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Eaton Series C K-Frame Circuit Breaker Terminal Accessory 400A Cu/Al 500-750 kcmil
Model: EAT-2TA402K
Eaton Series C K-Frame Circuit Breaker Terminal Accessory 400A Cu/Al 500-750 kcmilProfessional Terminal Accessory for Enhanced Circuit Protection SystemsThe Eaton Series C K-Frame Circuit Breaker...
Eaton
$211.21
Eaton Series C K-Frame Mining Circuit Breaker 400A 3-Pole with Interchangeable Rating Plug
Professional Mining-Grade Circuit Protection with Adjustable Rating Technology
The Eaton Series C K-Frame Mining Circuit Breaker delivers robust 400A three-pole circuit protection designed specifically for demanding mining applications. This specialty frame-only unit features interchangeable thermal-magnetic trip technology with adjustable rating plugs (70, 90, 100, 125A) and independently adjustable short time pick-up delay for precise load management. Built with UL Listed quality and 35 kAIC interrupt rating at 480 Vac, this breaker provides reliable protection in harsh industrial environments up to 1000Y/577V maximum voltage.
Professional Features & Benefits
- 400A Amperage Rating: Handles high-capacity electrical loads with reliable overcurrent protection for critical mining operations.
- K-Frame Mining Design: Specialty frame construction engineered for the demanding conditions and vibration resistance required in mining applications.
- Interchangeable Rating Plug System: Adjustable 70, 90, 100, 125A rating plugs provide flexible protection settings without breaker replacement.
- 35 kAIC Interrupt Rating: High fault current interruption capability at 480 Vac ensures safe system protection during electrical faults.
- Independently Adjustable Short Time Delay: 125A two- and three-pole pick-up with delay settings enable precise coordination with downstream protective devices.
- UL Listed Certification: Meets rigorous safety and performance standards for commercial and industrial electrical installations.
- 1000Y/577V Maximum Voltage: Compatible with high-voltage systems commonly found in mining and heavy industrial applications.
Technical Specifications
- Amperage Rating: 400 A
- Auxiliary Switch: 1A-1B right pigtail rear
- Certifications: UL Listed
- Frame Size: K-frame
- Interrupt Rating: 35 kAIC at 480 Vac
- Number Of Poles: Three-pole
- Pick Up Delay: 125A two- and three-pole independently adjustable short time
- Product Details: Specialty frame only
- Product Height: 13 in
- Product Length Depth: 7 in
- Product Width: 11 in
- Rating Plug: 70, 90, 100, 125A adjustable interchangeable
- Series: Series C
- Terminals: T300K line, load English end cap
- Trip Type: Interchangeable thermal-magnetic
- Voltage Max: 1000Y/577V
Professional Applications
- Mining Operations and Processing Facilities
- Heavy Industrial Manufacturing Plants
- Large Motor Control Centers
- High-Voltage Distribution Systems
- Critical Infrastructure Protection
- Commercial Mining Equipment
- Industrial Power Distribution Panels
Why Choose Eaton Quality?
Eaton Series C circuit breakers represent proven reliability in demanding industrial environments. With UL Listed certification, robust K-frame construction, and interchangeable rating plug technology, this mining-grade breaker delivers the durability and flexibility required for critical electrical protection applications.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 400 A
- Auxiliary Switch:
- 1A-1B right pigtail rear
- Certifications:
- UL Listed
- Frame Size:
- K-frame
- Interrupt Rating:
- 35 kAIC at 480 Vac
- Number Of Poles:
- Three-pole
- Pick Up Delay:
- 125A two- and three-pole independently adjustable short time
- Product Details:
- Specialty frame only
- Product Height:
- 13 in
- Product Length Depth:
- 7 in
- Product Width:
- 11 in
- Rating Plug:
- 70, 90, 100, 125A adjustable interchangeable
- Series:
- Series C
- Terminals:
- T300K line, load English end cap
- Trip Type:
- Interchangeable thermal-magnetic
- Voltage Max:
- 1000Y/577V
- Department:
- Electrical
- Product Group:
- Circuit Protection
- Product Type:
- Circuit Breaker
- Product Subgroup:
- Circuit Breakers
Eaton 6602C72G67 – Frequently Asked Questions
1) Does the Eaton 6602C72G67 K-frame mining breaker come with a rating plug, or do I have to order one separately?
It ships as a frame only. The Eaton 6602C72G67 is catalogued as a specialty frame-only unit, so the interchangeable rating plug is the piece that sets the actual trip point and it has to be specified with the order. The frame accepts adjustable interchangeable plugs at 70, 90, 100 and 125A. Plan the order around which of those four your load calls for, since the plug can be swapped later without changing out the breaker.
2) The breaker is a 400A frame but the rating plugs are 70 to 125A. Which number do I protect the circuit to?
Two different numbers doing two different jobs. 400A is the frame rating, meaning the physical size and current-carrying capacity of the K-frame housing. The installed rating plug is what determines the trip setting, and on this unit the plugs run 70, 90, 100 and 125A. So a conductor fed through this breaker is protected at the plug value, not at 400A. If you need overcurrent protection above 125A, this particular frame assembly is not the one to order.
3) Will a 35 kAIC breaker satisfy my available fault current on a 480V mining feeder?
The interrupting rating on this Eaton Series C K-frame is 35 kAIC at 480 Vac. Pull the available fault current from your short circuit study at the point of installation, and if it is at or below 35 kA at 480V the breaker is properly rated. Above that, you need either a higher interrupting frame or a series-rated combination. The maximum system voltage on this unit is 1000Y/577V, so it is not limited to 480V systems, but the published interrupting figure is the 480 Vac value.
4) Can I use this Eaton K-frame mining breaker on a 1000V mine power system?
Yes. Maximum voltage on the 6602C72G67 is 1000Y/577V, which covers the 1000V wye distribution common on mine power centers and load centers as well as standard 480V three-phase. It is a three-pole device, so it is intended for three-phase feeders rather than single-phase branch work.
5) Does this Eaton breaker have an adjustable short time delay for coordinating with downstream devices?
It does. The 6602C72G67 carries 125A two- and three-pole independently adjustable short time pick-up and delay. That is what lets you hold the upstream breaker in for a defined interval so a downstream device clears the fault first, which is the whole point on a mine feeder where you do not want the main tripping on a motor fault at the section. Set the pick-up and the delay band off your coordination study.
6) Does this Eaton K-frame breaker include auxiliary contacts for remote status?
An auxiliary switch is built in: 1A-1B, right side, rear pigtail leads. That gives you one normally open and one normally closed contact off the mechanism, wired out on flying leads rather than a terminal block, so you can take breaker position back to a PLC, annunciator, or the power center control circuit without adding a field kit.
7) What terminals are on this breaker, and will they land my feeder cable?
The unit is furnished with T300K line terminals and an English load end cap assembly. The end cap arrangement is what mates the breaker into a mine power center or enclosure assembly rather than a standard panelboard interior, so confirm your enclosure was built for a K-frame with an end cap before ordering. Cable lug sizing should be checked against the T300K terminal range for the conductor you are landing.
8) How much space do I need in the enclosure for this Eaton K-frame mining breaker?
The breaker measures 13 in high, 11 in wide, and 7 in deep. Lay that out against your cubicle or power center compartment with room for the rear pigtail aux leads and cable bending space at the terminals. K-frame is a larger molded case footprint than the J or F frames, so a compartment built for a smaller frame will not take it.
9) Is this a thermal-magnetic breaker or an electronic trip unit?
Interchangeable thermal-magnetic. Trip response comes from the bimetal and magnetic element in the frame with the field-changeable rating plug setting the level, plus the separately adjustable short time pick-up and delay. If your spec calls for a full electronic trip unit with LSIG metering and ground fault, this is not that device.
10) Can I change the trip rating later without pulling the breaker out?
That is the reason for the plug design. The rating plugs are interchangeable across 70, 90, 100 and 125A, so if a motor or feeder load changes you swap the plug instead of replacing the frame. Useful for MRO stocking too: one K-frame on the shelf covers four trip levels. Do the change with the breaker open and the compartment de-energized.
11) Is the Eaton Series C mining breaker UL Listed for my facility's electrical inspection?
The Series C K-frame mining breaker is UL Listed. That is the certification carried on the product record and it is what an AHJ or plant electrical inspector will look for on an overcurrent device in an industrial installation.
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Does the Eaton 6602C72G67 come with a warranty?
Absolutely. The Eaton 6602C72G67 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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