Eaton / Cutler-Hammer DK3400V Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
DK3400V
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
DK3400V
Quantity
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Eaton / Cutler-Hammer DK3400V - 400A 3 Pole Molded Case Circuit Breaker
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Description
Built specifically for high-temperature environments, the DK3400V is a 3-pole, 400A Series C K-Frame MCCB. Unlike standard models, it features a specialized 50°C ambient calibration to prevent nuisance tripping in exceptionally warm industrial settings. This unit-mount breaker installs into Eaton panelboards and motor control centers, serving as a drop-in substitute for the standard 40°C DK3400. Delivering 65kAIC at 240VAC, it provides robust thermal-magnetic (LI) overcurrent protection.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | DK3400V |
| Series | DK |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 10kA @ 250VDC |
| Frame Type | DK |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Motor Control Centers, Switchboards |
| Wire Gauge | (2) 3/0 AWG - 250 kcmil (Al/Cu) |
| Max Wire | 250 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Line and Load Lugs (TA400K) |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 50C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, 50C Ambient Calibration |
Product FAQs
6 answersWhat enclosures or panelboards accept the DK3400V?
The DK3400V is designed for use in Eaton Series C panelboards, motor control centers, and switchboards that accept K-frame unit mount breakers.
What wire sizes and types are compatible with the standard lugs on this breaker?
The standard line and load lugs accept two 3/0 AWG to 250 kcmil aluminum or copper conductors per phase.
What does the "V" suffix in the DK3400V catalog number signify?
The "V" suffix indicates that the breaker is calibrated for use in 50 degrees Celsius (122 degrees Fahrenheit) ambient temperatures, which is often required for marine, mining, or high-temperature industrial environments.
Can I adjust the trip settings on the DK3400V for specific load requirements?
No, this breaker features a fixed thermal and fixed magnetic trip unit. If you require adjustable trip settings in a 400A K-frame, you will need a breaker with an electronic trip unit, such as an OPTIM or Digitrip model.
How does the DK3400V mount into an enclosure?
This is a unit mount, feed-thru circuit breaker. It bolts directly to the enclosure backpan or mounting plate rather than plugging onto a busbar.
Can the DK3400V be used as a direct replacement for a standard DK3400?
Yes, it shares the exact same physical dimensions and K-frame mounting footprint as the standard DK3400. The primary difference is that the DK3400V is calibrated for higher ambient temperatures.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 3 reviews.
Total 5 star reviews: 3 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
3 reviews
- MDMichael D.Verified BuyerReviewingEaton / Cutler-Hammer DK3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/13/26Perfect fit and fast shipping
My animal hospital had the main breaker fail. They were able to get the breaker to me in record time. Went right in and fixed the problem.
- TPThomas P.ReviewingEaton / Cutler-Hammer DK3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/26/23Quick and on time
The service was quick and on time, no problems with the breaker.
- LFLou F.ReviewingEaton / Cutler-Hammer DK3300 - 300A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/24/20Owner
Purchasing from Superbreakers has been a great experience! It was quick and easy. The inventory was awesome. We needed some advice and your crack team of experts was very helpful! Thanks!