KC34250 - 250 Amp Circuit Breaker

KC34250 - 250 Amp Circuit Breaker

When you're replacing a breaker in an existing panelboard, 250 amps is only the starting point. The KC34250 is a 3-pole, 250A Type KC molded-case circuit breaker with a thermal-magnetic configuration, intended for compatible I-Line panelboards. Rather than relying on amperage or appearance alone, compare the KC34250 part number, Type KC designation, pole count, AIC ratings, dimensions, and panelboard requirements with the existing installation.

Key Features and Benefits

• 250-amp, 3-pole design: Provides the amperage and pole configuration required for compatible three-pole applications.
• Thermal magnetic configuration: Matches equipment designed around this particular breaker configuration.
• Type KC molded case construction: Gives buyers an important identifier when checking an existing breaker or panelboard specification.
• Made for I-Line panelboard applications: Intended for compatible I-Line equipment where the KC34250 specifications are required.
• 60Hz, 40°C rating: Clearly defined operating specifications help make compatibility checks more straightforward.
  

Technical Specifications

• Part Number: KC34250
  
• Type: KC
  
• Breaker Type: Molded Case Circuit Breaker
  
• Trip Type: Thermal-Magnetic
  
• Amperage: 250A
  
• Number of Poles: 3
  
• AIC at 480VAC: 65k
  
• AIC at 240VAC: 100k
  
• Frequency: 60Hz
  
• Temperature Rating: 40°C
  
• Intended Application: I-Line Panelboards
  
• Width: 4.50 in.
  
• Height/Length: 10.50 in.
  
• Depth: 4.38 in.
  
• Overall Dimensions: 4.50"W x 10.50"L x 4.38"D
  
• Approx. Shipping Weight: 12.00 lbs.
  

Material Compliance and Certifications

Specific material-compliance details and certification listings were not included in the supplied specifications for the KC34250. UL, CSA, RoHS, REACH, or other certifications therefore should not be assumed based on the information available.

Where It Works Best

The KC34250 makes the most sense when you're maintaining a compatible I-Line panelboard or legacy electrical system that requires this particular Type KC breaker configuration—in replacement work, getting the details right matters. Two breakers can share the same amperage while differing in other specifications that affect suitability.

A good compatibility check begins with the KC34250 part number and Type KC designation. From there, confirm the 250A rating, three-pole configuration, thermal-magnetic configuration, 60Hz frequency, and 40°C rating. The interrupting capacity also requires attention: 65 kAIC at 480 VAC and 100 kAIC at 240 VAC.