Milbank 200A 3-Phase 7 Termina...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$671.24
Milbank U7421–U7423 7 Terminal Ringless Meter Socket - Lever Bypass, Medium Duty, 200A 3-Phase Configurations

Milbank 200A 3-Phase 7 Terminal Ringless Meter Socket with Lever Bypass - Medium Duty Surface Mount

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Model: U7421-RRL

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

$671.24
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Milbank 200A 3-Phase 7 Terminal Ringless Meter Socket with Lever Bypass - Medium Duty Surface Mount

Professional electrical metering solution for commercial and industrial applications

The Milbank 200A 3-Phase 7 Terminal Ringless Meter Socket delivers reliable electrical metering with lever bypass functionality for commercial and industrial installations. Featuring robust G90 galvanized steel construction with powder coat finish and Type 3R rating, this medium duty surface mount meter socket provides professional-grade performance with 600V AC rating and UL Listed certification for demanding electrical service applications.

Professional Features & Benefits

  • 200 Continuous Ampere Rating: Handles substantial electrical loads for commercial and industrial metering applications with reliable current capacity.
  • 3-Phase Configuration: Supports three-phase electrical systems commonly required in commercial facilities and industrial operations.
  • 7 Terminal Ringless Design: Provides comprehensive connection points with modern ringless technology for secure electrical connections.
  • Lever Bypass Functionality: Enables safe meter removal and maintenance without interrupting electrical service to connected loads.
  • Type 3R Enclosure Rating: Weather-resistant construction suitable for outdoor installations with protection against rain and ice formation.
  • G90 Galvanized Steel Construction: Durable material with powder coat finish ensures long-term corrosion resistance and structural integrity.
  • UL Listed Certification: Meets rigorous safety standards for professional electrical installations and code compliance.

Technical Specifications

  • Amperage Rating: 200 Continuous Ampere
  • Application: Meter Socket
  • Brand Name: Milbank
  • Departent: Electrical
  • Equipment Ground: Ground Lug
  • 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: 7 Terminal
  • Number Of Main Breakers: 0
  • Number Of Meter Positions: 1 Position
  • Number Of Receptacles: 0
  • Phase: 3 Phase
  • Product Family Code: MD7T
  • Product Length: 4.844 IN
  • Product Material: G90 Galvanized Steel with Powder Coat Finish
  • Product Mounting: Surface Mount
  • Product Type: Ringless Meter Socket
  • Standard: UL Listed;Type 3R
  • Terminal: Lay in
  • Unspsc Number: 39121102
  • Voltage Rating: 600 Volts Alternating Current

Professional Applications

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

Why Choose Milbank Quality?

Milbank delivers proven reliability with UL Listed certification and Type 3R weather-resistant construction. The robust G90 galvanized steel with powder coat finish ensures long-term durability, while the comprehensive 7 terminal configuration and lever bypass functionality provide professional-grade performance for demanding electrical metering applications.

Manufacturer Resources

Product Specs

Amperage Rating:
200 Continuous Ampere
Application:
Meter Socket
Brand Name:
Milbank
Equipment Ground:
Ground Lug
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:
7 Terminal
Number Of Main Breakers:
0
Number Of Meter Positions:
1 Position
Number Of Receptacles:
0
Phase:
3 Phase
Product Family Code:
MD7T
Product Length:
4.844 IN
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
Department:
Electrical
Product Subgroup:
Metering & Meter Sockets
Insulation Type:
Glass Polyester
Installation Category:
Surface Mount
Terminal Type:
Lay In
Number of Phases:
3
Frequency:
60 hertz
Product Details:
Ringless Meter Socket
Number of Terminations:
7
Product Group:
Power Distribution

Milbank U7421-RRL – Frequently Asked Questions

1) Will a 7 terminal meter socket work for a 120/208V three phase four wire service?
The Milbank U7421 series is a 7 jaw, 3 phase socket rated 600V AC and 60 Hz, which is the jaw configuration utilities specify for 3 phase 4 wire network metering. It is a single meter position socket. If your service is single phase, you need a 4 jaw socket instead, not this one.
2) What wire size can I land in this 200A Milbank ringless socket?
Both line and load terminals take 6 AWG through 350 kcmil, and they are lay in type lugs, so you drop the conductor in rather than threading it through a closed barrel. That range covers typical 200A copper and aluminum service conductors. There is a ground lug for the equipment grounding conductor.
3) Which hub option do I order for an overhead service drop versus an underground lateral?
Hub choice is the main ordering decision. For overhead, order a large hub open version: U7421-RRL (adapts to small hub open) or U7421-RXL (adapts to small closing plate). U7421-RL comes with a small hub open. For underground feed where nothing enters the top, U7423-XL ships with a small closing plate so the top opening is sealed. Pick the hub opening that matches the conduit size your utility requires.
4) What is the difference between the U7421, U7422 and U7423 Milbank sockets?
They differ by bypass. U7421-RL, U7421-RRL and U7421-RXL are the lever bypass versions, which let a utility pull the meter without interrupting power to the load. U7422-RRL and U7422-RXL are the no bypass versions. U7423-RXL and U7423-XL are the other 200A 3-phase configurations in the same medium duty MD7T family. Electrical specs otherwise match: 200A continuous, 600V AC, 7 terminal, one meter position.
5) Can this Milbank ringless meter socket be mounted outdoors on an exterior wall?
Yes. It is a Type 3R enclosure, rain and ice resistant, built from G90 galvanized steel with a powder coat finish, and it is a surface mount unit that fastens flat to the wall or a backboard rather than recessing into it. The socket is UL Listed.
6) Will a ringless socket accept the meter my utility supplies, or do I need a ring type?
Ringless sockets use a hinged or lift off cover that retains the meter, with no separate sealing ring. Most utilities now specify ringless, but it is utility specific and not interchangeable with a ring type cover. Confirm with your utility which style they accept before ordering the U7421 series.
7) Is the lever bypass worth it on a multi-tenant commercial service?
On any service where you cannot afford an outage to swap or test a meter, yes. The lever bypass shunts current around the meter so it can be removed with the load still energized, which is why utilities often require it on commercial and multi-tenant buildings. If the utility does not require it, the U7422-RRL or U7422-RXL no bypass versions cover the same 200A 3 phase, 7 terminal duty.
8) How deep does this Milbank socket stand off the wall?
The product length is listed at 4.844 inches. Factor that plus conduit bend radius when you lay out the service on the wall, since the lay in terminals need room to dress 350 kcmil conductors.
9) What insulates the jaws in this meter socket?
The jaw assembly is mounted on glass polyester insulation, which holds up to the heat and tracking exposure of a 600V, 200A continuous service better than thermoplastic bases. Combined with the Type 3R galvanized enclosure, it is built for outdoor commercial service entrances.
How fast can I get the Milbank U7421-RRL 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 U7421-RRL come with a warranty?
Absolutely. The Milbank U7421-RRL 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 U7421-RRL?
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 U7421-RRL from ZenSupply?
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