TJK636450WL **Older Style** 450Amp Circuit Breaker

TJK636450WL **Older Style** 450 Amp Circuit Breaker

The TJK636450WL molded case circuit breaker is a 3-pole, 450-amp unit designed for you to use in commercial and industrial electrical distribution systems. Featuring the older style black face design, this breaker is commonly used as a direct replacement in existing equipment where matching configuration and compatibility matter. The thermal magnetic trip unit responds to both overloads and short circuits, helping protect electrical systems and connected equipment during normal operation and fault conditions.

Built with a molded case housing and internal common trip mechanism, the TJK636450WL is intended for three-phase applications operating up to 600VAC. This model includes both line-side and load-side lugs in a cable-in/cable-out configuration, making it suitable for installations where lug connections are required on both ends. Its HACR rating also allows use in heating, ventilation, air conditioning, and refrigeration equipment applications. Designed for long service life, this breaker remains a practical choice for maintaining existing power distribution systems without altering original equipment layouts.

Key Features and Benefits

• 450A molded case circuit breaker: Designed for commercial and industrial electrical distribution systems.
• 3-pole configuration: Intended for use in three-phase systems.
• Older style black face: Maintains compatibility with existing equipment installations.
• Thermal magnetic trip unit: Provides overload and short-circuit protection during normal operation and fault conditions.
• Internal common trip design: Supports coordinated tripping across all poles.
• Cable-in/cable-out lug-lug connection style: Suitable for installations requiring lug connections on both ends.
• Includes line and load-side lugs: Provides connection capability for incoming and outgoing cables.
• HACR rated: Approved for HVAC and refrigeration equipment applications.
• Designed for commercial and industrial electrical systems: Suitable for demanding power distribution environments.
• Built for long-term service: Maintains practicality for existing power distribution systems without altering original equipment layouts.
  

Technical Specifications

• Part Number: TJK636450WL
  
• Type: TJK6
  
• Poles: 3
  
• Amperage Rating: 450 Amps
  
• Voltage Rating: Up to 600VAC
  
• Interrupting Rating:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Trip Unit: Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Connection Type: Cable-in/Cable-out (Lug-Lug)
  
• Included: Line and Load-Side Lugs
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 10.13 in
  • Width: 8.25 in
  • Depth: 3.81 in

Material Compliance and Certifications

• HACR Rated: Approved for heating, ventilation, air conditioning, and refrigeration equipment applications.
• Commercial and Industrial Use: Intended for use in properly rated commercial and industrial electrical systems.
• Molded Case Construction: Designed for standard electrical distribution applications.
• Type Compatibility: Suitable for installations requiring Type TJK6 compatibility.
  

Where It Works Best

• The TJK636450WL is commonly found in commercial facilities, industrial buildings, electrical distribution panels, switchboards, HVAC equipment systems, manufacturing environments, and existing legacy electrical systems using Type TJK6 breakers. Its form, fit, and function make it well suited for replacement applications where maintaining compatibility with installed equipment is important.