TJK436350WL - 350Amp Circuit Breaker

TJK436350WL - 350 Amp Circuit Breaker

The TJK436350WL molded case circuit breaker is designed for your commercial and industrial power distribution systems that require dependable overcurrent protection in higher-amperage applications. Built as part of the trusted TJK4 Q-Line series, this 3-pole breaker features a 350-amp thermal-magnetic trip unit with an internal common trip mechanism for coordinated circuit interruption during overloads or short circuits. Its cable-in/cable-out lug-lug configuration allows for straightforward installation in compatible electrical systems, making it a practical form, fit, and functional replacement for existing equipment.

This breaker is HACR-rated and engineered for use in demanding electrical environments where consistent protection and long-term durability are essential. The included line- and load-side lugs help you to simplify setup, while the non-interchangeable trip unit maintains fixed protection settings suited for applications requiring stable circuit management. With interrupting capacities rated at 22kA at 600VAC, 30kA at 480VAC, and 42kA at 240VAC, the TJK436350WL is built to last. It supports reliable operation across a wide range of distribution systems, motor control applications, and HVAC equipment installations.

Key Features and Benefits

• 350 Amp Current Rating: Designed for commercial and industrial electrical distribution systems requiring dependable 350 amp protection.
• 3-Pole Configuration: Built for three-phase power applications requiring coordinated circuit interruption.
• Thermal Magnetic Trip Unit: Helps protect against overloads and short circuits using dependable thermal magnetic protection technology.
• Internal Common Trip Mechanism: Disconnects all poles simultaneously during fault conditions to support coordinated system protection.
• Q-Line Type TJK4 Design: Provides compatibility with select legacy electrical systems and installations.
• Cable-In/Cable-Out (Lug-Lug) Construction: Supports direct cable termination for practical installation flexibility.
• Includes Line and Load-Side Lugs: Helps simplify installation and setup in compatible electrical systems.
• HACR Rated: Suitable for use with heating, air conditioning, and refrigeration equipment applications.
• Compact Molded Case Design: Helps conserve panel space while supporting dependable circuit protection.
  

Technical Specifications

• Part Number: TJK436350WL
  
• Type: TJK4
  
• Product Category: Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperage: 350A
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Configuration: Cable-In/Cable-Out (Lug-Lug)
  
• A.I.C. Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• HACR Rated: Yes
  
• Included Accessories: Line and Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in
  • Width: 8.25 in
  • Depth: 3.81 in

Material Compliance and Certifications

• Commercial and Industrial Compliance: The TJK436350WL circuit breaker is manufactured for use in commercial and industrial electrical systems that require tested overcurrent protection and compliance with applicable power distribution equipment standards.
• HACR Rating: Its HACR rating supports installation in approved HVAC and refrigeration applications. Always confirm local code requirements and equipment compatibility before installation.
  

Where It Works Best

• The TJK436350WL is well-suited for commercial buildings and facility power distribution, industrial control panels and switchgear applications, HVAC and refrigeration equipment circuits, manufacturing facilities and processing environments, three-phase electrical systems requiring 350 amp protection, and maintenance replacements for compatible legacy Q-Line breaker installations. Its combination of thermal magnetic protection, lug-lug connectivity, and high interrupting capacity makes it a dependable choice for maintaining existing electrical infrastructure while ensuring safe, consistent system operation.