KDC3250 - 250Amp Circuit Breaker

KDC3250 - 250Amp Circuit Breaker

For existing equipment that calls for a KDC3250, the useful question isn't simply whether you need 250 amps—it's whether the rest of the breaker matches the application. The KDC3250 is a 250-amp, three-pole Series C molded case circuit breaker supplied as a complete K-frame breaker with a T186 trip type. Comparing the KDC3250 catalog number, KDC type, K frame, T186 trip, voltage and interrupting ratings, terminals, frequency, and dimensions gives you a much clearer picture of whether it is suitable for the application.

Key Features and Benefits

• 250A, three-pole configuration: Identifies the breaker for equipment requiring this particular amperage and three-pole arrangement.
• Complete molded-case circuit breaker: The KDC3250 is specified as a complete breaker, an important distinction when determining exactly what the application requires.
• Series C, Type KDC: Provides clear identification for matching against existing equipment specifications and breaker markings.
• 600VAC and 250VDC ratings: Clearly defined voltage ratings make it easier to compare the breaker with the electrical system's requirements.
• Aluminum line and load terminals: Terminal position and material are specified, giving installers another useful compatibility point to verify.
• 50–60Hz frequency rating: Helps confirm suitability for equipment requiring this operating frequency.
  

Technical Specifications

• Catalog Number: KDC3250
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Series C
  
• Circuit Breaker Type: KDC
  
• Frame: K
  
• Frame Type: Complete Breaker
  
• Trip Type: T186
  
• Amperage Rating: 250A
  
• Number of Poles: 3
  
• Voltage Rating: 600VAC, 250VDC
  
• Interrupt Rating at 480VAC: 100 kAIC
  
• Interrupt Rating at 240VAC: 200 kAIC
  
• Frequency: 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: 786679026373
  
• Certification: UL Listed
  

Material Compliance and Certifications

The KDC3250 is UL Listed in accordance with the supplied manufacturer specifications. The product information also identifies aluminum as the terminal material for its line and load connections.

Where It Works Best

The KDC3250 250-amp circuit breaker is best suited for compatible existing and legacy electrical equipment that specifically requires its Series C, Type KDC, K-frame configuration. In this kind of replacement work, checking the complete specification is more useful than searching by amperage alone.

A good compatibility check starts with the 250A rating and three-pole configuration, then moves to the K frame and T186 trip type. The electrical system must also correspond with the breaker's 600VAC/250VDC ratings and required interrupting capacity. The KDC3250 is rated at 100 kAIC at 480 VAC and 200 kAIC at 240 VAC.