DK3350W - 350Amp Circuit Breaker

DK3350W - 350Amp Circuit Breaker

The Eaton DK3350W molded case circuit breaker is a 350 Amp, 3-pole breaker designed to provide dependable overcurrent protection in commercial and industrial power distribution systems. As part of Eaton's trusted Series C K-Frame family, this breaker is frequently used in facilities where maintaining compatibility with existing electrical infrastructure is essential. Whether you're replacing a failed unit during maintenance or sourcing a matching breaker for an ongoing project, the DK3350W delivers the form, fit, and function required for compatible installations.

Built to help protect electrical equipment from overloads and short circuits, the DK3350W features a T186 thermal magnetic trip unit and offers an interrupting capacity of 65kAIC at 240 VAC and 10kAIC at 250 VDC. These ratings make it suitable for a wide range of demanding power distribution applications, including manufacturing facilities, commercial buildings, institutional campuses, and industrial operations. The breaker is supplied without terminals, allowing flexibility for applications where compatible terminals are already in place or specified separately.

Key Features and Benefits

• 350 Amp continuous current rating
• Three-pole molded case circuit breaker
• Eaton Series C K-Frame design
• 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
• Designed for 50/60 Hz electrical systems
• Helps protect circuits from overload and short-circuit conditions

Technical Specifications

• Catalog Number: DK3350W
  
• Manufacturer: Eaton
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Series C
  
• Circuit Breaker Type: DK
  
• Frame Size: K-Frame
  
• Breaker Configuration: Complete Breaker
  
• Amperage Rating: 350 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 240 VAC, 250 VDC
  
• Trip Unit: T186 Thermal Magnetic
  
• Interrupting Capacity: 65kAIC @ 240 VAC
  
• Interrupting Capacity (DC): 10kAIC @ 250 VDC
  
• Frequency Rating: 50/60 Hz
  
• Terminal Configuration: Without Terminals
  
• Length/Depth: 4.1 in.
  
• Height: 5.5 in.
  
• Width: 5.5 in.
  
• Weight: 11.3 lbs.
  
• UPC: 786679044681
  

Material Compliance and Certifications

• UL Listed: Manufactured as part of Eaton's Series C molded case circuit breaker 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.
• Manufacturing Standards: Manufactured to meet applicable Eaton certification and compliance requirements.
  

Where It Works Best

• Commercial electrical distribution systems
• Industrial manufacturing facilities
• Processing and production plants
• Institutional and educational campuses
• Municipal and government facilities
• Feeder circuit protection applications
• Switchboards and switchgear assemblies
• Panelboards requiring compatible K-Frame breakers
• Electrical distribution equipment maintenance projects
• Facility modernization and refurbishment programs