KB3125 - 125Amp Circuit Breaker

KB3125 - 125Amp Circuit Breaker

When you're replacing a breaker in existing electrical equipment, the small details matter just as much as the amp rating. The KB3125 is a 125-amp, 3-pole Type KB thermal magnetic circuit breaker with an interchangeable trip unit, designed for compatible applications where this particular form, fit, and electrical configuration are required.

Key Features and Benefits

• 125A, 3-pole configuration: Matches applications calling for a three-pole breaker with a 125-amp rating.
• Thermal-magnetic operation: Provides the thermal-magnetic trip configuration specified for the KB3125.
• Interchangeable trip unit: An important feature when matching the breaker to the configuration required by existing equipment.
• Type KB design: Helps narrow down the correct breaker when maintaining compatible equipment that requires this specific type.
• Load-side terminals included: Supplied with the specified load-side terminals.
• 40°C rated: Provides another key specification to confirm when determining suitability for the intended application.
  

Technical Specifications

• Part Number: KB3125
  
• Type: KB
  
• Product Type: Circuit Breaker
  
• Trip Type: Thermal Magnetic
  
• Trip Unit: Interchangeable
  
• Amperage: 125A
  
• Poles: 3
  
• AIC Rating at 600VAC: 14k
  
• AIC Rating at 480VAC: 22k
  
• AIC Rating at 240VAC: 25k
  
• Temperature Rating: 40°C
  
• Height: 10.00 in.
  
• Width: 4.13 in.
  
• Depth: 4.13 in.
  
• Dimensions: 4.13"W x 10.00"L x 4.13"D
  
• Approximate Shipping Weight: 14.00 lbs.
  
• Terminals: Load-Side Terminals Included
  

Material Compliance and Certifications

Specific material-compliance information and certification listings were not provided in the available specifications for the KB3125. UL, CSA, RoHS, REACH, or other certifications and compliance designations should not be assumed without supporting documentation.

Where It Works Best

The KB3125 is best suited for compatible legacy electrical systems that require a 125A, 3-pole Type KB thermal-magnetic circuit breaker with an interchangeable trip unit. It is particularly relevant to maintenance and replacement projects where keeping the required physical configuration and electrical characteristics is the priority.

A 125-amp rating alone doesn't establish compatibility. Before selecting the KB3125 as a functional replacement, compare the part number, KB type, three-pole configuration, interchangeable trip unit, voltage and AIC ratings, 40°C rating, dimensions, and load-side terminal requirements with the existing breaker and equipment specifications.