TJK636450 **Older Style** 450Amp Circuit Breaker

TJK636450 **Older Style** 450 Amp Circuit Breaker

The TJK636450 molded case circuit breaker is a dependable power distribution solution for your commercial and industrial electrical systems that require a 450-amp, 3-pole breaker with reliable thermal-magnetic protection. Built as part of the trusted TJK6 Q-Line series, this bolt-on circuit breaker features a non-interchangeable thermal magnetic trip unit with internal common trip functionality to help protect connected equipment and circuits from overloads and short circuits. Its older-style black-face configuration makes it especially useful for maintaining compatibility with existing installations where matching form and fit matter. Designed for demanding environments, the TJK636450 features load-side lugs for easier installation and is HACR-rated for heating, air conditioning, and refrigeration applications. With interrupting capacities rated at 22k @ 600VAC, 30k @ 480VAC, and 42k @ 240VAC, this breaker is built to last while supporting consistent operation in a wide range of electrical distribution systems.

Key Features and Benefits

• 450-amp molded case circuit breaker: Designed for commercial and industrial power distribution.
• 3-pole configuration: Supports three-phase electrical systems.
• Older style black face design: Helps maintain compatibility with existing equipment layouts.
• Bolt-on mounting: Provides secure installation within compatible panelboards and switchgear.
• Thermal magnetic trip unit: Delivers dependable overload and short-circuit protection.
• Internal common trip mechanism: Enhances coordinated circuit interruption.
• Includes load-side lugs: Adds installation convenience.
• HACR rated: Suitable for heating, ventilation, air conditioning, and refrigeration applications.
• Q-Line Type TJK6 breaker: Suitable for a variety of legacy electrical systems.
  

Technical Specifications

• Part Number: TJK636450
  
• Type: TJK6
  
• Breaker Style: Older Style Black Face
  
• Poles: 3
  
• Amperage Rating: 450A
  
• Voltage & A.I.C. Ratings:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Mounting Type: Bolt-On
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Function: Internal Common Trip
  
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: Rated for HVAC and refrigeration system applications.
• Manufacturing Standards: Manufactured for use in accordance with applicable molded case circuit breaker standards.
• Application Compatibility: Designed for installation in compatible commercial and industrial electrical distribution equipment.
  

Where It Works Best

• The TJK636450 circuit breaker is well-suited for commercial facilities, industrial plants, manufacturing equipment, distribution panels, HVAC systems, and other three-phase electrical applications that require a 450-amp breaker with thermal-magnetic protection. It is particularly useful in existing electrical systems where maintaining original equipment compatibility and physical fit is important.