THKMA31000WL - 1000Amp Circuit Breaker

THKMA31000WL - 1000 Amp Circuit Breaker

The THKMA31000WL is a 3-pole, 1000-amp industrial molded case circuit breaker designed for dependable circuit protection in your commercial and industrial power distribution systems. Built with an interchangeable thermal magnetic trip unit and internal common trip functionality, this breaker helps you to protect electrical equipment and conductors from overloads and short circuits while maintaining compatibility with systems requiring a THKMA-series breaker. Its cable-in/cable-out (lug-lug) configuration includes both line-side and load-side lugs, helping simplify installation and replacement in existing electrical assemblies.

Designed for demanding applications, the THKMA31000WL features interrupting ratings of 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, making it suitable for a wide range of industrial and commercial electrical distribution environments. The HACR rating further supports use in heating, air conditioning, and refrigeration-related applications where appropriate. Built to last and engineered for long-term service, this breaker provides a practical solution when maintaining, repairing, or replacing equipment in established electrical systems.

Key Features and Benefits

• 1000 Amp Current Rating: 1000 Amp current rating for high-capacity power distribution applications.
• 3-Pole Configuration: 3-pole configuration for three-phase electrical systems.
• THKMA Series Design: THKMA series molded case circuit breaker design.
• Interchangeable Thermal Magnetic Trip Unit: Interchangeable thermal magnetic trip unit for overload and short-circuit protection.
• Internal Common Trip Mechanism: Internal common trip mechanism for coordinated pole operation.
• Cable-In/Cable-Out Construction: Cable-in/cable-out (lug-lug) construction.
• Included Lugs: Includes both line-side and load-side lugs.
• HACR Rated: HACR rated for compatible heating, air conditioning, and refrigeration applications.
• Application Suitability: Suitable for commercial, industrial, and facility power distribution systems.
• Long Service Life: Built for long service life in demanding operating environments.
  

Technical Specifications

• Part Number: THKMA31000WL
  
• Type: THKMA
  
• Poles: 3
  
• Amperage Rating: 1000A
  
• Trip Unit: Interchangeable Thermal Magnetic
  
• Trip Style: Internal Common Trip
  
• Configuration: Cable-In/Cable-Out (Lug-Lug)
  
• Included Accessories: Line-Side and Load-Side Lugs
  
• A.I.C. Rating @ 600VAC: 25kA
  
• A.I.C. Rating @ 480VAC: 35kA
  
• A.I.C. Rating @ 240VAC: 65kA
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 15.5 in.
  • Width: 8.25 in.
  • Depth: 5.5 in.

Material Compliance and Certifications

• HACR Rated: HACR Rated.
• Commercial and Industrial Use: Manufactured for use in commercial and industrial electrical distribution systems.
• Industry Standards: Designed to meet applicable industry standards associated with molded case circuit breakers.
• Installation Verification: Verify local code requirements and application-specific compliance before installation.
  

Where It Works Best

• The THKMA31000WL is well suited for industrial facilities, manufacturing plants, commercial buildings, power distribution equipment, switchgear assemblies, motor control applications, and large HVAC systems requiring a 1000-amp, 3-pole molded case circuit breaker. It is commonly used where dependable overcurrent protection is needed for feeders, distribution circuits, and other high-capacity electrical infrastructure while maintaining compatibility with existing THKMA-series installations.