SKU: 85864182816

Eaton Cutler-Hammer HKDDC3400 400A 3-Pole Molded Case Circuit Breaker – Bolt-On Mount – 600VDC

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Description

Eaton Cutler-Hammer HKDDC3400 400A 3-Pole Molded Case Circuit Breaker – Bolt-On Mount – 600VDCThe Eaton Cutler Hammer HKDDC3400 is a heavy duty K frame molded case circuit breaker designed to provide dependable protection in DC electrical distribution systems. Featuring a thermal magnetic interchangeable trip unit, this breaker ensures accurate overload and short circuit protection while allowing adjustable trip settings for different operational requirements. With a 400 ampere rating at 40C and high DC interrupting capacity, the HKDDC3400 is

The Eaton Cutler-Hammer HKDDC3400 is a heavy-duty K-frame molded case circuit breaker designed to provide dependable protection in DC electrical distribution systems. Featuring a thermal-magnetic interchangeable trip unit, this breaker ensures accurate overload and short-circuit protection while allowing adjustable trip settings for different operational requirements. With a 400-ampere rating at 40°C and high DC interrupting capacity, the HKDDC3400 is well suited for industrial facilities, renewable energy systems, battery storage installations, and other demanding DC power applications. The bolt-on mounting design ensures secure installation in electrical panels and switchgear, while the standard terminal configuration simplifies wiring and system integration.

Product Specifications

  • Brand: Eaton / Cutler-Hammer
  • Model: HKDDC3400
  • Breaker Type: Molded Case Circuit Breaker (MCCB)
  • Frame Style: HKD (K-Frame)
  • Rated Current: 400 Ampere
  • Number of Poles: 3 Pole
  • Trip Unit Type: Thermal Magnetic Interchangeable Trip Unit
  • Mounting Type: Bolt-On Connection
  • Terminal Configuration: With Terminals Standard
  • Warranty: One Year Manufacturer Warranty

Technical Specifications

  • Frame Type: K-Frame
  • Trip Adjustment Range: Adjustable from 5× to 10× the continuous ampere rating
  • Operating Temperature Reference: 40°C
  • Protection Type: Overload and Short Circuit Protection
  • Breaker Construction: Molded insulated case for durability and electrical safety
  • Application Type: DC power protection and distribution systems

Voltage and Ratings

  • Maximum Voltage: 600 VDC
  • Interrupting Rating (1 Pole in Series): 42 kA @ 125 VDC
  • Interrupting Rating (2 Poles in Series): 50 kA @ 250 VDC
  • Interrupting Rating (3 Poles in Series): 42 kA @ 600 VDC
  • Frequency Reference (AC): 50/60 Hz

Product Data

  • Manufacturer: Eaton / Cutler-Hammer
  • Product Series: HKD Series
  • Model Number: HKDDC3400
  • Current Rating: 400A
  • Number of Poles: 3
  • Connection Type: Bolt-On
  • Terminal Type: Standard Terminals Included
  • Application: Industrial DC power distribution, battery systems, and renewable energy protection circuits

Important Note

The product image typically represents a base model for identification purposes only, and the final configuration may vary depending on installed accessories or selected options. If accessories are ordered together with the breaker, they can be installed according to your specific configuration requirements at no additional cost. Please include the necessary configuration details in the order comment section during checkout to ensure proper assembly before shipment.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 85864182816

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4.8 ★★★★★
Based on 26 reviews
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Product Reviews
J
Jimmylee
Natrona Heights, US
★★★★★ 5
Incredibly Comfortable and Supportive — My New Favorite Pillow！
I wasn’t expecting to love this pillow as much as I do, but the DIORIS large sleeping pillow really exceeded my expectations. From the first night, I noticed a difference in the way my neck and shoulders felt in the morning—less tension, better alignment, and overall more restful sleep. The fill is just the right balance between plush and supportive. It doesn’t flatten out during the night, which is a problem I’ve had with other pillows, especially those that come overstuffed or too soft. This one holds its shape well but still has that cozy, cloud-like feel when you lay your head on it. I’m a side and back sleeper, and this pillow works beautifully in both positions. It’s also large enough that I don’t feel like I’m falling off it during the night, but not so big that it takes over the whole bed. One suggestion: if you’re picky about loft, you might want to give it a gentle fluff or adjust the fill before your first night. But honestly, I didn’t need to do much—it was pretty much perfect out of the bag. Highly recommended if you're looking for a high-quality, comfortable, and generously sized pillow that supports a great night’s sleep!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2025
B
Bearyjeans
Whiting, US
★★★★★ 5
Hotel like pillow
These pillows were a pleasant surprise. I bought the set for our guest room but ended up keeping them for our own bed after trying them out. They feel incredibly soft yet still provide enough support to keep my neck from feeling stiff in the morning. I sleep on my side and back, and these work great for both positions. My spouse, who usually runs hot at night, said they stayed cool and breathable. The material feels high quality, and I love that they’re machine washable without losing their shape. They fluffed right back up after drying. If you're looking for that plush hotel-pillow feel with everyday practicality, this set really delivers.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2025
A
Amy Morley
Lake Worth, US
★★★★★ 4
Very soft, not firm at all
This pillow is very floppy and not firm at all. It is quite large and I was surprised at the size. My dog has taken a liking to it and decided it's now her new dig bed, which is fine by me, because it's really too soft for my liking. If you like soft pillows then this is for you. If you require something with a bit more support then you won't enjoy this pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2025
R
Ronnie
San Leandro, US
★★★★★ 5
Soft and supportive
I recently purchased the this pillow and I am happy with the quality and comfort it provides. Pillow is soft, plush, and supportive without being too firm. The down alternative fill offers the balance of fluffiness and structure, making them ideal for all sleep positions. Whether I’m sleeping on my back, side, or stomach, these pillows adapt beautifully and keep me comfortable throughout the night. They’re also breathable and skin-friendly, which is a huge plus for anyone with sensitive skin. After using them, I wake up feeling well-rested and free of neck stiffness. I like it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2025
H
Honest Reviews
Bozeman, US
★★★★★ 5
Pillow
These DIORIS pillows are a game-changer! I’ve tried many pillows over the years, but these are by far the best. The down alternative fill is incredibly soft yet supportive, providing just the right amount of fluffiness without feeling too firm or too soft. I sleep on my side, and these pillows cradle my head and neck perfectly, giving me the support I need for a restful night. They’re breathable and skin-friendly, which is great since I tend to get hot while I sleep. The queen size is just right for my bed, and the pillows maintain their shape night after night. They feel like luxury hotel pillows! Highly recommend for anyone looking for a comfortable, supportive, and durable pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2025

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