Eaton / Cutler-Hammer DK3300W Molded Case Circuit Breaker
- 300A
- 3 Pole
- Panel Mount
Eaton / Cutler-Hammer
DK3300W
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
DK3300W
Quantity
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Eaton / Cutler-Hammer DK3300W - 300A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
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Eaton / Cutler-Hammer DK3300W - 300A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | DK3300W |
| Series | DK |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Panel 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, Switchboards, Motor Control Centers |
| 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, Lug Kits |
|---|---|
| Accessories | Without Line and Load Terminals |
| Standards | HACR, NEMA AB 1, UL 489, CSA C22.2 No. 5 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Sold out
Quantity
Eaton / Cutler-Hammer DK3300W - 300A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | DK |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Panel 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, Switchboards, Motor Control Centers |
| 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, Lug Kits |
|---|---|
| Accessories | Without Line and Load Terminals |
| Standards | HACR, NEMA AB 1, UL 489, CSA C22.2 No. 5 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
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Description
Designed for robust industrial applications, the Eaton DK3300W is a 300A, 3-pole MCCB from the Series C lineup. It provides dependable long-time and instantaneous protection using fixed thermal-magnetic trip technology. The K-frame breaker installs into compatible Eaton panelboards, motor control centers, and switchboards. Supplied without line and load terminals, it allows for custom lug kits and serves as a substitute for the KD3300W.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | DK |
| Amperage | 300A |
| Poles | 3 |
| Mounting Style | Panel 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, Switchboards, Motor Control Centers |
| 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, Lug Kits |
|---|---|
| Accessories | Without Line and Load Terminals |
| Standards | HACR, NEMA AB 1, UL 489, CSA C22.2 No. 5 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
8 answersDoes the Eaton DK3300W include line and load lugs?
No. The W suffix in the DK3300W catalog number indicates it is supplied without line and load terminals. Lug kits must be sourced separately or reused from an existing compatible breaker.
Can the DK3300W replace a KD3300W circuit breaker?
Yes, the DK3300W shares the exact same physical K-frame dimensions and can replace a KD3300W, provided the system voltage does not exceed 240VAC or 250VDC. The KD series is rated for up to 600VAC, whereas the DK series is strictly rated for 240VAC maximum.
What frame size is the DK3300W built on?
The DK3300W is built on the Eaton Series C K-frame platform. It shares the same physical footprint and internal accessory compatibility as other K-frame breakers, including the KD, HKD, and KDC models.
What are the physical dimensions of the DK3300W K-frame breaker?
The breaker measures approximately 10.13 inches in height, 5.5 inches in width, and 4.1 inches in depth.
Can I field-install internal accessories on the DK3300W?
Yes. As a Series C K-frame breaker, it accepts standard internal accessories such as shunt trips, auxiliary switches, and undervoltage releases. Internal accessories must be installed before the breaker is mounted and connected to the bus.
Is the trip unit on the DK3300W adjustable?
No. This breaker features a non-interchangeable thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip functions. It cannot be adjusted in the field.
Can the DK3300W be used in DC distribution systems?
Yes. In addition to its 240VAC rating, the DK3300W is UL listed for direct current applications up to 250VDC, providing a 10kAIC interrupting rating for DC control and distribution circuits.
Where is the DK3300W typically installed?
This bolt-on breaker is designed for installation in Eaton Series C panelboards, switchboards, and motor control centers. It requires a K-frame mounting footprint and appropriate bus connections.
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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!