TKMA826300 - 300Amp Circuit Breaker

TKMA826300 - 300 Amp Circuit Breaker

The TKMA826300 TKM8 molded case circuit breaker is designed for your commercial and industrial electrical distribution systems that require dependable overcurrent protection in higher-amperage applications. Built with a thermal magnetic trip unit and internal common trip functionality, this 2-pole, 300-amp breaker helps protect connected equipment and electrical infrastructure from overloads and short circuits while maintaining compatibility with existing TKM8 systems. Its bolt-on mounting configuration supports secure installation in switchboards, panelboards, and industrial distribution equipment, making it a practical form, fit, and functional replacement option for your maintaining legacy electrical systems. The included load-side lugs help simplify installation, while the HACR rating supports use in heating, air conditioning, and refrigeration applications where appropriate. Built to last and engineered for consistent operation, the TKMA826300 is suited for demanding electrical environments where reliable circuit protection matters every day.

Key Features and Benefits

• 300A Industrial Molded Case Circuit Breaker: Designed for commercial and industrial power distribution systems requiring dependable overcurrent protection.
• 2-Pole Configuration: Designed for compatible TKM8 electrical equipment and applications requiring matching specifications.
• Thermal Magnetic Trip Unit: Protects against overloads and short circuits while supporting reliable system protection.
• Internal Common Trip Mechanism: Enhances coordinated circuit interruption for connected electrical systems.
• Bolt-On Mounting Style: Allows secure installation in designated switchboards, panelboards, and industrial assemblies.
• HACR Rated: Suitable for compatible heating, air conditioning, and refrigeration applications where appropriate.
• Includes Load-Side Lugs: Helps simplify installation and supports maintenance or replacement applications.
• Built for Long-Term Service: Designed for dependable operation in demanding electrical environments and legacy systems.
  

Technical Specifications

• Part Number: TKMA826300
  
• Type: TKM8
  
• Poles: 2
  
• Amperage: 300A
  
• Trip Unit: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Trip Function: Internal Common Trip
  
• A.I.C. Rating:
  • 22k @ 600VAC
  • 30k @ 480VAC
  • 42k @ 240VAC
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.
• Included Accessories: Load-Side Lugs
  
• Application Rating: HACR Rated
  

Material Compliance and Certifications

• HACR Rated: Approved for compatible HVAC and refrigeration system applications.
• Commercial and Industrial Use: Manufactured for use in commercial and industrial electrical distribution systems.
• Performance Standards: Designed to meet applicable molded case circuit breaker performance standards for its class and ratings.
• Overcurrent Protection Applications: Suitable for installations requiring properly rated overcurrent protection equipment.
  

Where It Works Best

• The TKMA826300 is commonly used in industrial facilities, manufacturing operations, commercial buildings, mechanical equipment rooms, and large-scale electrical distribution systems requiring 300-amp overcurrent protection. It works well in applications involving motor loads, HVAC equipment, panelboards, switchgear, and other power distribution assemblies where a compatible TKM8 breaker is required for system continuity and proper equipment fitment. Its bolt-on design and interchangeable thermal-magnetic trip unit make it especially useful for maintaining or servicing existing electrical infrastructure.