DK2400 - 400Amp Circuit Breaker

DK2400 - 400Amp Circuit Breaker

When your dependable overcurrent protection is needed in a commercial or industrial electrical system, the DK2400 molded case circuit breaker delivers the ratings and configuration required for many existing power distribution applications. This 400 Amp, 2-pole Series C K-Frame circuit breaker is designed to help protect electrical equipment and conductors from overloads and short-circuit conditions while maintaining compatibility with systems originally engineered around this breaker platform.

The DK2400 features a thermal magnetic T186 trip unit, allowing it to respond to both long-term overload conditions and sudden fault events. Rated for 240 VAC and 250 VDC applications, it offers an interrupting capacity of 65kAIC at 240 VAC and 10kAIC at 250 VDC, making it suitable for a variety of commercial facilities, industrial plants, manufacturing operations, and other demanding electrical environments. An integrated shunt trip provides remote tripping capability, a feature commonly used where enhanced safety controls or emergency shutdown functions are required.

Built for long-term service in power distribution systems, the DK2400 combines proven molded case circuit breaker technology with the durability expected in commercial and industrial applications. Whether you're installing it in switchboards, panelboards, feeder circuits, or other electrical distribution equipment, this breaker provides the form, fit, and function needed to support the ongoing operation of critical electrical infrastructure.

Key Features and Benefits

• 400 Amp continuous current rating
• 2-pole molded case circuit breaker
• Series C K-Frame construction
• Thermal magnetic trip mechanism with T186 trip unit
• 65kA interrupting rating at 240VAC
• 10kAIC interrupting rating at 250VDC
• Complete breaker assembly
• Integrated shunt trip (208-380 VAC or 110-127 VDC)
• Line and load terminal configuration
• Aluminum terminal construction
• Designed for 50/60 Hz electrical systems
• Helps provide protection against overloads and short circuits
• Commonly used in commercial and industrial power distribution systems
• Frequently installed during maintenance, repair, and replacement projects
• Allows existing equipment to remain configured as originally designed
• Built to last for long-term service in demanding environments

Technical Specifications

• Catalog Number: DK2400
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Series C
  
• Circuit Breaker Type: DK
  
• Frame Size: K-Frame
  
• Breaker Configuration: Complete Breaker
  
• Amperage Rating: 400 Amps
  
• Number of Poles: 2
  
• Voltage Rating: 240 VAC, 250 VDC
  
• Trip Type: T186 Thermal Magnetic
  
• Interrupting Capacity: 65kAIC @ 240VAC
  
• Interrupting Capacity (DC): 10kAIC @ 250VDC
  
• Frequency Rating: 50/60 Hz
  
• Shunt Trip: 208-380 VAC or 110-127 VDC, same side with left pigtail shunt
  
• Terminal Configuration: Line and Load
  
• Terminal Material: Aluminum
  
• Length/Depth: 10.1 in.
  
• Height: 5.5 in.
  
• Width: 4.3 in.
  
• Weight: 11.5 lbs.
  
• UPC: 786679044070
  

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: Intended for installation in accordance with applicable electrical codes and equipment specifications.
• Installation Guidance: Suitable for installation and servicing by qualified electrical professionals.
• Special Configuration: Designed for applications requiring a molded case thermal magnetic circuit breaker with integrated shunt trip capability.
  

Where It Works Best

• Commercial electrical distribution systems
• Industrial manufacturing facilities
• Institutional and government buildings
• Mechanical and process equipment power distribution
• Motor and feeder circuit protection applications
• Switchboards and panelboard installations
• Electrical maintenance and replacement projects
• Facility modernization and refurbishment programs
• Existing Series C K-Frame systems requiring compatible replacement breakers
• Applications requiring remote trip functionality through an integrated shunt trip
• Systems requiring 400 Amp, 2-pole overcurrent protection with 65kA interrupting capacity

For facilities operating equipment designed around Series C K-Frame circuit breakers, the DK2400 provides a compatible replacement option that helps maintain original electrical ratings, physical fitment requirements, and intended protection characteristics while preserving the original system configuration.