DK3300 - 300Amp Circuit Breaker
- 300 Amp
- 65k @ 240VAC
- 3 Pole
Purchase Options: New In Box
DK3300 - 300Amp Circuit Breaker Description
DK3300 - 300Amp Circuit Breaker
When an electrical system depends on dependable overcurrent protection, finding the correct replacement breaker matters. The Eaton DK3300 is a 300 Amp, 3-pole molded case circuit breaker from Eaton's well-known Series C K-Frame family, designed for use in commercial and industrial power distribution systems. Whether you're maintaining existing equipment, replacing a failed breaker, or completing a facility upgrade project, the DK3300 provides the form, fit, and function needed to match the original system design.
Electrical systems often remain in service for decades, and replacing a breaker with the correct specifications helps preserve the integrity of the original installation. The DK3300 is frequently selected by electrical contractors, maintenance teams, and facility managers who need a compatible 300A Eaton Series C circuit breaker that aligns with existing equipment requirements. Built to last and designed for demanding environments, this breaker continues to be a practical solution for ongoing maintenance, repair, and power distribution projects.
Key Features and Benefits
- 300 Amp continuous current rating
- Three-pole molded case circuit breaker
- Eaton Series C K-Frame construction
- T186 thermal magnetic trip unit
- Complete breaker assembly
- Line and load terminal configuration
- 65kAIC interrupting capacity at 240 VAC
- 10kAIC interrupting capacity at 250 VDC
- Suitable for AC and DC applications within specified ratings
- Designed for 50/60 Hz electrical systems
- Helps protect circuits from overload and short-circuit conditions
- Commonly used in commercial and industrial electrical distribution systems
- Suitable for maintenance, repair, and replacement applications
- Maintains compatibility with existing Eaton Series C K-Frame installations
- Aluminum terminal construction
- Built to last for long-term service in demanding environments
Technical Specifications
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Catalog Number: DK3300
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Product Type: Molded Case Circuit Breaker
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Manufacturer: Eaton
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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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Breaker Configuration: Complete Breaker
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Amperage Rating: 300 Amps
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Number of Poles: 3
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Voltage Rating: 240 VAC, 250 VDC
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Trip Type: 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: Line and Load
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Terminal Material: Aluminum
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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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Product Weight: 11.5 lbs.
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UPC: 786679044131
Material Compliance and Certifications
- UL Listed: Manufactured as part of the Eaton Series C molded case circuit breaker family.
- Application Requirements: Designed for use in electrical distribution systems requiring properly rated overcurrent protection.
- Code Compliance: Suitable for installation in accordance with applicable electrical codes and equipment specifications.
- Installation Guidance: Intended for installation and servicing by qualified electrical professionals.
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Manufacturing Standards: Manufactured to meet applicable Eaton certification and product compliance requirements.
Where It Works Best
- Commercial electrical distribution systems
- Industrial manufacturing facilities
- Institutional and educational campuses
- Municipal and government facilities
- Feeder circuit protection applications
- Switchboards and switchgear installations
- Panelboard applications requiring compatible K-Frame breakers
- Electrical distribution equipment
- Mechanical and process equipment power systems
- Facility maintenance and repair projects
- Electrical modernization and refurbishment programs
- Existing Eaton Series C K-Frame systems requiring form, fit, and functional replacement
- Applications requiring 300 Amp, 3-pole overcurrent protection
- Systems requiring 65kA interrupting capacity at 240 VAC
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:300
- 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. Includes Line and Load Lugs
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.
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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).