Eaton / Cutler-Hammer HKD3400W Molded Case Circuit Breaker
- 400A
- 3 Pole
- Panel Mount
Eaton / Cutler-Hammer
HKD3400W
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HKD3400W
Quantity
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Eaton / Cutler-Hammer HKD3400W - 400A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for heavy-duty applications, the HKD3400W is a 400A, three-pole MCCB from Eaton. It utilizes thermal-magnetic trip technology (LI) to deliver precise overcurrent protection. Designed for Series C panelboards, this K-frame unit replaces the older KD3400W. The "W" suffix indicates it is supplied without terminals, allowing engineers to install custom lug kits tailored to their project. Rated at 65 kAIC at 480VAC, it safely clears severe faults and features an interchangeable trip unit.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HKD3400W |
| Series | HKD |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600VAC, 22kA @ 250VDC |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | None (Terminals excluded by 'W' suffix) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed, Interchangeable Trip Unit |
Product FAQs
6 answersWhat equipment is the HKD3400W designed to be installed in?
This K-Frame breaker is engineered specifically for integration into Eaton Series C panelboards, switchboards, and motor control centers.
Does the HKD3400W offer high interrupting capacity for industrial use?
Yes, as an HKD-designated breaker, it provides a high interrupting rating of 65kA at 480VAC and 100kA at 240VAC. This makes it suitable for heavy commercial and industrial systems with high available fault currents.
Are the trip settings on the HKD3400W adjustable during installation?
The magnetic trip is adjustable, allowing electricians to fine-tune the instantaneous short-circuit response. The thermal element for overload protection remains fixed.
Can the HKD3400W be used to upgrade an existing KD3400 breaker?
Yes, the HKD3400W shares the exact same physical K-Frame dimensions as the standard KD3400 but delivers a higher interrupting capacity. This makes it a direct drop-in upgrade for systems requiring elevated fault tolerance.
What type of fault protection does the HKD3400W provide?
It utilizes a thermal-magnetic trip unit with an LI function code. This delivers comprehensive safety by using a fixed thermal element to protect against sustained overloads and an adjustable magnetic element to clear instantaneous short circuits.
Can the HKD3400W be utilized in direct current applications?
Yes, in addition to its AC ratings, this breaker is fully rated for DC power systems. It provides an interrupting capacity of 22kA at 250VDC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 4 reviews.
Total 5 star reviews: 4 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
4 reviews
- ASAaron S.Verified BuyerReviewingEaton / Cutler-Hammer HKD3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/13/26Worked as advertised
Don't forget the lug kit if needed
- LHLarry H.Verified BuyerReviewingEaton / Cutler-Hammer HKD3200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/19/25It was great
New breaker
- CSCatherine S.ReviewingEaton / Cutler-Hammer HKD3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/24/22Great
Great Service / Prompt Delivery
- FSFrank S.ReviewingEaton / Cutler-Hammer HKD3400 - 400A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/23/17Breaker purchase
Purchased breaker at a great price, was in stock and shipped it out right away. Will shop at this site again in the future.