TKMA836400WL - 400Amp Circuit Breaker

TKMA836400WL - 400 Amp Circuit Breaker

When your dependable circuit protection matters, the TKMA836400WL molded case circuit breaker is built to handle the job. Designed for commercial and industrial power distribution systems, this 400-amp, 3-pole breaker delivers the protection needed for your demanding electrical applications while maintaining compatibility with existing TKM8 installations. Its cable-in/cable-out lug-lug configuration helps simplify installation, making it a practical choice for maintenance teams, contractors, and facility operators working with established switchgear and distribution equipment.

Equipped with an interchangeable thermal magnetic trip unit and internal common trip mechanism, the TKMA836400WL responds to overloads and short circuits to help protect connected electrical equipment and systems. The HACR rating also makes it a solid fit for HVAC and refrigeration applications where reliable performance is essential day in and day out. Built with long-term durability in mind, this breaker is designed to keep industrial and commercial systems operating smoothly in tough environments without unnecessary complexity.

Key Features and Benefits

• 400 amp molded case circuit breaker: For commercial and industrial applications.
• 3-pole design: For three-phase electrical systems.
• Thermal magnetic trip unit: Helps provide dependable overload and short-circuit protection.
• Internal common trip mechanism: Allows coordinated pole operation.
• Cable-in/cable-out (lug-lug) configuration: Supports easier installation and replacement.
• Includes both line-side and load-side lugs: Designed for practical field installation.
• HACR rated: For heating, air conditioning, and refrigeration equipment.
• Compatible with TKM8 breaker applications: Requiring a matching form and fit.
• Built for long service life: In demanding electrical environments.
  

Technical Specifications

• Part Number: TKMA836400WL
  
• Type: TKM8
  
• Poles: 3
  
• Amperage: 400A
  
• A.I.C. Rating & Voltage:
  • 22kA @ 600VAC
  • 30kA @ 480VAC
  • 42kA @ 240VAC
• Trip Unit: Thermal Magnetic
  
• Configuration: Cable-in/Cable-out (Lug-Lug)
  
• Trip Style: Internal Common Trip
  
• Dimensions:
  • Height: 15.5 in
  • Width: 8.25 in
  • Depth: 5.5 in

Material Compliance and Certifications

• HACR Rated: Designed for use in commercial and industrial electrical distribution systems.
• Performance Standards: Manufactured to meet applicable molded case circuit breaker performance standards.
  

Where It Works Best

• The TKMA836400WL is well-suited for industrial facilities, commercial buildings, manufacturing plants, motor control systems, HVAC equipment, and power distribution applications that require a 400-amp, 3-pole molded-case circuit breaker. It works especially well in existing systems where maintaining proper fit, compatibility, and electrical ratings is important. Whether used in switchgear, panelboards, or distribution equipment, this breaker is built to deliver consistent protection and dependable operation over time.