Milbank 400A 3-Phase Ringless ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$6,383.09
Milbank U5944-XT-181 13 Terminal Ringless 2 Large Closing Plates Test Switch Prewired 24in-34in-12in Painted Steel Single Front Lift Off Cover Hasp

Milbank 400A 3-Phase Ringless Meter Socket with Test Switch 13 Terminal G90 Galvanized Steel Surface Mount

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Model: U5944-XT-181

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

$6,383.09
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Milbank 400A 3-Phase Ringless Meter Socket with Test Switch

Professional metering solution with integrated test switch capability

The Milbank 400A 3-Phase Ringless Meter Socket delivers reliable electrical metering and testing functionality for commercial and industrial applications. Featuring 400 continuous ampere rating with 600V AC capacity, this surface-mount unit combines G90 galvanized steel construction with powder coat finish for superior durability. The 13 terminal configuration with double mechanical terminals and twin large closing plates provides secure connections, while the integrated test switch enables safe meter testing and maintenance operations.

Professional Features & Benefits

  • 400 Continuous Ampere Rating: Handles high-capacity electrical loads for demanding commercial and industrial applications with reliable performance.
  • 3-Phase 600V AC Configuration: Supports three-phase power systems up to 600 volts for versatile electrical distribution requirements.
  • G90 Galvanized Steel with Powder Coat: Provides exceptional corrosion resistance and long-lasting durability in various environmental conditions.
  • 13 Terminal Ringless Design: Eliminates the need for terminal rings while ensuring secure electrical connections through double mechanical terminals.
  • Integrated Test Switch: Enables safe meter testing and maintenance without interrupting service or requiring additional equipment.
  • Type 3R Enclosure Rating: Offers protection against rain, sleet, and ice formation for reliable outdoor installation performance.
  • UL Listed Certification: Meets rigorous safety and performance standards for professional electrical installations.

Technical Specifications

  • Amperage Rating: 400 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Bypass Provision: No Bypass
  • Cable Entry: Overhead or Underground
  • Departent: Electrical
  • Equipment Ground: Ground Lug
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Twin Large Closing Plates
  • Insulation: Glass Polyester
  • Main Breaker Size: No Main Breaker
  • Number Of Jaws: 13 Terminal
  • Number Of Main Breakers: 0
  • Number Of Meter Positions: 1 Position
  • Number Of Receptacles: 0
  • Phase: 3 Phase
  • Product Family Code: TRNS
  • Product Height: 34 IN
  • Product Length: 12 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 12L x 24W x34H
  • Product Type: Ringless Meter Socket
  • Standard: UL Listed;Type 3R
  • Terminal: Double Mechanical
  • Unspsc Number: 39121102
  • Voltage Rating: 600 Volts Alternating Current
  • Width: 24 IN

Professional Applications

  • Commercial Building Electrical Distribution
  • Industrial Facility Power Metering
  • Multi-Tenant Properties
  • Manufacturing Plants
  • Retail and Office Buildings
  • Warehouse and Distribution Centers
  • Municipal and Government Facilities

Why Choose Milbank Quality?

Milbank delivers proven reliability through UL Listed certification and Type 3R enclosure protection, ensuring dependable performance in demanding electrical applications. The G90 galvanized steel construction with powder coat finish provides long-term durability and corrosion resistance for professional installations requiring consistent metering accuracy and operational safety.

Manufacturer Resources

Product Specs

Amperage Rating:
400 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
No Bypass
Cable Entry:
Overhead or Underground
Equipment Ground:
Ground Lug
Frequency Rating:
60 Hertz
Hub Closing Plate:
Twin Large Closing Plates
Insulation:
Glass Polyester
Main Breaker Size:
No Main Breaker
Number Of Jaws:
13 Terminal
Number Of Main Breakers:
0
Number Of Meter Positions:
1 Position
Number Of Receptacles:
0
Phase:
3 Phase
Product Family Code:
TRNS
Product Height:
34 IN
Product Length:
12 IN
Product Size:
12L x 24W x34H
Product Type:
Ringless Meter Socket
Standards:
UL Listed;Type 3R
Terminal:
Double Mechanical
Unspsc Number:
39121102
Voltage Rating:
600 Volts Alternating Current
Product Material:
G90 Galvanized Steel with Powder Coat Finish
Product Mounting:
Surface Mount
Amps:
400
Product Width:
24 IN
Department:
Electrical
Product Subgroup:
Metering & Meter Sockets
Product Group:
Power Distribution

Milbank U5944-XT-181 – Frequently Asked Questions

1) Will the Milbank U5944-XT-181 meter socket work on a 3-phase 4-wire 277/480V service?
The U5944-XT-181 is rated 600 volts AC, 3 phase, 60 Hz, so a 277/480V wye service is within its voltage rating. It carries 13 jaws, which is the configuration used for 3-phase 4-wire metering with the extra neutral/current terminal. Continuous rating is 400 amps.
2) Does this 400A Milbank meter socket include a main breaker or a bypass?
No on both counts. The U5944-XT-181 is listed as no main breaker, zero main breakers, and no bypass provision. Overcurrent protection has to come from separate gear downstream or upstream, and if your utility requires a lever or horn bypass for hot meter changes, this socket will not satisfy that. What it does have instead is an integrated test switch for meter testing.
3) Can this Milbank ringless meter socket be mounted outdoors?
Yes. The enclosure is UL Listed and rated Type 3R, which covers rain, sleet and ice on outdoor walls. The shell is G90 galvanized steel with a powder coat finish, and it is surface mount, so it bolts to a wall or a strut rack rather than recessing into one.
4) Can I feed this meter socket from underground, or does it have to be an overhead service?
Either works. Cable entry is rated for overhead or underground on the U5944-XT-181, and it ships with twin large hub closing plates so you can punch and fit a hub for a weatherhead drop or leave the plates in place and enter from the bottom for underground.
5) What wall space do I need to allow for the Milbank U5944-XT-181?
Plan on 24 inches wide, 34 inches high and 12 inches deep. That 12 inch depth is worth checking against your working clearance and any adjacent gear, since it is a deeper can than a typical residential socket.
6) What kind of lugs are in this 400 amp Milbank socket, and is there a ground provision?
Line and load connections are double mechanical terminals, and an equipment ground lug is provided in the can. Jaw insulation is glass polyester. Sizing your conductors for a 400 amp continuous load is the deciding factor on whether your cable will land in those lugs.
7) Is a ringless meter socket the right choice, or do I need a ring-type can?
That call belongs to your serving utility, not the spec. Ringless sockets like the U5944-XT-181 use a lift-off front cover secured by the utility seal instead of a sealing ring around the meter. Many utilities in the US specify ringless for commercial services; others still require ring type. Confirm the utility's approved meter equipment list before you set the can, because a rejected socket means pulling it off the wall.
8) What does the test switch on the Milbank U5944-XT-181 actually do for me?
It lets a technician short the CT secondaries and open the potential circuits so the meter can be tested or swapped without dropping the load. On a 400 amp 3-phase service with no bypass in the can, that switch is how you service the meter safely, which is why this version exists alongside plain sockets.
9) What is the exact part number to order this Milbank 400A test switch socket?
Milbank U5944-XT-181. That is the 13 terminal ringless, test switch, twin large closing plate version rated 400A continuous at 600V AC. If you are matching gear already on the building, the number on the existing can is the one to verify against, since Milbank's U59xx family varies by jaw count and bypass type.
How fast can I get the Milbank U5944-XT-181 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 U5944-XT-181 come with a warranty?
Absolutely. The Milbank U5944-XT-181 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 U5944-XT-181?
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 U5944-XT-181 from ZenSupply?
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