Eaton Series C 400A Molded Cas...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,000.00
$147.66
Eaton C K-Frame Molded Case Circuit Breaker Accessory Cu/Al Larger Concuctors 2/0-500

Eaton Series C 400A Molded Case Circuit Breaker Terminal Accessory with Cu/Al Conductors

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Model: 4TA401K

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

$1,000.00
$147.66
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Eaton Series C 400A Molded Case Circuit Breaker Terminal Accessory with Cu/Al Conductors

Professional Terminal Accessory for Enhanced Electrical Connections

The Eaton Series C 400A Molded Case Circuit Breaker Terminal Accessory delivers reliable electrical connections for Frame J-K circuit breakers. This UL Listed terminal accessory features pressure type line and load terminals designed to accommodate larger conductors from 2/0 to 500 kcmil for both copper and aluminum applications, ensuring versatile installation options for professional electrical systems.

Professional Features & Benefits

  • 400A Rating: Provides robust current handling capacity for demanding electrical applications and high-load circuits.
  • Frame J-K Compatibility: Ensures precise fit and reliable operation with Eaton Series C molded case circuit breakers.
  • Pressure Type Terminals: Delivers secure, maintenance-free connections that maintain consistent contact pressure over time.
  • Cu/Al Conductor Support: Accommodates both copper and aluminum conductors for flexible installation and cost-effective wiring solutions.
  • Large Wire Range: Accepts conductors from 2/0 to 500 kcmil, providing versatility for various electrical system requirements.
  • UL Listed: Meets rigorous safety and performance standards for reliable operation in commercial and industrial applications.

Technical Specifications

  • Amperage Rating: 400 A
  • Certifications: UL Listed
  • Compliances: Contact Manufacturer
  • Frame Size: Frame J-K
  • Product Details: Terminal
  • Series: Series C
  • Terminals: Pressure type line and load
  • Wire Size: (1) 2/0-500 kcmil Cu/Al

Professional Applications

  • Commercial Electrical Panels
  • Industrial Power Distribution
  • Manufacturing Facilities
  • Data Centers
  • Healthcare Facilities
  • Educational Institutions
  • Municipal Buildings

Why Choose Eaton Quality?

Eaton Series C terminal accessories provide dependable performance backed by UL Listed certification and precision engineering. The pressure type terminal design ensures long-term reliability while accommodating both copper and aluminum conductors for maximum installation flexibility in professional electrical systems.

Manufacturer Resources

Product Specs

Amperage Rating:
400 A
Certifications:
UL Listed
Compliances:
Contact Manufacturer
Frame Size:
Frame J-K
Product Details:
Terminal
Series:
Series C
Terminals:
Pressure type line and load
Wire Size:
(1) 2/0-500 kcmil Cu/Al
Department:
Electrical
Product Group:
Wire Connectors & Terminals
Product Type:
Circuit Breaker
Product Subgroup:
Lugs & Terminals

Eaton 4TA401K – Frequently Asked Questions

1) Will this Eaton Series C terminal kit fit my K-Frame 400A breaker?
The Eaton Series C 400A terminal accessory is built for Frame J-K molded case breakers rated 400A. If your breaker is a J or K frame Series C at 400 amps, this is the matching terminal set. It will not serve a different frame class, so verify the frame letter stamped on the breaker before ordering.
2) What wire size do these Eaton 400A breaker terminals accept?
Each terminal takes one conductor from 2/0 through 500 kcmil, and it is rated for copper or aluminum. That is the large-conductor range, so if you are landing 500 kcmil feeders on a 400A J or K frame breaker, these are the lugs to order. One conductor per pole only, so this is not a double-lug or parallel-feeder terminal.
3) Do I need a 2-pole, 3-pole or 4-pole terminal kit for my breaker?
Match the kit to the pole count of the breaker. The 400A terminal accessory comes as 2TA401K for 2-pole, 3TA401K for 3-pole, and 4TA401K for 4-pole. A 3-pole breaker needs the 3-pole kit so every line and load position gets a lug, since the kit covers both line and load ends.
4) My Series C breaker came with smaller terminals. Can I upgrade it to take 500 kcmil?
That is exactly what this accessory is for. The kit replaces the factory terminals on a 400A Frame J-K Series C breaker with large-conductor lugs taking one 2/0 to 500 kcmil copper or aluminum conductor per pole. Order the kit matching your breaker's pole count: 2TA401K, 3TA401K, or 4TA401K.
5) Can I land aluminum feeders on these Eaton Series C terminals?
Yes, the terminals are rated Cu/Al, so aluminum or copper conductors are both acceptable in the 2/0 to 500 kcmil range. That lets you run aluminum feeders on a 400A J or K frame breaker without adding a separate transition lug.
6) Does the kit cover both the line and load side of the breaker?
Both ends. These are pressure type line and load terminals, so a single kit of the correct pole count equips the incoming and outgoing side of the breaker. You do not order line and load separately.
7) Is this Eaton terminal accessory UL Listed for use in a hospital or school panel?
The 400A Series C terminal accessory is UL Listed, which is what most institutional and commercial specs call for on breaker accessories in panels serving healthcare, education, and municipal buildings. For any additional agency compliance beyond the UL Listing, Eaton is the reference.
8) What is a pressure type terminal and why would I use it instead of a crimp lug?
A pressure type terminal clamps the bare conductor under a screw-applied pressure plate, so you strip and land the wire directly on the breaker with no crimp tool and no separate compression lug on the cable. Eaton supplies them as the line and load terminals on the 400A Series C J-K frame kit. Crimp lugs are the alternative when you need a bolted pad connection or a terminated cable assembly made up off site.
How fast can I get the Eaton 4TA401K 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 4TA401K come with a warranty?
Absolutely. The Eaton 4TA401K 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 4TA401K?
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 4TA401K from ZenSupply?
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