THJK626450WL - 450Amp Circuit Breaker

THJK626450WL - 450 Amp Circuit Breaker

The THJK626450WL molded case circuit breaker is a 2-pole, 450-amp power distribution solution designed for applications requiring dependable circuit protection in your commercial and industrial electrical systems. Part of the THJK6 Series, this breaker features a non-interchangeable thermal-magnetic trip unit with internal common-trip functionality, helping protect your connected equipment from overloads and short circuits. Built with a cable-in/cable-out (lug-lug) configuration, the THJK626450WL includes both line-side and load-side lugs for straightforward installation and secure conductor termination. Designed for long service life, this circuit breaker is well-suited for switchboards, panelboards, distribution equipment, and other demanding power distribution environments where proper overcurrent protection is essential. Its compact molded-case construction allows it to fit in applications requiring a high-amperage breaker while maintaining reliable operation and system protection. Consistent with quality electrical equipment standards, this breaker is built to last and serves as a form, fit, and functional replacement in compatible installations.

Key Features and Benefits

• 450-amp Current Rating: 450-amp current rating for high-capacity electrical distribution systems.
• 2-Pole Configuration: 2-pole configuration for appropriate multi-phase circuit protection applications.
• THJK6 Series Design: THJK6 Series molded case circuit breaker design.
• Thermal Magnetic Protection: The thermal magnetic trip unit protects against overloads and short-circuit conditions.
• Non-Interchangeable Trip Unit: Non-interchangeable trip unit configuration.
• Internal Common Trip: The internal common trip mechanism helps ensure coordinated circuit interruption.
• Lug-Lug Construction: Cable-in/cable-out (lug-lug) construction for direct conductor connections.
• Included Lugs: Includes both line-side and load-side lugs.
• HACR Rated: HACR rated for use in heating, air conditioning, and refrigeration applications where applicable.
• Compact Molded Case Design: Compact molded case design supports installation in compatible electrical equipment.
• Built for Durability: Built for long-term durability in commercial and industrial environments.
  

Technical Specifications

• Part Number: THJK626450WL
  
• Series: THJK6
  
• Type: Molded Case Circuit Breaker
  
• Poles: 2
  
• Amperage Rating: 450A
  
• Trip Unit: Thermal Magnetic
  
• Trip Configuration: Internal Common Trip
  
• Trip Unit Style: Non-Interchangeable
  
• Connection Type: Cable-In/Cable-Out (Lug-Lug)
  
• Included Accessories: Line and Load-Side Lugs
  
• HACR Rating: Yes
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.
• Interrupting Rating:
  • 25kA @ 600VAC
  • 35kA @ 480VAC
  • 65kA @ 240VAC

Material Compliance and Certifications

• HACR Rated: HACR Rated.
• Industry Standards: Manufactured and tested to applicable industry standards for molded case circuit breakers.
• Electrical Distribution Applications: Designed for use in electrical distribution systems requiring overcurrent protection and fault interruption.
• Installation Verification: Verify all installation requirements, ratings, and code compliance before use.
  

Where It Works Best

• The THJK626450WL is commonly used in commercial buildings, industrial facilities, manufacturing plants, power distribution equipment, switchboards, panelboards, and large electrical systems that require a 450-amp, 2-pole molded-case circuit breaker. Its lug-lug design makes it suitable for installations where direct cable terminations are preferred, while the thermal-magnetic protection helps safeguard feeders and distribution circuits against damaging overcurrent conditions. This breaker is particularly useful in applications requiring the interrupting capacities of 25kA at 600VAC, 35kA at 480VAC, or 65kA at 240VAC, helping maintain electrical system protection in demanding operating environments.