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Spec Sheet
Product Specs
- Amperage Rating:
- 400A
- Circuit Breaker Type:
- HKD
- Frame Size:
- K-frame
- Frequency Rating:
- 50-60 Hz
- Interrupt Rating:
- 100 kAIC at 240 Vac, 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
- Product Height:
- 5.5 IN
- Product Weight:
- 9.8 LB
- Product Width:
- 5.5 IN
B-LINE HKD3400F – Frequently Asked Questions
1) Does the Eaton HKD3400F come with a trip unit, or is it just the breaker frame?
The HKD3400F is supplied as a frame only, meaning you get the K-frame breaker housing without a separate trip unit assembly. Trip characteristics on this one are fixed thermal, fixed magnetic, so the protection is built in rather than field adjustable. If your spec calls for an adjustable or electronic trip, an HKD frame is not the right pick.
2) What interrupting rating does the Eaton HKD3400F have at 480V?
65 kAIC at 480 Vac, and 100 kAIC at 240 Vac. If your available fault current at the panel exceeds those figures at your system voltage, this breaker will not meet the short circuit requirement and you need a higher AIC frame.
3) Will an HKD3400F work on a 600V three-phase service?
Yes on voltage, with a caveat. The HKD3400F is rated 600 Vac and 250 Vdc, and it is a three-pole breaker at 50 to 60 Hz, so it suits standard three-phase AC distribution up to 600 volts. The published interrupting ratings cover 240 Vac and 480 Vac, so at 600 volts confirm the AIC value against your fault study before you commit.
4) What amperage is the HKD3400F rated for?
400 amps. The model number carries it: HKD is the breaker type, the 3 is three-pole, and 400 is the ampere rating. It is an Eaton Series C K-frame device, so it slots into panelboards and switchboards prepped for a 400A K-frame breaker.
5) Is the trip setting on the HKD3400F adjustable in the field?
No. Trip type is fixed thermal and fixed magnetic, so both the overload and the instantaneous settings are factory set at the 400A rating. For a job where the maintenance crew needs to tune pickup or delay for coordination, you want an adjustable or electronic trip frame instead.
6) How much space do I need in the enclosure for an Eaton K-frame 400A breaker?
Plan for a body measuring 5.5 x 5.5 x 4.1 inches (height, width, length as published) and a unit weight of 9.8 pounds. On a three-pole K-frame at that weight, mount it to the panel interior rather than supporting it on the conductors alone.
7) Can I use the HKD3400F on a DC circuit?
It carries a 250 Vdc rating alongside the 600 Vac rating, so DC application up to 250 volts is within the device rating. The published interrupting ratings, 100 kAIC at 240 Vac and 65 kAIC at 480 Vac, are AC figures, so size your DC application against Eaton's DC data for the HKD type.
8) What is the exact part number to order for this Eaton 400A K-frame breaker?
Order by Eaton catalog number HKD3400F. That is the full designation for the 400A three-pole Series C K-frame device, and it is the number to quote for a like-for-like replacement in an existing panel.
9) Will the HKD3400F run on 50 Hz power for an export or overseas install?
Yes. The frequency rating covers 50 to 60 Hz, so it works on 50 Hz systems as well as North American 60 Hz, within the 600 Vac ceiling.
How fast can I get the B-LINE HKD3400F 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 HKD3400F come with a warranty?
Absolutely. The B-LINE HKD3400F is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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