Milbank Copper Fifth Terminal ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$34.19
Milbank Copper Fifth Terminal Kits - Bolt-In and Plug-In Mount Options, 600V AC

Milbank Copper Fifth Terminal Kit with Bolt-In and Plug-In Mount Options - 600V AC Metering Accessory

(No reviews yet) Write a Review

Model: K3866

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

$34.19
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Milbank Copper Fifth Terminal Kit with Bolt-In and Plug-In Mount Options - 600V AC Metering Accessory

Professional Metering Accessory for Versatile Installation Applications

The Milbank Copper Fifth Terminal Kit delivers reliable metering connectivity with 600V AC rating and flexible mounting options. This professional-grade copper construction accessory provides both bolt-in and plug-in mount configurations for versatile installation requirements in electrical metering applications.

Professional Features & Benefits

  • 600V AC Rating: Provides reliable voltage handling capacity for demanding electrical metering applications with professional-grade performance standards.
  • Copper Construction: Delivers superior conductivity and corrosion resistance for long-term reliability in electrical connections and metering installations.
  • Dual Mount Options: Offers both bolt-in and plug-in mounting configurations to accommodate diverse installation requirements and existing infrastructure.
  • Fifth Terminal Design: Enables proper metering connections with dedicated terminal functionality for accurate electrical measurement and monitoring.
  • Metering Accessory Application: Specifically engineered for electrical metering systems to ensure proper connectivity and measurement accuracy.
  • Professional Grade Materials: Constructed with quality copper materials to meet demanding electrical standards and provide lasting performance.

Technical Specifications

  • Application: Metering Accessory
  • Brand Name: Milbank
  • Departent: Electrical
  • Product Family Code: MSMC
  • Product Material: Copper
  • Product Type: Fifth Terminal Kit
  • Unspsc Number: 39121432
  • Voltage Rating: 600 Volts Alternating Current

Professional Applications

  • Electrical Metering Systems
  • Commercial Facilities
  • Industrial Installations
  • Multi-Unit Properties
  • Professional Offices
  • Utility Metering Applications
  • Electrical Service Upgrades

Why Choose Milbank Quality?

Milbank delivers professional-grade electrical components with reliable copper construction and versatile mounting options. The 600V AC rating and dual mount configurations ensure dependable performance in demanding metering applications with lasting durability.

Manufacturer Resources

Product Specs

Application:
Metering Accessory
Brand Name:
Milbank
Product Family Code:
MSMC
Product Type:
Fifth Terminal Kit
Unspsc Number:
39121432
Voltage Rating:
600 Volts Alternating Current
Product Material:
Copper
Department:
Electrical
Product Subgroup:
Electrical
Product Details:
Fifth Terminal Kit

Milbank K3866 – Frequently Asked Questions

1) What is a fifth terminal kit for on a Milbank meter socket?
A fifth terminal kit adds the extra terminal a meter socket needs for a neutral connection in metering applications. The Milbank copper kits are metering accessories rated 600 volts AC, and they come in three configurations: a medium and heavy duty version with neutral wire (K3865), a Z bracket bolt-in version (K3866), and a plug-in version for the 3 and 9 o'clock positions (K5T). Which one you order depends on how the socket accepts the terminal, not on the meter itself.
2) Should I order the bolt-in or the plug-in fifth terminal kit?
Bolt-in versus plug-in is decided by the socket, not by preference. The Milbank K3866 uses a Z bracket and bolts in, so it suits sockets prepped with a mounting point for the bracket. The K5T is a plug-in that seats at the 3 and 9 o'clock positions in the socket jaw ring. Both carry the same 600V AC rating. Look at the socket interior before ordering: if there is no bolt provision, the plug-in is the one that installs.
3) Which Milbank fifth terminal kit do I need for a heavy duty meter socket with a neutral wire?
That is the K3865, the medium and heavy duty metering version supplied with neutral wire. The other two options (the K3866 Z bracket and the K5T plug-in) are terminal mounting styles without that heavy duty neutral wire designation. All three are rated 600V AC.
4) Can I use a Milbank fifth terminal kit on a 480V three phase service?
Yes. The kits are rated 600 volts AC, which covers 120/240V single phase, 208Y/120, and 480V class services in commercial and industrial metering. Above 600V they do not apply.
5) Do I still need the fifth terminal if the utility requires a neutral at the meter?
If the utility requires a neutral sensed at the socket and the socket was built as a four jaw, a fifth terminal kit is the accessory that adds it rather than replacing the socket. The Milbank kits handle this at up to 600V AC, in bolt-in (K3866) or plug-in (K5T) form, with the K3865 covering medium and heavy duty metering with neutral wire. Confirm with the serving utility which configuration they will accept before the meter is set, since utilities dictate socket configuration.
6) Are the Milbank fifth terminal kits copper?
Copper, yes. The current-carrying terminal is copper construction, which is what you want for conductivity and corrosion resistance at a metering connection that will see load for years. If your specification calls for a copper terminal rather than plated steel, these meet it.
How fast can I get the Milbank K3866 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 K3866 come with a warranty?
Absolutely. The Milbank K3866 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 K3866?
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 K3866 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!