KB3250 - 250Amp Circuit Breaker

KB3250 - 250Amp Circuit Breaker

Replacing your breaker in existing equipment can get surprisingly specific. A 250-amp rating may be the first thing you look for, but it's certainly not the only detail that matters. The KB3250 is a 3-pole, Type KB thermal-magnetic circuit breaker with an interchangeable trip unit, a 40°C rating, and load-side terminals included. For maintenance teams, electricians, and facilities working with compatible legacy equipment, those details provide a practical way to determine whether this breaker has the required form, fit, and electrical characteristics for the job.

Key Features and Benefits

• 250A, 3-pole configuration — clearly defined ratings make it easier to compare the breaker with the existing application.
• Thermal-magnetic circuit breaker — provides the specified trip design required for compatible equipment.
• Interchangeable trip unit — an important feature to verify when matching an existing Type KB breaker.
• Type KB construction — helps narrow down compatibility when maintaining legacy electrical equipment.
• 40°C rated — another application-specific detail that should be matched with equipment requirements.
• Load-side terminals included — supplied as part of the breaker configuration.
  

Technical Specifications

• Part Number: KB3250
  
• Type: KB
  
• Product Type: Circuit Breaker
  
• Trip Type: Thermal Magnetic
  
• Trip Unit: Interchangeable
  
• Amperage: 250A
  
• Poles: 3
  
• AIC Rating at 600VAC: 14k
  
• AIC Rating at 480VAC: 22k
  
• AIC Rating at 240VAC: 25k
  
• Temperature Rating: 40°C
  
• Height/Length: 10.00 in.
  
• Width: 4.13 in.
  
• Depth: 4.13 in.
  
• Dimensions: 4.13"W x 10.00"L x 4.13"D
  
• Approx. Shipping Weight: 14.00 lbs.
  
• Terminals: Load-Side Terminals Included
  

Material Compliance and Certifications

Specific certification and material compliance details were not provided for the KB3250. UL, CSA, RoHS, REACH, or other certification status therefore should not be inferred from the product specifications alone. If a particular listing or compliance standard is required for your application, verify the markings on the actual breaker and consult the relevant product and equipment documentation.

Where It Works Best

The KB3250 250-amp circuit breaker is intended for situations where an existing electrical system requires the appropriate Type KB form, 3-pole configuration, 250A rating, thermal-magnetic design, and interchangeable trip unit. This makes it particularly relevant when maintaining compatible legacy equipment and the objective is to preserve the required form, fit, and function.