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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 400A
- Circuit Breaker Type:
- CHKD
- Frame Size:
- K-frame
- Frequency Rating:
- 50-60 Hz
- Interrupt Rating:
- 65 kAIC at 480 Vac
- Number Of Poles:
- Three-pole
- Series:
- Series C
- Trip Type:
- Fixed thermal, fixed magnetic
- Voltage Rating:
- 600 Vac, 250 Vdc
- Department:
- Electrical
- Product Group:
- Racks & Frames
- Product Subgroup:
- Frames
- Product Type:
- Frame only
- Product Length:
- 4.1 IN
- Product Details:
- Frame only
- Performance Rating:
- 100% rated
- Product Height:
- 5.5 IN
- Product Weight:
- 9.65 LB
- Product Width:
- 5.5 IN
B-LINE CHKD3400F – Frequently Asked Questions
1) Does the Eaton Series C CHKD3400F come with a trip unit, or is it just the breaker frame?
CHKD3400F is a frame only. It is the molded case circuit breaker frame for the Series C K-frame, so any trip unit, terminals, or accessories needed to complete the breaker are ordered separately. If you need a ready-to-install breaker with an integral trip, a frame-only part number is the wrong line item.
2) Will a 400A CHKD frame hold up on a 480V system with high available fault current?
Interrupting rating is 65 kAIC at 480 Vac. If your short circuit study shows available fault current at the breaker location above 65 kA on a 480V bus, this frame is not adequate on its own and you need a higher AIC device or a series-rated combination. At or below 65 kA it is fine.
3) Is the CHKD 400A breaker adjustable, or is the trip fixed?
Trip is fixed thermal, fixed magnetic. There is no adjustable instantaneous or long-time setting to dial in, so coordination has to be worked out on paper before installation. If the job spec calls for an adjustable magnetic or an electronic trip for selective coordination, specify a different Series C trip type.
4) How much space does the Eaton Series C 400A K-frame take up in a panel, and how heavy is it?
The frame measures 5.5 x 4.1 x 5.5 inches (height, length, width as published) and weighs 9.65 lb. Worth checking against your gutter and wireway clearance before you commit to a retrofit into an existing enclosure, and worth knowing the weight if it is going into an overhead-mounted panel.
5) Can I use the CHKD3400F on a DC application?
It carries a 250 Vdc rating alongside 600 Vac, so DC use is within its ratings up to 250 volts. The 65 kA interrupting figure published for it is an AC value at 480 Vac, so do not apply that number to a DC fault calculation.
6) I am standardizing breakers across a facility. What exactly do I order to match this one?
The part number is CHKD3400F, an Eaton Series C K-frame, three-pole, 400A, 100% rated, frame only. Ordering by that MPN gets you the same frame every time; the trip and accessories are separate lines, so build a kit list once and reuse it across openings in your electrical rooms.
How fast can I get the B-LINE CHKD3400F delivered?
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continental
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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 B-LINE CHKD3400F come with a warranty?
Absolutely. The B-LINE CHKD3400F 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 B-LINE CHKD3400F?
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