General Electric TJK426F000 Circuit Breaker

The GE TCAL43 lug terminal kit is the standard match for 400A J-frame breakers like the TJK426F000. It features dual-barrel, plated extruded aluminum lugs rated for both copper and aluminum wiring.

In addition to its 30kA rating at 480V AC, the TJK frame is rated to interrupt 42kA at 240V AC and 22kA at 600V AC. It also carries a 10kA interrupting rating for 250V DC applications.

Yes, the TJK frame design supports interchangeable thermal-magnetic trip units. While this specific configuration is rated for 400 Amps, the frame allows for different trip ratings to be installed if system requirements change.

Yes, the GE J-600 line supports field-installable internal accessories. You can equip the TJK426F000 with shunt trips, undervoltage releases (UVR), and auxiliary contacts to integrate with your facility control systems.

Yes. Following ABB's acquisition of GE Industrial Solutions, many GE-designed circuit breakers, including the TJK frame, may feature ABB branding. They share the exact same form, fit, and function as the original GE units.

The TJK426F000 is a bolt-on molded case circuit breaker designed for panelboard or switchboard mounting. It requires appropriate mounting hardware for secure installation in GE J-Line enclosures.

Routine maintenance should include verifying that bolt-on connections and lug torques meet the manufacturer specifications. The breaker should be kept free of dust and debris, and periodically exercised to ensure the mechanical linkages operate smoothly.