Eaton Series C K-Frame Circuit...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,000.00
$151.97
Eaton C K-Frame Molded Case Circuit Breaker Accessory Cu/Al Extra Large 500-750

Eaton Series C K-Frame Circuit Breaker Terminal Accessory 400A Cu/Al 500-750 kcmil

(No reviews yet) Write a Review

Model: 4TA402K

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

$1,000.00
$151.97
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 Series C K-Frame Circuit Breaker Terminal Accessory 400A Cu/Al 500-750 kcmil

Professional Terminal Accessory for Enhanced Circuit Protection Systems

The Eaton Series C K-Frame Circuit Breaker Terminal Accessory delivers reliable electrical connections for 400A circuit protection applications. This UL Listed terminal accessory features pressure type line and load connections designed for copper and aluminum conductors ranging from 500-750 kcmil, ensuring secure and professional installations in commercial and industrial electrical systems.

Professional Features & Benefits

  • 400A Rating: Handles high-amperage applications with reliable current capacity for demanding electrical systems.
  • Cu/Al Compatibility: Accepts both copper and aluminum conductors for flexible installation options and cost-effective wiring solutions.
  • 500-750 kcmil Wire Range: Accommodates extra large conductor sizes for high-capacity electrical distribution systems.
  • Pressure Type Connections: Provides secure line and load terminations that maintain consistent contact pressure over time.
  • UL Listed Certification: Meets rigorous safety and performance standards for code-compliant installations.
  • Series C Design: Engineered for compatibility with Eaton Series C molded case circuit breakers for system integration.
  • K-Frame Configuration: Designed specifically for Frame J-K circuit breakers ensuring proper fit and electrical performance.

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: 500-750 kcmil Cu/Al

Professional Applications

  • Commercial Building Electrical Distribution
  • Industrial Power Systems
  • Manufacturing Facility Protection
  • Data Center Power Distribution
  • Healthcare Facility Electrical Systems
  • Educational Institution Power Infrastructure
  • Municipal and Government Buildings

Why Choose Eaton Quality?

Eaton Series C terminal accessories provide dependable performance backed by UL Listed certification and engineered compatibility with Eaton circuit protection systems. The pressure type connection design ensures long-term reliability while accommodating both copper and aluminum conductors for versatile installation requirements in professional electrical applications.

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:
500-750 kcmil Cu/Al
Department:
Electrical
Product Group:
Wire Connectors & Terminals
Product Type:
Circuit Breaker
Product Subgroup:
Lugs & Terminals

Eaton 4TA402K – Frequently Asked Questions

1) What wire size does the Eaton Series C K-Frame 400A terminal kit accept?
The Eaton Series C K-Frame terminal accepts 500-750 kcmil conductors, copper or aluminum. That is a single extra-large lug per pole, so if your feeder is run as parallel smaller conductors you need a different lug arrangement. For a single 500, 600, or 750 kcmil cable per phase, this is the right range.
2) Can I land aluminum feeder on this Eaton 400A breaker terminal?
Aluminum is fine. The lugs are rated Cu/Al, so either copper or aluminum conductor in the 500-750 kcmil range can be terminated. Use the appropriate antioxidant compound and torque value for aluminum per your installation practice.
3) Do I order this terminal kit by number of poles?
Yes, pole count is the ordering decision. Three kits are offered: 2TA402K for two-pole, 3TA402K for three-pole, and 4TA402K for four-pole breakers. Match the kit to the pole count of the breaker you're landing conductors on.
4) Does one kit cover both the line and load side of the breaker?
The terminals are pressure type for both line and load connections, so the kit covers terminations at each end of the breaker rather than one side only.
5) Is this a circuit breaker or just the lugs?
It's the terminal accessory only, not a breaker. You get the pressure type line and load terminals that mount to an Eaton Series C K-Frame breaker. The breaker itself is ordered separately.
6) My K-Frame breaker is 250A. Can I still use the 400A terminal kit?
No. This kit is the 400A version and its lugs are sized for 500-750 kcmil conductors, which is far larger than a 250A feeder would use. Order the terminal kit matched to your breaker's amp rating so the lug range matches the conductor you're actually pulling.
How fast can I get the Eaton 4TA402K 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 4TA402K come with a warranty?
Absolutely. The Eaton 4TA402K 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 4TA402K?
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 4TA402K 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.
!