KDC3400 - 400Amp Circuit Breaker

KDC3400 - 400Amp Circuit Breaker

If KDC3400 is the catalog number specified for the equipment you're maintaining, it's worth checking the complete breaker configuration before installation. The KDC3400 is a 400-amp, three-pole Series C Type KDC molded case circuit breaker supplied as a complete K-frame breaker with a T186 trip type. Check the catalog number, Type KDC designation, K frame, T186 trip type, amperage, poles, voltage, interrupting ratings, terminals, frequency, and dimensions against the requirements of the equipment already in service. When those details correspond, the KDC3400 can provide the necessary form, fit, and function for a compatible replacement application.

Key Features and Benefits

• 400A, three-pole configuration: Provides the specified amperage and pole arrangement for equipment requiring this particular KDC3400 configuration.
• Series C Type KDC: Gives maintenance personnel a clear breaker family and type designation to verify during replacement work.
• Complete K-frame breaker: Supplied as a complete breaker rather than a frame-only component, helping clarify what configuration is being matched.
• T186 trip type: An important identifying specification to compare with the requirements of the existing equipment.
• 600VAC and 250VDC ratings: Clearly defined voltage ratings help with proper application matching.
• Aluminum line and load terminals: Both terminal location and material are specified, giving installers another compatibility point to confirm.
• 50–60Hz frequency rating: Supports straightforward verification against the electrical system requirements.
  

Technical Specifications

• Catalog Number: KDC3400
  
• Product Name: Series C Complete Molded Case Circuit Breaker
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Series C
  
• Circuit Breaker Type: KDC
  
• Frame: K
  
• Circuit Breaker Frame Type: Complete Breaker
  
• Amperage Rating: 400A
  
• Number of Poles: Three
  
• Voltage Rating: 600VAC, 250VDC
  
• Trip Type: T186
  
• Interrupt Rating at 480VAC: 100 kAIC
  
• Interrupt Rating at 240VAC: 200 kAIC
  
• Frequency Rating: 50–60Hz
  
• Terminals: Line and Load
  
• Terminal Material: Aluminum
  
• Width: 5.5 in.
  
• Height: 5.5 in.
  
• Length/Depth: 4.1 in.
  
• Product Weight: 11.5 lbs.
  
• UPC: 786679341704
  
• Certification: UL Listed
  

Material Compliance and Certifications

The KDC3400 is UL Listed in accordance with the supplied manufacturer specifications. The breaker is also specified with aluminum terminal material for its line and load connections.

Where It Works Best

The KDC3400 is suited to compatible existing and legacy electrical equipment that specifically calls for a 400A, three-pole Series C Type KDC molded case circuit breaker with the corresponding K-frame and T186 trip configuration.

For replacement work, start with the identifying details. Confirm KDC3400, Type KDC, Series C, the K-frame, and T186 trip type. Then check the 400A rating, three-pole configuration, 600VAC/250VDC voltage ratings, and 50–60Hz frequency against the equipment requirements.