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Manufacturer Resources
Product Specs
- Amperage Rating:
- 400A
- Certifications:
- UL Listed
- Circuit Breaker Frame Type:
- Complete breaker
- Circuit Breaker Type:
- CKD
- Frame:
- K-frame
- Frequency Rating:
- 50-60 Hz
- Interrupt Rating:
- 35 kAIC at 480 Vac, 25 kAIC at 600 Vac
- Number Of Poles:
- Three-pole
- Product Height:
- 5.5 IN
- Product Length Depth:
- 12.25 IN
- Product Weight:
- 6.75 LB
- Product Width:
- 5 IN
- Series:
- Series C
- Terminals:
- Without terminals
- Trip Type:
- Electronic LSIA
- Voltage Rating:
- 600 Vac, 250 Vdc
- Department:
- Electrical
- Performance Rating:
- 100% rated
B-LINE CKD3400T57W – Frequently Asked Questions
1) Does the Eaton Series C CKD3400T57W breaker come with lugs or terminals?
No. The CKD3400T57W is supplied without terminals, so you have to order the lug or terminal kit for the K-frame separately and size it to your conductor. Plan for that before the install date, because the breaker cannot be landed on cable as shipped.
2) What is the interrupting rating of the CKD 400A three-pole breaker at 480V and 600V?
35 kAIC at 480 Vac and 25 kAIC at 600 Vac. If your short circuit study shows available fault current above those figures at the point of application, this breaker is not the right choice without series rating or current limiting ahead of it.
3) Will this Eaton Series C breaker work on a 600V three-phase system, and can it be used on DC?
It is rated 600 Vac and 250 Vdc, three-pole, so it covers 480Y/277, 600 Vac three-phase distribution and DC applications up to 250 volts. Frequency rating is 50 to 60 Hz.
4) What does the OPTIM 550 electronic LSIA trip unit give me over a thermal-magnetic breaker?
LSIA means the trip unit has adjustable long time, short time, instantaneous and ground fault alarm functions, so you can coordinate this 400A breaker with upstream and downstream devices instead of accepting a fixed thermal-magnetic curve. That matters on a selectively coordinated feeder where a downstream fault should not open the main. A thermal-magnetic K-frame is the simpler, non-adjustable alternative where coordination is not required.
5) Is the CKD3400T57W a complete breaker or just an interchangeable trip unit?
Complete breaker. You get the molded case K-frame device with the OPTIM 550 electronic trip, not a trip unit or a replacement frame only. Terminals are the one thing not included.
6) What are the dimensions and weight of this K-frame 400A breaker for panel or enclosure planning?
Figure 12.25 inches in length or depth, 5.5 inches high and 5 inches wide, at 6.75 pounds. Use those numbers to confirm gutter space and mounting depth in the enclosure before you commit, since K-frame devices are deeper than the smaller F-frames.
How fast can I get the B-LINE CKD3400T57W delivered?
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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 B-LINE CKD3400T57W come with a warranty?
Absolutely. The B-LINE CKD3400T57W is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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