KT3350T - 350Amp Trip Unit

KT3350T - 350Amp Trip Unit

The KT3350T is a 350-amp, three-pole T266 trip unit made for compatible Series C K-frame molded case circuit breaker applications. If you're replacing one in equipment already in service, make this distinction right away: this is the trip unit, not the complete circuit breaker. When those details match the breaker assembly and application requirements, the KT3350T can be considered for form, fit, and functional replacement in compatible legacy equipment. Properly selected, installed, and used within its specified application, it's built to last in the service it was designed for.

Key Features and Benefits

• 350A amperage rating for applications specified for a 350-amp trip unit.
• Three-pole configuration for compatible three-pole breaker assemblies.
• T266 trip type provides a key reference when matching an existing trip unit.
• K-frame size helps narrow compatibility to the appropriate breaker assembly.
• The Series C designation provides another key point to verify during replacement.
• Trip unit accessory rather than a complete molded case circuit breaker.
  

Technical Specifications

• Catalog Number: KT3350T
  
• Product Type: Molded Case Circuit Breaker Accessory
  
• Type: Trip Unit
  
• Trip Type: T266
  
• Amperage Rating: 350A
  
• Number of Poles: 3
  
• Frame Size: K Frame
  
• Series: Series C
  
• Length/Depth: 7 in.
  
• Width: 4.4 in.
  
• Height: 5.4 in.
  
• Weight: 1.9 lb
  
• UPC: 786679266083
  
• Certification: UL Listed
  

Material Compliance and Certifications

The manufacturer information supplied for the KT3350T identifies the trip unit as UL Listed. No specific RoHS, REACH, or other material-compliance information was provided, so do not assume those certifications or declarations.

Where It Works Best

The KT3350T makes the most sense in existing Series C molded case circuit breaker equipment that specifically calls for a 350A, three-pole T266 trip unit with a K-frame configuration. That's especially useful when you're maintaining legacy equipment and need a replacement component that matches the required form, fit, and function.

When checking suitability, start with the catalog number, then work through the 350A rating, T266 designation, three-pole configuration, K-frame, Series C identification, and dimensions. Together, those details provide a much clearer compatibility check than amperage alone.