Eaton Old Line Fusible Plug-in...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$3,286.41
Eaton Old Line Fusible Plug-in Unit, Three-Pole, 600V/30A

Eaton Old Line Fusible Plug-in Unit, Three-Pole, 600V/30A

(No reviews yet) Write a Review

Model: TAP361

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

$3,286.41
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

Eaton Old Line Fusible Plug-in Unit, Three-Pole, 600V/30A

The Eaton Old Line Fusible Plug-in Unit is a three-pole, 600V, 30A fusible plug-in device engineered for use in Eaton switchboard and bus duct distribution systems built to the Old Line design standard. This plug-in unit provides fused overcurrent protection at the point of connection, allowing electricians to add or remove circuits from a live switchboard bus without de-energizing the entire system. The unit is NEMA compliant and certified to UL 857, ANSI, IEEE, and CSA standards, making it a dependable choice for commercial and industrial power distribution where code compliance and long-term reliability are essential.

Key Features

  • Electrical Rating: Rated 600V and 30A, providing dependable overcurrent protection for three-pole circuits in fusible switchboard applications.
  • Configuration: Three-pole construction supports balanced multi-phase power distribution across commercial and industrial branch circuits.
  • Type: Old Line fusible plug-in design, engineered for direct plug-in mounting into compatible Eaton switchboard and bus duct systems.
  • NEMA Compliant: Meets NEMA construction and performance standards, supporting safe, code-compliant electrical installations.
  • Fusible Design: Accepts fuses to deliver overcurrent protection directly at the plug-in connection point, simplifying circuit isolation and maintenance.
  • Availability: Normally available from stock for fast turnaround on maintenance, retrofit, and new-installation projects.
  • Application Note: Not intended for use with low impedance bus duct systems; verify system compatibility prior to installation.

Certifications & Compliance

  • NEMA Compliant
  • ANSI Certified
  • UL 857 Listed
  • IEEE Certified
  • CSA Certified

Technical Specifications

  • Number Of Poles: Three-pole
  • Voltage Rating: 600V
  • Amperage Rating: 30A
  • Type: Old Line
  • Notes: Not available for low impedance bus duct. Normally available from stock.

Typical Applications

  • Commercial and Industrial Power Distribution
  • Fusible Switchboard Systems
  • Panelboard and Switchgear Installations
  • Plug-In Distribution Units for Bus Duct Systems
  • Facility Maintenance and Circuit Retrofits
  • Renovation and New Construction Electrical Projects

Why Eaton?

Eaton's Old Line Fusible Plug-in Unit is backed by ANSI, UL 857, IEEE, and CSA certifications along with NEMA compliance, reflecting the rigorous quality and safety standards that professional electricians and facility engineers depend on for three-pole, 600V, 30A distribution equipment. Eaton further stands behind the product with its Selling Policy 25-000 warranty, covering the unit for one year from the date of installation or eighteen months from the date of shipment, whichever occurs first. For commercial and industrial teams that need code-compliant, dependable fusible plug-in components for switchboard and bus duct distribution, Eaton delivers the certified performance and stock availability that keeps projects moving.

Manufacturer Resources

Spec Sheet

Product Specs

Number Of Poles:
Three-pole
Voltage Rating:
600V
Amperage Rating:
30A
Product Type:
Fusible Plug-in Unit
Department:
Electrical
Configuration:
Three-Pole
Standards:
UL 857
Product Group:
Wiring Devices
Product Subgroup:
Power Distribution

Eaton TAP361 – Frequently Asked Questions

1) Will the Eaton TAP361 plug-in unit work on low impedance bus duct?
No. The TAP361 Old Line fusible plug-in unit is not available for low impedance bus duct. It plugs into Eaton switchboard and bus duct systems built to the Old Line design standard, so confirm the duct you are tapping is Old Line before ordering.
2) Are fuses included with the Eaton Old Line fusible plug-in unit?
The unit is a fusible design, meaning it accepts fuses to provide overcurrent protection right at the plug-in point. Plan on ordering the three fuses separately, sized to the load and not exceeding the 30A rating of the device.
3) Can I install a plug-in unit on a bus duct without shutting down the whole switchboard?
That is the point of a plug-in tap. The Old Line fusible plug-in unit lets an electrician add or remove a circuit from a live switchboard bus without de-energizing the entire system, so a single tenant circuit can be changed without dropping the building feeder. Standard arc-flash and PPE practice still applies to any work on energized bus.
4) What voltage and amperage is the Eaton TAP361 rated for, and how many poles?
Three-pole, 600V, 30A. That covers three-phase branch circuits taken off a fusible switchboard or bus duct run at up to 600 volts, with the fuses sized at or below 30 amps.
5) Is the Eaton TAP361 UL listed for a code inspection?
It is listed to UL 857, the standard for busways, and is also NEMA compliant with ANSI, IEEE, and CSA certification. That is the paperwork an inspector or a spec on a commercial or institutional job will normally be looking for on a bus duct plug-in unit.
6) Should I use a fusible plug-in unit or a circuit breaker plug-in for a bus duct tap?
A fusible unit like the TAP361 uses replaceable fuses for overcurrent protection at the tap, which suits facilities that stock fuses and want a simple, high interrupting device for a 30A three-phase load. A breaker-type plug-in resets instead of being replaced, which maintenance crews often prefer for nuisance trips. The deciding factor here is usually the existing duct: Old Line bus duct takes Old Line plug-in units.
7) What exact part number do I order for the Eaton 30A three-pole Old Line plug-in unit?
Eaton part number TAP361. That is the three-pole, 600V, 30A fusible Old Line plug-in unit, and it is the number to quote to match an existing tap on the same duct run.
8) Can I use the TAP361 on a 208V or 480V three-phase system?
Yes. The unit is rated up to 600V, so it covers the common commercial three-phase systems below that, including 208Y/120 and 480Y/277, as long as the tap is on Eaton Old Line bus duct or switchboard bus and the load draws 30A or less per pole.
How fast can I get the Eaton TAP361 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 Eaton TAP361 come with a warranty?
Absolutely. The Eaton TAP361 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 Eaton TAP361?
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 Eaton TAP361 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.
!