THLC434350 - 350Amp Circuit Breaker

THLC434350 - 350 Amp Circuit Breaker

The THLC434350 is a 350-amp, 3-pole current limiting circuit breaker designed for use in your commercial and industrial electrical distribution systems where high interrupting capacity and dependable circuit protection are required. Built with a non-interchangeable trip unit, this unfused breaker helps protect electrical equipment and conductors from damage caused by overloads and short circuits while remaining compatible with systems designed for Type THLC4 circuit breakers. Its current-limiting design helps reduce the effects of fault currents by minimizing the energy that flows through the circuit during a fault. The breaker includes load-side lugs for convenient installation and is engineered for long service life in demanding environments. Whether you use it as a replacement component or to maintain existing power distribution equipment, the THLC434350 provides the form, fit, and function required for the continued operation of compatible systems.

Key Features and Benefits

• 350-amp current rating: Suitable for high-capacity power distribution applications.
• 3-pole configuration: For three-phase electrical systems.
• Current-limiting design: Helps reduce fault energy during short-circuit events.
• Non-interchangeable trip unit: Maintains consistent protection settings.
• Unfused construction: Simplifies coordination within compatible systems.
• Includes load-side lugs: For installation convenience.
• High interrupting capacity: Supports applications with elevated available fault current levels.
• Designed for long-term durability: Supports dependable operation in commercial and industrial environments.
• Suitable as a form, fit, and functional replacement: For compatible Type THLC4 installations.
  

Technical Specifications

• Part Number: THLC434350
  
• Type: THLC4
  
• Current Rating: 350 Amps
  
• Poles: 3
  
• Interrupting Rating: 150kA @ 480VAC
  
• Interrupting Rating: 200kA @ 240VAC
  
• Construction: Unfused
  
• Trip Unit: Non-Interchangeable
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 13.06 in.
  • Width: 5.72 in.
  • Depth: 4.88 in.

Material Compliance and Certifications

• Industry Standards: The THLC434350 is manufactured and rated for use in electrical distribution applications requiring compliance with applicable industry standards and equipment ratings.
• Installation Requirements: Users should verify installation requirements, system compatibility, and local code compliance before installation. Always follow manufacturer specifications and applicable electrical safety regulations.
  

Where It Works Best

• The THLC434350 is well-suited for commercial facilities, industrial plants, manufacturing operations, distribution equipment, switchgear, motor control applications, and other three-phase electrical systems requiring a 350-amp current-limiting circuit breaker. Its high interrupting ratings make it particularly appropriate for installations with significant available fault current, helping maintain protection for critical power distribution equipment while preserving compatibility with existing Type THLC4 systems.