THJK426F000 - 400Amp Max. *Frame Only*

THJK426F000 - 400Amp Max. *Frame Only*

The THJK426F000 is a 400-amp, 2-pole molded case circuit breaker frame from the THJK4 series. Designed for use in your Q-Line bolt-on systems, this frame-only unit is commonly used in commercial and industrial power distribution applications where a compatible replacement component is needed.

With interrupting ratings of 25kA at 600VAC, 35kA at 480VAC, and 65kA at 240VAC, the THJK426F000 is suitable for electrical systems requiring substantial fault-current capacity. Its bolt-on design provides a secure connection with compatible equipment, while the HACR rating allows use in approved heating, ventilation, air conditioning, and refrigeration applications.

Whether you're maintaining existing equipment, replacing damaged components, or supporting a retrofit project, the THJK426F000 is designed to match the form and fit requirements of compatible installations. Built for long service life, it remains a practical choice for facilities that rely on proven electrical distribution equipment.

Key Features and Benefits

• Part Number: THJK426F000
• 400 Amp Molded Case Circuit Breaker Frame: Designed for commercial and industrial electrical distribution applications requiring a compatible replacement component.
• 2-Pole Configuration: Provides a two-pole design suitable for compatible electrical systems.
• THJK4 Series: Manufactured as part of the THJK4 circuit breaker frame series.
• Q-Line Bolt-On Design: Provides a secure bolt-on connection with compatible equipment.
• HACR Rated: Approved for use in applicable heating, ventilation, air conditioning, and refrigeration applications.
• Frame-Only Construction: Intended for replacement, maintenance, and retrofit projects where a compatible frame is required.
• Built for Long-Term Use: Designed for long service life in demanding commercial and industrial environments.
  

Technical Specifications

• Part Number: THJK426F000
  
• Type: THJK4
  
• Configuration: Frame Only
  
• Poles: 2
  
• Amperage: 400A
  
• Series: Q-Line
  
• Mounting: Bolt-On
  
• HACR Rated: Yes
  
• A.I.C. Rating:
  • 25kA @ 600VAC
  • 35kA @ 480VAC
  • 65kA @ 240VAC
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: HACR Rated.
• Electrical Distribution Applications: Manufactured for use in applicable electrical distribution systems.
• Compatibility Notice: Verify compatibility and installation requirements before use.
  

Where It Works Best

• The THJK426F000 is commonly found in commercial buildings, manufacturing facilities, institutional properties, and other locations that utilize Q-Line electrical distribution equipment. It is particularly useful for maintenance and replacement projects where maintaining compatibility with existing switchgear, panelboards, or distribution equipment is important.