DK3400W - 400Amp Circuit Breaker
- 400 Amp
- 65k @ 240VAC
- 3 Pole
Purchase Options: Refurbished
DK3400W - 400Amp Circuit Breaker Description
DK3400W - 400Amp Circuit Breaker
When a critical electrical system needs a replacement breaker, finding the right match is about more than just amperage. The Eaton DK3400W Series C molded case circuit breaker is designed for applications requiring a 400 Amp, 3-pole K-Frame breaker with a T186 thermal magnetic trip unit and 65kA interrupting capacity at 240 VAC. Whether you're maintaining existing power distribution equipment, performing scheduled maintenance, or replacing a failed breaker during a shutdown, matching the original specifications is essential to keeping your system operating as intended.
The DK3400W is part of Eaton's widely used Series C product line and is engineered for compatibility with systems designed around the K-Frame platform. Rated for 240 VAC and 250 VDC applications, this complete molded case circuit breaker helps provide dependable overload and short-circuit protection while preserving the electrical characteristics specified by the original equipment. Its three-pole design makes it suitable for a wide range of commercial and industrial power distribution applications where maintaining existing system parameters is a priority.
Key Features and Benefits
- 400 Amp continuous current rating
- Three-pole molded case circuit breaker
- Eaton Series C K-Frame construction
- Complete breaker assembly
- T186 thermal magnetic trip unit
- Supplied without terminals
- 65kAIC interrupting capacity at 240 VAC
- 10kAIC interrupting capacity at 250 VDC
- Rated for 240 VAC and 250 VDC applications within specified limits
- Suitable for 50/60 Hz electrical systems
- Provides overload and short-circuit protection
- Supports compatibility with existing Eaton Series C K-Frame installations
- Commonly used in commercial and industrial electrical distribution systems
Technical Specifications
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Catalog Number: DK3400W
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Manufacturer: Eaton
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Product Type: Molded Case Circuit Breaker
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Series: Series C
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Circuit Breaker Type: DK
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Frame Size: K-Frame
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Circuit Breaker Frame Type: Complete Breaker
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Amperage Rating: 400 Amps
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Number of Poles: 3
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Voltage Rating: 240 VAC, 250 VDC
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Trip Unit: T186 Thermal Magnetic
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Interrupting Capacity: 65kAIC @ 240 VAC
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Interrupting Capacity (DC): 10kAIC @ 250 VDC
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Frequency Rating: 50–60 Hz
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Terminal Configuration: Without Terminals
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Length/Depth: 4.1 in.
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Height: 5.5 in.
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Width: 5.5 in.
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Weight: 11.4 lbs.
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UPC: 786679044698
Material Compliance and Certifications
- UL Listed: Manufactured as part of Eaton's Series C molded case circuit breaker product family.
- Application Requirements: Designed for use in electrical distribution systems requiring properly rated overcurrent protection.
- Code Compliance: Intended for installation in accordance with applicable electrical codes and equipment specifications.
- Installation Guidance: Suitable for installation and servicing by qualified electrical professionals.
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Manufacturer Support: Backed by Eaton's published warranty and product support policies.
Where It Works Best
- Commercial electrical distribution systems
- Industrial facilities and manufacturing plants
- Institutional and educational campuses
- Municipal and government facilities
- Power distribution equipment maintenance projects
- Switchboards and switchgear assemblies
- Panelboard applications requiring compatible K-Frame breakers
- Feeder circuit protection applications
- Facility modernization and refurbishment projects
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Eaton®, Cutler-Hammer®, Westinghouse®, Challenger®, Bussmann®, Crouse-Hinds®, and Cooper® are registered trademarks of Eaton Corporation plc. Products sold are surplus, used, or refurbished and are NOT supplied by Eaton Corporation plc or its affiliates.
Specifications
- Width:5.5
- Height:10.13
- Depth:4.1
- Poles:3
- Amperes:400
- A.I.C. Rating & Volts:65k @ 240VAC
- Type:DK
- Approx Dimensions:5.50"W x 10.13"L x 4.10"D
- Additional Notes:40°C, HACR Rated, K-Frame, Thermal Magnetic Circuit Breaker with Non-Interchangeable Trip Unit. Lugs are NOT included
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE ground shipping on breaker orders over $100 and all other items with orders over $500.
Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.
If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.
CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
We strive to ship out your items within one business day.
In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).