THJK626450 - 450Amp Circuit Breaker

THJK626450 - 450 Amp Circuit Breaker

The THJK626450 is a 2-pole, 450-amp molded case circuit breaker designed for use in your commercial, industrial, and heavy-duty electrical distribution systems where dependable overcurrent protection is required. Built as part of the THJK6 Q-Line family, this bolt-on circuit breaker features a non-interchangeable thermal-magnetic trip unit with internal common-trip functionality, helping protect your conductors and connected equipment from overloads and short circuits. Designed for long service life, the THJK626450 provides a form, fit, and function replacement solution for compatible installations while maintaining the electrical ratings required for demanding applications.

This breaker is HACR rated and includes load-side lugs for installation convenience. With interrupting capacities of 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, it is suitable for a wide range of power distribution equipment, switchboards, panelboards, and industrial systems where high fault-current protection is essential. Its bolt-on mounting design helps ensure a secure connection, making it a practical choice for maintaining and servicing existing electrical infrastructure.

Key Features and Benefits

• 450-amp continuous current rating
• 2-pole configuration for compatible AC power distribution systems
• THJK6 series molded case circuit breaker
• The thermal magnetic trip unit provides overload and short-circuit protection
• Internal common trip design for coordinated pole operation
• Bolt-on mounting for secure installation
• HACR rated for heating, air conditioning, and refrigeration applications
• Includes load-side lugs
• Designed for long-term durability in commercial and industrial environments
• Suitable as a form, fit, and function replacement in compatible equipment

Technical Specifications

• Part Number: THJK626450
  
• Type: THJK6
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Mounting: Bolt-On
  
• Poles: 2
  
• Amperage Rating: 450A
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Trip Function: Internal Common Trip
  
• A.I.C. Rating @ 240VAC: 65kA
  
• A.I.C. Rating @ 480VAC: 35kA
  
• A.I.C. Rating @ 600VAC: 25kA
  
• Height: 10.13 in.
  
• Width: 8.25 in.
  
• Depth: 3.81 in.
  
• Included Accessories: Load-Side Lugs
  
• Rating: HACR Rated
  

Material Compliance and Certifications

• HACR: HACR (Heating, Air Conditioning, and Refrigeration) Rated
• Electrical System Requirements: Manufactured for use in accordance with applicable electrical system requirements and equipment specifications
• Compatibility Verification: Verify compatibility, voltage requirements, interrupting ratings, and installation requirements before use
• Qualified Installation: Intended for installation and service by qualified electrical professionals following applicable codes and standards

Where It Works Best

• The THJK626450 is commonly used in:
  • Commercial buildings and facilities
  • Industrial manufacturing environments
  • Electrical distribution equipment
  • Switchboards and panelboards
  • HVAC and refrigeration systems requiring HACR-rated protection
  • Large motor and equipment protection applications
  • Infrastructure and facility maintenance projects involving compatible THJK6 breaker installations
• For facilities that require a 450A, 2-pole bolt-on molded-case circuit breaker with thermal-magnetic protection and high interrupting capacity, the THJK626450 provides a dependable solution designed to support the safe and effective operation of electrical distribution systems.