TJK636450 - 450Amp Circuit Breaker

TJK636450 - 450 Amp Circuit Breaker

The TJK636450 molded case circuit breaker is designed for your dependable circuit protection in commercial and industrial electrical distribution systems where high-amperage performance and compatibility matter. Built as part of the trusted Q-Line family, this 3-pole breaker features a fixed thermal magnetic trip unit with internal common trip functionality to help you to protect connected equipment from overloads and short circuits. Its bolt-on mounting design provides a secure installation in compatible panelboards and switchgear applications, while the included load-side lugs help simplify setup and conductor termination.

Rated at 450 amperes, the TJK636450 is commonly used in demanding power distribution environments that require consistent protection for feeders, large HVAC systems, motor loads, and heavy-duty electrical infrastructure. The non-interchangeable trip configuration maintains fixed protection settings, making it a practical solution for facilities that need stable, application-specific circuit protection. With HACR certification and multiple interrupting ratings up to 600VAC, this breaker is built to last and intended for long-term use in existing electrical systems requiring a form, fit, and functional replacement.

Key Features and Benefits

• 450A Current Rating: 450A current rating for high-capacity commercial and industrial electrical systems.
• 3-Pole Configuration: 3-pole configuration designed for three-phase power distribution applications.
• Thermal Magnetic Trip Unit: Thermal magnetic trip unit provides protection against overloads and short circuits.
• Internal Common Trip Mechanism: Internal common trip mechanism helps disconnect all poles simultaneously during fault conditions.
• Bolt-On Mounting Style: Bolt-on mounting style supports secure installation in compatible equipment.
• Includes Load-Side Lugs: Includes load-side lugs for easier field wiring and installation.
• HACR Rated: HACR rated for heating, air conditioning, and refrigeration applications.
• Q-Line Series Design: Q-Line series design supports compatibility with existing legacy electrical systems.
• Molded Case Construction: Molded case construction helps protect internal components in demanding environments.
  

Technical Specifications

• Part Number: TJK636450
  
• Type: TJK6
  
• Product Category: Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperes: 450A
  
• Trip Unit: Thermal Magnetic
  
• Trip Configuration: Non-Interchangeable
  
• Mounting Style: Bolt-On
  
• Interrupting Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Certifications: HACR Rated
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in
  • Width: 8.25 in
  • Depth: 3.81 in

Material Compliance and Certifications

• HACR Rated: The TJK636450 circuit breaker is HACR rated for use in heating, ventilation, air conditioning, and refrigeration applications.
• Molded Case Construction: Its molded case construction is designed for durability in commercial and industrial electrical environments.
• Industry Standards: This breaker is manufactured to meet applicable industry standards for molded case circuit protection and is intended for use in properly matched electrical distribution equipment.
  

Where It Works Best

• The TJK636450 is well suited for commercial buildings, industrial facilities, manufacturing plants, and large-scale HVAC systems requiring dependable overcurrent protection at 450 amps.
• It is commonly installed in panelboards, switchboards, and distribution systems where maintaining compatibility with existing Q-Line equipment is important.
• This breaker is especially useful in facilities seeking a form, fit, and functional replacement for existing TJK6 series circuit breakers without modifying the original electrical setup.