Milbank 320A 1-Phase Ringless ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$761.18
Milbank U3949-X-HSP 5 Terminal Ringless Large Closing Plate Lever Bypass Stainless Steel Hasp

Milbank 320A 1-Phase Ringless Meter Socket with Lever Bypass and Stainless Steel Hasp (2)

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Model: U3949-X-HSP

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

$761.18
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Milbank 320A 1-Phase Ringless Meter Socket with Lever Bypass and Stainless Steel Hasp

Professional meter socket solution with integrated bypass capability

The Milbank 320A 1-Phase Ringless Meter Socket delivers reliable electrical metering with integrated lever bypass functionality and stainless steel hasp security. This surface-mount meter socket features G90 galvanized steel construction with powder coat finish, 5-terminal ringless design, and Type 3R enclosure rating for dependable outdoor service in residential and commercial applications.

Professional Features & Benefits

  • 320 Continuous Ampere Rating: Handles substantial electrical loads for residential and light commercial applications with reliable current capacity.
  • Lever Bypass Provision: Enables safe meter maintenance and replacement without service interruption through integrated bypass mechanism.
  • Type 3R Enclosure Rating: Provides weather-resistant protection against rain, sleet, and ice formation for reliable outdoor installation.
  • G90 Galvanized Steel Construction: Delivers superior corrosion resistance and structural durability with professional powder coat finish.
  • 5-Terminal Ringless Design: Simplifies installation with secure electrical connections and eliminates need for meter rings.
  • UL Listed Certification: Ensures compliance with safety standards and code requirements for professional electrical installations.
  • Stainless Steel Hasp: Provides tamper-resistant security and long-lasting corrosion protection for meter access control.

Technical Specifications

  • Amperage Rating: 320 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Bypass Provision: Lever Bypass
  • Cable Entry: Overhead
  • Departent: Electrical
  • Equipment Ground: Ground Lug
  • Frequency Rating: 60 Hertz
  • Hub Closing Plate: Large Closing Plate
  • Insulation: Glass Polyester
  • Main Breaker Size: No Main Breaker
  • Number Of Jaws: 5 Terminal
  • Number Of Main Breakers: 0
  • Number Of Meter Positions: 1 Position
  • Number Of Receptacles: 0
  • Phase: 1 Phase
  • Product Family Code: 5T32
  • Product Height: 28.25 IN
  • Product Length: 6 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Size: 6L x 13W x28.25H
  • 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: 13 IN

Professional Applications

  • Residential electrical service installations requiring 320A capacity
  • Commercial buildings and small industrial facilities
  • Multi-unit residential properties and apartment complexes
  • Retail establishments and professional offices
  • Service upgrades and electrical modernization projects
  • Utility metering applications requiring bypass capability

Why Choose Milbank Quality?

Milbank delivers proven reliability through UL Listed certification, Type 3R weather protection, and robust G90 galvanized steel construction with powder coat finish. The integrated lever bypass system and stainless steel hasp provide professional-grade functionality and security for demanding electrical service applications.

Manufacturer Resources

Product Specs

Amperage Rating:
320 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Bypass Provision:
Lever Bypass
Cable Entry:
Overhead
Equipment Ground:
Ground Lug
Frequency Rating:
60 Hertz
Hub Closing Plate:
Large Closing Plate
Insulation:
Glass Polyester
Main Breaker Size:
No Main Breaker
Number Of Jaws:
5 Terminal
Number Of Main Breakers:
0
Number Of Meter Positions:
1 Position
Number Of Receptacles:
0
Phase:
1 Phase
Product Family Code:
5T32
Product Height:
28.25 IN
Product Length:
6 IN
Product Size:
6L x 13W x28.25H
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:
320
Product Width:
13 IN
Department:
Electrical
Product Subgroup:
Metering & Meter Sockets
Product Group:
Power Distribution

Milbank U3949-X-HSP – Frequently Asked Questions

1) Does the Milbank U3949-X-HSP 320A meter socket include a main breaker or disconnect?
No. The U3949-X-HSP is a meter-socket-only enclosure: no main breaker, no receptacles, and one meter position. If the utility or the AHJ wants a service disconnect at the meter, you need a separate main breaker enclosure or a meter-main combination instead of this socket.
2) Is this Milbank 320A socket for overhead service or underground lateral?
It is built for overhead cable entry and ships with a large hub closing plate on top, so you can knock the plate out and fit a hub for the service mast. For an underground lateral you want a socket configured for bottom feed rather than this one.
3) Will a 5-jaw ringless socket work on a single-phase 120/240V residential service?
Yes. The U3949-X-HSP is a 5-terminal, single-phase, 60 Hz socket rated 600 VAC, which covers standard 120/240V single-phase residential and light commercial service. The fifth jaw is the neutral/ground terminal many utilities require. Confirm your utility accepts ringless before ordering, since some require ring-type.
4) Can the meter be pulled on this Milbank socket without killing power to the building?
That is what the lever bypass is for. Rotating the bypass lever shunts current around the meter socket jaws so the utility or electrician can pull and replace the meter while the service stays energized. Without a bypass you would have to drop the service to change the meter.
5) Can this Milbank meter socket be mounted outdoors?
Yes, it is a Type 3R enclosure, which is the outdoor rating for rain, sleet and ice on service equipment, and it is UL Listed. The body is G90 galvanized steel with a powder coat finish and the hasp is stainless steel, so the locking point does not rust out first.
6) What size opening do I need on the wall for a Milbank 320A ringless meter socket?
The enclosure measures 6 inches deep by 13 inches wide by 28.25 inches high and is surface mounted, so lay out the backing and fasteners for a 13 by 28.25 inch footprint with 6 inches of projection off the wall. Allow working clearance in front per code for your jurisdiction.
7) What lug or terminal does the 320A socket use for the service conductors?
Line and load connections land on 3/8 inch studs rather than screw-type lugs, so plan on ring-terminal or stud-type mechanical connectors sized for your 320A conductors. Equipment grounding is handled by a factory ground lug in the enclosure.
8) What is the exact part number to order this Milbank socket for a utility submittal?
Order it as Milbank U3949-X-HSP. On a utility approval sheet it falls under Milbank's 5T32 product family code, and the UNSPSC for procurement systems is 39121102. The -HSP suffix denotes the stainless steel hasp version.
9) Do I need a separate meter ring with this socket?
No ring is needed. Ringless construction means the cover itself secures over the meter, so the utility seals the cover at the hasp instead of sealing a ring. The insulating barrier material behind the jaws is glass polyester.
How fast can I get the Milbank U3949-X-HSP 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 U3949-X-HSP come with a warranty?
Absolutely. The Milbank U3949-X-HSP 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 U3949-X-HSP?
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 U3949-X-HSP from ZenSupply?
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