TJJ426400 - 400Amp Circuit Breaker

TJJ426400 - 400 Amp Circuit Breaker

The TJJ426400 molded case circuit breaker is designed for dependable circuit protection in your commercial and industrial electrical distribution systems that require a 400-amp, 2-pole configuration. Built as part of the GE Q-Line family, this bolt-on breaker features a non-interchangeable thermal magnetic trip unit with internal common trip functionality for reliable overcurrent and short-circuit protection. Its compact, molded case design simplifies installation in compatible panelboards and switchgear applications while maintaining the form and fit required for existing systems. With HACR rating capability and included load-side lugs, the TJJ426400 is well-suited for HVAC equipment, heavy-duty power distribution, and other demanding electrical applications where durability and consistent operation matter. Designed to last and built for long-term service environments, this breaker provides the ratings and compatibility required for maintaining and servicing established electrical infrastructure.

Key Features and Benefits

• 400 Amp, 2-Pole Configuration: Designed for commercial and industrial electrical distribution systems requiring dependable circuit protection in a 400-amp, 2-pole setup.
• GE Q-Line Series Design: Built as part of the GE Q-Line family for use in compatible distribution systems and existing electrical infrastructure.
• Bolt-On Mounting Configuration: Provides secure installation in compatible panelboards and switchgear applications while maintaining proper form and fit.
• Thermal Magnetic Trip Unit: The non-interchangeable thermal magnetic trip unit helps protect against overloads and short circuits with reliable overcurrent protection.
• Internal Common Trip Functionality: Internal common trip functionality allows for coordinated pole operation during fault conditions.
• Includes Load-Side Lugs: Comes with load-side lugs for added installation convenience.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment applications.
• Compact Molded Case Design: Helps simplify installation in space-conscious electrical equipment and distribution systems.
• Built for Long Service Life: Designed for durability and consistent operation in demanding commercial and industrial environments.
  

Technical Specifications

• Part Number: TJJ426400
  
• Type: TJJ
  
• Manufacturer Series: Q-Line
  
• Poles: 2
  
• Amperes: 400A
  
• Voltage & A.I.C. Ratings:
  • 22k A.I.C. @ 600VAC
  • 30k A.I.C. @ 480VAC
  • 42k A.I.C. @ 240VAC
• Trip Unit: Non-Interchangeable Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Trip Function: Internal Common Trip
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• HACR Rated: Suitable for heating, air conditioning, and refrigeration applications.
• Industry Standards: Manufactured to meet applicable molded case circuit breaker industry standards for protection and operational safety in commercial and industrial electrical distribution systems.
  

Where It Works Best

• The TJJ426400 circuit breaker is commonly used in commercial buildings, industrial facilities, HVAC systems, distribution panels, motor control applications, and power management systems that require a 400A, 2-pole breaker with bolt-on mounting. It is especially useful for maintaining existing electrical equipment where proper form, fit, and functional compatibility are important.