sides for simplified field termination.
  • Type 3R Enclosure: Rated for rain, sleet, and ice, suitable for exposed exterior installations.
  • Barrel Lock Provision: 7/8" knockout and angle bracket included for utility meter locking compliance.
  • Surface Mount Installation: Measures 4.125"L x 11"W x 14.563"H for straightforward service entrance mounting.
  • Glass Polyester Insulation: Rated for 60 Hertz service with no main breaker and zero receptacles.

Certifications & Compliance

  • UL Listed for 600 Volts Alternating Current service
  • Type 3R Rated Enclosure

Technical Specifications

  • Amperage Rating: 200 Continuous Ampere
  • Insulation: Glass Polyester
  • Line Side Wire Range: 6 AWG - 350 kcmil
  • Load Side Wire Range: 6 AWG - 350 kcmil
  • Number Of Jaws: 4 Terminal
  • Number Of Main Breakers: 0
  • Number Of Receptacles: 0
  • Phase: 1 Phase
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Frequency Rating: 60 Hertz
  • Number Of Meter Positions: 1 Position
  • Product Size: 4.125L x 11W x 14.563H
  • Terminal Type: Lay In
  • Standards: UL Listed;Type 3R

Typical Applications

  • Residential Service Entrance Metering
  • Light Commercial Building Electrical Service
  • Multi-Unit Residential and Apartment Properties
  • Utility Company Meter Installations and Service Upgrades
  • Electrical Contractor New Construction and Retrofit Work

Why Milbank?

Milbank builds the U7040 with G90 galvanized steel and a powder coat finish for lasting corrosion resistance in outdoor service entrance applications. The Type 3R enclosure and UL Listed construction help ensure code-compliant performance for electrical contractors and utilities alike. With lay-in terminals rated for 6 AWG to 350 kcmil and a barrel lock provision built in, the U7040 delivers dependable, professional-grade metering for residential and light commercial service entrance installations across new construction and retrofit projects.

Manufacturer Resources

Product Specs

Amperage Rating:
200 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Frequency Rating:
60 Hertz
Insulation:
Glass Polyester
Line Side Wire Range:
6 AWG - 350 kcmil
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:
14.563 IN
Product Length:
4.125 IN
Product Size:
4.125L x 11W x14.563H
Product Type:
Ringless Meter Socket
Standards:
UL Listed;Type 3R
Terminal:
Lay in
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:
11 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
Product Details:
Ringless Meter Socket
Number of Terminations:
4
Product Group:
Metering & Service Entrance

Milbank U7040-O-TG – Frequently Asked Questions

1) Will the Milbank U7040 meter socket accept 4/0 aluminum service entrance cable on the line side?
Yes. The U7040 uses lay-in terminals that take 6 AWG through 350 kcmil on both the line and load sides, so 4/0 aluminum SE cable lands well inside that range on either side. Lay-in terminals also mean you drop the conductor into the lug rather than threading it through a hole, which saves time when you are working a 200A service entrance with stiff cable.
2) Can a Milbank U7040 ringless meter socket be mounted outdoors on an exterior wall?
That is what it is built for. The U7040 is a Type 3R enclosure, so it is rated for rain, sleet and ice on an exposed exterior wall, and the shell is G90 galvanized steel with a powder coat finish. It is surface mount, so it fastens to the face of the wall or a backboard rather than recessing into it.
3) Does the Milbank U7040 socket include a main breaker or disconnect?
No. The U7040 is a meter socket only, with no main breaker and one meter position. Your service disconnect and overcurrent protection have to come from a separate panel or a meter main combination unit downstream. If you need the meter and the main in one enclosure, you are looking for a meter main combo, not this socket.
4) Is a 4 terminal ringless socket like the Milbank U7040 the right one for a single phase 120/240V residential service?
Yes. Four jaws single phase is the standard configuration for a 120/240V residential or light commercial service entrance, with dedicated line and load terminals. The U7040 is rated 200 continuous amps at 600V AC, 60 Hz. If the service is three phase or requires a 5-jaw or 7-jaw socket for a network or 120/208V arrangement, this is not the socket for that opening.
5) Which Milbank U7040 do I order if my utility is PEPCO, AEP, DPL, or Rochester Gas and Electric?
There are utility specific versions. For PEPCO, the horn bypass version is U7040-RL-KK-PEP. For Delmarva Power, the small hub open horn bypass version is U7040-RL-KK-DPL. AEP has two: U7040-RL-TG-KK with small hub open, triplex ground and horn bypass, and U7040-RL-TG-KK-BLG-AEP which adds the 7/8 inch barrel lock provision. Rochester Gas and Electric takes U7040-RL-TG-KK-RGE, small hub open, triplex ground, horn bypass, wide shell. Ordering a generic version where the utility has approved a specific one is the usual reason a socket gets rejected at inspection.
6) Do I need the 2 inch hub version of the Milbank U7040 or the plain top?
That depends on how the service conductors enter the can. U7040-DL-TG comes with a 2 inch hub and wide shell, which is what you want when overhead service or conduit lands on the top of the socket and you need a rain tight entry. The plain top versions (U7040-O-TG, U7040-O-TG-KK, U7040-O-TG-HSP, U7040-O-QG-KK) have no factory hub, so you field punch or use a separate fitting. The small hub open RL versions such as U7040-RL-TG sit in between with a smaller open hub opening.
7) What is the difference between the ringless U7040 and a ring type meter socket?
A ringless socket like the U7040 uses a hinged or removable cover that the utility seals directly, instead of a sealing ring clamping the meter to the socket. Which one you can install is decided by your serving utility, not by preference, so match whatever the utility specifies for the address. The U7040 also has a 7/8 inch knockout and angle bracket for a barrel lock, which is the locking provision many utilities require on a ringless can.
8) What does horn bypass mean on a meter socket, and which U7040 versions have it?
Horn bypass lets the utility jumper line to load so the meter can be pulled without dropping power to the building. On the U7040 the horn bypass versions carry a KK in the part number: U7040-O-TG-KK (plain top, triplex ground), U7040-O-QG-KK (plain top, quadplex ground), U7040-RL-TG-KK (small hub open, triplex ground, wide shell), plus the utility approved KK versions. If the utility does not require bypass, the non KK versions such as U7040-O-TG cost you nothing in function.
9) What is the difference between triplex ground and quadplex ground on the U7040?
It is the ground and neutral landing arrangement in the can, and it needs to match the service drop you are terminating. Most of the U7040 range is triplex ground, including U7040-O-TG and U7040-RL-TG. The one quadplex ground version is U7040-O-QG-KK, plain top with horn bypass. Order the configuration the utility spec for the address calls for, since it is not a field change once the socket is on the wall.
10) Can I use one Milbank U7040 to meter two apartments?
No. The U7040 is a single position socket, one meter, one service. For a duplex or a small multi-unit building where each tenant is separately metered, you need a multi-position meter stack or one socket per unit. Where the U7040 fits multi-family work is one socket per dwelling unit on individual 200A single phase services.
11) Which U7040 version has a stainless steel hasp, and why would I want one?
U7040-O-TG-HSP is the plain top, triplex ground version with a stainless steel hasp. The hasp gives you a padlock point on the cover that will not rust out on a coastal or wash down exposure the way a plated steel hasp can. If the utility instead wants a barrel lock, the versions with BLG in the number carry the 7/8 inch knockout and angle bracket for it, and that provision is on the U7040 generally.
12) What insulation is used inside the Milbank U7040 and will it hold up in a hot attic wall or full sun?
The jaw insulation is glass polyester, rated for the socket's 600V AC service. Glass polyester is a thermoset, so it holds its dielectric strength and shape under the heat a south facing outdoor can sees in summer, which is where filled thermoplastics can creep. Combined with the G90 galvanized steel and powder coat shell, that is the reason this can be left on an exposed exterior wall.
How fast can I get the Milbank U7040-O-TG 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 U7040-O-TG come with a warranty?
Absolutely. The Milbank U7040-O-TG 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 U7040-O-TG?
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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