THKMA826400WL - 400Amp Circuit Breaker

THKMA826400WL - 400 Amp Circuit Breaker

The THKMA826400WL is a 400 Amp, 2-pole THKM8 molded case circuit breaker designed for you to use in commercial and industrial electrical distribution systems requiring dependable overcurrent and short-circuit protection. Featuring a thermal magnetic trip unit with internal common trip functionality, this breaker helps you protect conductors and connected equipment from damage caused by overloads and fault conditions. Its cable-in/cable-out (lug-lug) configuration includes both line-side and load-side lugs, helping simplify installation and replacement in compatible systems. Built for long service life and engineered to meet demanding electrical protection requirements, the THKMA826400WL is well suited for a variety of heavy-duty power distribution applications where reliable circuit protection is essential.

Key Features and Benefits

• 400 Amp Current Rating: 400 Amp current rating for high-capacity power distribution applications.
• 2-Pole Configuration: 2-pole configuration designed for compatible commercial and industrial systems.
• Thermal Magnetic Trip Unit: Thermal magnetic trip unit provides protection against overloads and short circuits.
• Internal Common Trip Mechanism: Internal common trip mechanism ensures coordinated disconnection during fault events.
• Cable-In/Cable-Out Design: Cable-in/cable-out (lug-lug) design for straightforward field installation.
• Included Lugs: Includes both line-side and load-side lugs.
• HACR Rated: HACR rated for use in heating, air conditioning, and refrigeration applications.
• Molded Case Construction: Molded case construction designed for durability in demanding operating environments.
• Long-Term Protection: Built to provide long-term electrical protection in compatible equipment and distribution systems.
  

Technical Specifications

• Part Number: THKMA826400WL
  
• Type: THKM8
  
• Current Rating: 400 Amps
  
• Poles: 2
  
• Trip Unit: Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Configuration: Cable-In/Cable-Out (Lug-Lug)
  
• Included Accessories: Line-Side and Load-Side Lugs
  
• HACR Rated: Yes
  
• Interrupting Rating:
  • 25kA @ 600VAC
  • 35kA @ 480VAC
  • 65kA @ 240VAC
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.

Material Compliance and Certifications

• HACR Rated: HACR rated for heating, air conditioning, and refrigeration applications.
• Industry Standards: Manufactured to meet applicable industry standards for molded case circuit breakers.
• Installation Requirements: Designed for installation and operation in accordance with applicable electrical codes and equipment specifications.
• Compatibility Verification: Verify compatibility, ratings, and installation requirements before use in a specific system.
  

Where It Works Best

• The THKMA826400WL is commonly used in industrial facilities, manufacturing plants, commercial buildings, distribution equipment, switchboards, panel systems, and large mechanical installations requiring 400-amp overcurrent protection. Its combination of high interrupting capacity, thermal magnetic protection, and lug-lug configuration makes it a practical choice for protecting feeders, large equipment loads, HVAC systems, and power distribution circuits in compatible electrical systems.