TKMA826450 - 450Amp Circuit Breaker

TKMA826450 - 450 Amp Circuit Breaker

The TKMA826450 circuit breaker is made for heavy-duty electrical distribution systems where reliable protection is important to daily operation. Rated at 450 amps and featuring a 2-pole design, this molded-case circuit breaker is often used in commercial buildings, industrial facilities, and large HVAC applications that require dependable overcurrent protection.

This breaker uses a thermal magnetic trip unit to help you to protect equipment from overloads and short circuits. The interchangeable trip unit design can also help simplify maintenance in compatible systems. An internal common trip mechanism allows both poles to trip together during a fault condition, helping protect connected equipment and circuits.

The bolt-on mounting style provides a secure fit in the proper equipment, while the included load-side lugs make installation easier. Its HACR rating makes it suitable for heating, air conditioning, and refrigeration applications where steady, reliable operation matters.

Built for long service life in demanding environments, the TKMA826450 is commonly used as a form, fit, and functional replacement in existing TKM8 systems where maintaining compatibility is important.

Key Features and Benefits

• 450 Amp molded case circuit breaker: Designed for heavy-duty electrical distribution systems requiring dependable overcurrent protection.
• 2-pole configuration: Supports compatible commercial and industrial electrical applications.
• Thermal magnetic trip unit: Helps protect equipment from overloads and short circuits.
• Interchangeable trip unit design: Can help simplify maintenance in compatible systems.
• Internal common trip operation: Allows both poles to trip together during a fault condition, helping protect connected equipment and circuits.
• Bolt-on mounting style: Provides a secure fit in the proper equipment.
• Includes load-side lugs: Helps make installation easier.
• HACR rated: Suitable for heating, air conditioning, and refrigeration applications where steady, reliable operation matters.
• Designed for commercial and industrial power distribution systems: Commonly used in demanding electrical environments.
• Compatible with existing TKM8 applications: Suitable as a form, fit, and functional replacement where maintaining compatibility is important.
  

Technical Specifications

• Part Number: TKMA826450
  
• Type: TKM8
  
• Poles: 2
  
• Amperes: 450A
  
• A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• Mounting Type: Bolt-On
  
• Trip Unit: Interchangeable Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Included: Load-Side Lugs
  
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.

Material Compliance and Certifications

• HACR Rated: Suitable for HVAC and refrigeration applications requiring dependable operation.
• Commercial and Industrial Applications: Manufactured for use in compatible molded case circuit breaker systems used in commercial and industrial electrical distribution applications.
  

Where It Works Best

• The TKMA826450 is commonly used in switchboards, panelboards, motor control centers, HVAC equipment, and industrial power distribution systems. It is a practical solution for facilities that need a compatible replacement breaker for existing TKM8 equipment without major system changes.