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Manufacturer Resources
Spec Sheet
Product Specs
- Amperage Rating:
- 250A
- Circuit Breaker Frame Type:
- Complete breaker
- Circuit Breaker Type:
- DK
- Frame Size:
- K-frame
- Frequency Rating:
- 50-60 Hz
- Interrupt Rating:
- 65 kAIC at 240 Vac, 10 kAIC at 250 Vdc
- Number Of Poles:
- Three-pole
- Series:
- Series C
- Terminal Material:
- Aluminum
- Terminals:
- Line and load
- Trip Type:
- Fixed thermal, fixed magnetic
- Voltage Rating:
- 240 Vac, 250 Vdc
- Department:
- Electrical
- Product Length:
- 4.1 IN
- Product Height:
- 5.5 IN
- Product Weight:
- 11.5 LB
- Product Width:
- 5.5 IN
B-LINE DK3250 – Frequently Asked Questions
1) What is the interrupting rating of the DK3250, and will it meet a 65 kAIC available fault current?
Yes at 240 Vac. The DK3250 interrupts 65 kAIC at 240 Vac, and 10 kAIC at 250 Vdc. If your short circuit study shows more than 65 kA available at the 240 volt bus, you need a higher AIC device or series-rated combination.
2) Is the DK3250 a complete breaker or just a trip unit that needs a frame?
It ships as a complete breaker, not a separate frame and trip unit. It's a K-frame device in Eaton's Series C line, so nothing else has to be ordered to make it a functioning breaker. Line and load terminals are included.
3) Is the DK3250 adjustable, or is the trip setting fixed?
Fixed on both ends: fixed thermal and fixed magnetic trip. There is no adjustable instantaneous dial and no electronic trip unit. If your coordination study calls for an adjustable magnetic setting, you need a different trip type, not this one.
4) Will a DK3250 drop into a panel that currently has another K-frame breaker in it?
The DK3250 is a K-frame, DK type breaker in the Eaton Series C family, so it shares that frame class. Frame size alone does not guarantee a fit: mounting pattern, interior type and panel labeling all have to match the DK type. Check the panel's breaker schedule or the interior label for an accepted DK designation before ordering a replacement.
5) Can I land copper conductors on the DK3250 terminals?
The terminals are aluminum body lugs supplied on both line and load. Aluminum lugs on molded case breakers are normally dual rated AL/CU, so conductor material should be confirmed against the marking stamped on the lug itself before termination. Use the correct compound and torque for the conductor you land.
6) How much space does the DK3250 breaker need in the enclosure, and how heavy is it?
The breaker measures 5.5 x 4.1 x 5.5 inches and weighs 11.5 lb. At that weight, plan on mounting hardware rated for it and a second set of hands when you are working it into an existing panel interior.
7) Can the DK3250 be used on a 250 volt DC application like a battery or solar disconnect?
It carries a DC rating of 250 Vdc with a 10 kAIC interrupting rating on DC, alongside the 240 Vac AC rating. The DC interrupting capacity is much lower than the AC figure, so on a DC system confirm the available fault current stays under 10 kA at the point of installation.
8) What is the exact part number to order this 250A Eaton Series C breaker?
Order it as DK3250. That is the manufacturer part number and the only configuration offered, so there are no poles, trip or terminal options to select. A full spec sheet for DK3250 is published by Eaton and linked from the product information.
How fast can I get the B-LINE DK3250 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 B-LINE DK3250 come with a warranty?
Absolutely. The B-LINE DK3250 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 DK3250?
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installation tips, and troubleshooting. Contact Us
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