KB3150 - 150Amp Circuit Breaker

KB3150 - 150Amp Circuit Breaker

Looking for a KB3150 circuit breaker usually means you already have a pretty specific application in mind. This is a 150-amp, 3-pole Type KB thermal-magnetic breaker with an interchangeable trip unit, intended for compatible electrical equipment that requires these characteristics. Those details are worth checking one by one when you're working with legacy equipment. A breaker that looks right—or simply has the right amperage—isn't necessarily the right match. When the KB3150 part number, dimensions, electrical ratings, trip configuration, and terminal requirements correspond with the existing application, it can provide the form, fit, and function needed for replacement work.

Key Features and Benefits

• 150-amp, 3-pole configuration: Designed for compatible applications that require this specific amperage and pole arrangement.
• Thermal magnetic breaker: Uses the thermal magnetic trip design specified for the KB3150.
• Interchangeable trip unit: A key detail to check against the breaker and equipment already in service.
• Type KB configuration: Helps identify the correct form and configuration for compatible legacy equipment.
• Load-side terminals included: One less specification to overlook when comparing the breaker with the requirements of the existing installation.
• 40°C rated: Another defined operating characteristic to verify for the intended application.
  

Technical Specifications

• Part Number: KB3150
  
• Type: KB
  
• Product Type: Circuit Breaker
  
• Amperage: 150A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic
  
• Trip Unit: Interchangeable
  
• AIC at 600VAC: 14k
  
• AIC at 480VAC: 22k
  
• AIC at 240VAC: 25k
  
• Temperature Rating: 40°C
  
• Width: 4.13 in.
  
• Height/Length: 10.00 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

If your installation has a specific certification or material-compliance requirement, this is an area to verify rather than assume. The available information for the KB3150 does not specify material-compliance details or certification listings.

Where It Works Best

The KB3150 150A 3-pole circuit breaker is most relevant when maintaining compatible legacy electrical equipment that requires the same Type KB form, physical dimensions, electrical ratings, and thermal-magnetic configuration.

For replacement work, start with the KB3150 part number, but don't stop there. Check the 150A rating and three-pole configuration, then compare the voltage and AIC ratings. The 40°C rating, interchangeable trip unit, physical dimensions, and load-side terminal requirements should also line up with the equipment specifications.