TJK626450 **Older Style** 450Amp Circuit Breaker

TJK626450 **Older Style** 450 Amp Circuit Breaker

Designed for dependable protection in your commercial and industrial electrical distribution systems, the TJK626450 molded case circuit breaker is a 2-pole, 450-amp breaker built for applications requiring high interrupting capacity and consistent circuit protection. This older-style black-face configuration is commonly used in legacy electrical systems where maintaining proper form, fit, and function is critical. Featuring a non-interchangeable thermal magnetic trip unit with internal common trip functionality, this breaker helps you protect connected equipment from overloads and short circuits while supporting reliable operation in demanding environments. Its bolt-on mounting design provides secure installation, and the included load-side lugs simplify wiring connections during service or replacement work. Built to last and engineered for compatibility within existing Q-Line systems, the TJK626450 remains a practical solution for maintaining established power distribution equipment.

Key Features and Benefits

• 450 Amp Molded Case Circuit Breaker: Designed for commercial and industrial power distribution applications requiring high-amperage circuit protection.
• 2-Pole Configuration: Supports multi-phase electrical applications where dependable interruption is required.
• Older Style Black Face Design: Commonly used for compatibility with existing installations and legacy electrical systems.
• Thermal Magnetic Trip Unit: Provides both overload and short-circuit protection for connected electrical equipment.
• Internal Common Trip Mechanism: Enhances coordinated circuit interruption during fault conditions.
• Bolt-On Mounting Style: Supports stable and secure installation within compatible electrical distribution equipment.
• Includes Load-Side Lugs: Simplifies field wiring connections during installation, maintenance, or replacement work.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications.
• Q-Line Compatible Configuration: Built for compatibility within existing Q-Line systems.
• Built for Long Service Life: Engineered for reliable operation in properly maintained electrical systems.
  

Technical Specifications

• Part Number: TJK626450
  
• Type: TJK6
  
• Circuit Breaker Style: Molded Case Circuit Breaker
  
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Poles: 2
  
• Amperage Rating: 450 Amps
  
• Voltage & A.I.C. Ratings:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Mounting Type: Bolt-On
  
• Face Style: Older Style Black Face
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications within commercial and industrial environments.
• Industry Standards: Manufactured for use in commercial and industrial electrical distribution systems and designed to meet applicable molded case circuit breaker construction and operational standards for its class and rating.
  

Where It Works Best

• The TJK626450 circuit breaker is commonly used in commercial buildings, industrial facilities, manufacturing environments, and large electrical distribution systems where high-amperage protection is required. It is particularly well-suited for maintaining or replacing breakers in existing Q-Line panelboards and switchgear that utilize older-style black-face configurations. This breaker also works well in HVAC-related systems thanks to its HACR rating, making it a practical choice for facilities managing large mechanical loads and motor-driven equipment.