TKMA826400 - 400Amp Circuit Breaker

TKMA826400 - 400 Amp Circuit Breaker

The TKMA826400 TKM8 molded case circuit breaker is designed for your commercial and industrial electrical distribution systems that require dependable overcurrent and short-circuit protection. Built with a thermal magnetic trip unit and internal common trip functionality, this 2-pole, 400-amp breaker is well-suited for protecting feeders, large equipment, motor circuits, and HVAC applications in demanding environments. Its bolt-on mounting configuration provides a secure installation, while the included load-side lugs help simplify wiring during maintenance or replacement projects. With HACR certification and strong interrupting ratings at multiple voltage levels, the TKMA826400 is built to last and intended to provide consistent protection in legacy and existing power distribution systems where proper fit, compatibility, and reliable operation matter most.

Key Features and Benefits

• 400 Amp, 2-pole industrial molded case circuit breaker: TKM8 type breaker designed for commercial and industrial power systems.
• Thermal Magnetic Protection: Thermal magnetic trip unit helps provide dependable overload and short-circuit protection.
• Internal Common Trip: Internal common trip mechanism enhances circuit safety during fault conditions.
• Bolt-On Mounting Design: Bolt-on mounting design supports secure panel installation.
• HACR Rated: HACR rated for heating, air conditioning, and refrigeration applications.
• Includes Load-Side Lugs: Includes load-side lugs for easier field connection.
• Designed for Industrial Applications: Suitable for protecting feeders, distribution panels, and large electrical equipment.
• Compact Footprint: Compact footprint helps accommodate existing electrical layouts and replacement projects.
  

Technical Specifications

• Part Number: TKMA826400
  
• Type: TKM8
  
• Poles: 2
  
• Amperage: 400A
  
• Interrupting Capacity:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Trip Unit: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Trip Function: Internal Common Trip
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.

Material Compliance and Certifications

• HACR Rated: Manufactured for use in commercial and industrial electrical distribution applications.
• Industry Standards: Designed to meet applicable industry standards for molded case circuit breaker construction and operation.
  

Where It Works Best

• The TKMA826400 circuit breaker is commonly used in industrial facilities, manufacturing plants, commercial buildings, mechanical systems, and large HVAC installations where higher ampacity protection is required. It is especially useful for maintenance teams and contractors seeking a form, fit, and functional replacement for existing TKM8 breaker installations. Its combination of high interrupting capacity, bolt-on mounting, and thermal magnetic protection makes it a practical choice for switchboards, panelboards, motor control systems, and heavy-duty electrical distribution equipment.