TKMA836400 - 400Amp Circuit Breaker

TKMA836400 - 400 Amp Circuit Breaker

The TKMA836400 molded case circuit breaker is designed for your commercial and industrial electrical systems that need solid overcurrent protection in a dependable bolt-on design. With a 400 amp rating and 3-pole configuration, this breaker is commonly found in switchboards, panelboards, HVAC equipment, and power distribution systems handling higher electrical loads.

This model uses a thermal magnetic trip unit to help protect your equipment from overloads and short circuits. The internal common trip mechanism allows all poles to trip together when needed, helping improve system protection during fault conditions. Because it uses an interchangeable trip unit, the breaker is also a practical fit for maintenance work and replacement projects involving compatible TKM8 equipment.

Load-side lugs are included, helping reduce installation time in the field. The breaker is HACR rated for heating, air conditioning, and refrigeration applications, making it a good fit for facilities that rely on large HVAC systems and motor-driven equipment. Built for long-term service, the TKMA836400 is intended for form, fit, and functional compatibility in existing electrical systems.

Key Features and Benefits

• 400 amp current rating: Designed for higher electrical loads in commercial and industrial systems.
• 3-pole molded case circuit breaker: Commonly used in switchboards, panelboards, HVAC equipment, and power distribution systems.
• Bolt-on mounting style: Provides dependable installation in compatible electrical systems.
• Thermal magnetic trip protection: Helps protect equipment from overloads and short circuits.
• Internal common trip mechanism: Allows all poles to trip together when needed to help improve system protection during fault conditions.
• Interchangeable trip unit design: Makes the breaker a practical fit for maintenance work and replacement projects involving compatible TKM8 equipment.
• HACR rated: Suitable for heating, air conditioning, and refrigeration applications.
• Includes load-side lugs: Helps reduce installation time in the field.
• Built for long service life: Intended for commercial and industrial systems operating in demanding environments.
  

Technical Specifications

• Part Number: TKMA836400
  
• Type: TKM8
  
• Poles: 3
  
• Amperage: 400A
  
• Mounting: Bolt-On
  
• Trip Unit: Thermal Magnetic
  
• Trip Type: 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: Load-Side Lugs
  
• HACR Rated: Yes
  

Material Compliance and Certifications

• HACR Rated: Approved for heating, air conditioning, and refrigeration applications.
• Commercial and Industrial Use: Intended for commercial and industrial electrical distribution applications requiring molded case overcurrent protection.
• System Compatibility: Designed for use in systems requiring molded case overcurrent protection and compatibility with existing TKM8 equipment.
  

Where It Works Best

• The TKMA836400 is commonly used in industrial plants, commercial facilities, HVAC systems, motor control centers, and large electrical distribution setups. It works well in applications where maintaining compatibility with existing TKM8 equipment is important, especially during repairs, retrofits, or equipment replacement projects.