TKMA836450 - 450Amp Circuit Breaker

TKMA836450 - 450 Amp Circuit Breaker

The TKMA836450 molded case circuit breaker is designed for your industrial power distribution systems that require dependable overcurrent protection in demanding commercial and industrial environments. Built with a 450 amp rating and a 3-pole configuration, this bolt-on circuit breaker features an interchangeable thermal magnetic trip unit with internal common trip functionality to help you protect connected equipment from overloads and short circuits. Its HACR rating makes it suitable for heating, air conditioning, and refrigeration applications, while the included load-side lugs help simplify installation and replacement in compatible systems. Designed for form, fit, and functional compatibility in existing electrical setups, the TKMA836450 is commonly used in switchboards, panelboards, motor control centers, and other heavy-duty distribution equipment where consistent protection and long service life matter.

Key Features and Benefits

• 450 amp industrial molded case circuit breaker: Built for commercial and industrial power distribution systems requiring dependable overcurrent protection.
• 3-pole configuration: Designed for use in three-phase electrical systems.
• Thermal magnetic trip unit: Helps provide overload and short-circuit protection for connected equipment.
• Interchangeable trip unit design: Supports maintenance and system compatibility in existing electrical setups.
• Internal common trip mechanism: Enhances coordinated circuit interruption during fault conditions.
• Bolt-on mounting style: Provides secure installation in compatible equipment.
• HACR rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• Includes load-side lugs: Helps simplify installation and replacement.
• Designed for commercial and industrial power distribution systems: Commonly used in switchboards, panelboards, motor control centers, and heavy-duty distribution equipment.
• Built for long-term operation: Intended for demanding electrical environments where consistent protection and long service life matter.
  

Technical Specifications

• Part Number: TKMA836450
  
• Type: TKM8
  
• Poles: 3
  
• Amperes: 450A
  
• A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• Trip Unit: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Trip Function: Internal Common Trip
  
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.

Material Compliance and Certifications

• HACR Rated: The TKMA836450 circuit breaker is HACR rated for use in heating, air conditioning, and refrigeration applications.
• Installation and Compliance: It is engineered for use in accordance with applicable industrial and commercial electrical system requirements and is intended for installation by qualified electrical professionals following local electrical codes and manufacturer specifications.
  

Where It Works Best

• The TKMA836450 is well-suited for industrial facilities, commercial buildings, manufacturing operations, and large-scale electrical distribution systems that require a 450 amp, 3-pole molded case circuit breaker. It is commonly applied in switchgear, panelboards, motor control centers, HVAC systems, and feeder circuit protection where dependable circuit interruption and compatibility with existing equipment are important. Its bolt-on design and interchangeable thermal magnetic trip unit also make it a practical choice for maintaining and servicing established electrical infrastructure.