ABB / General Electric TJK436350 Molded Case Circuit Breaker

This breaker is designed for installation in GE J600 panelboards, GE A-Series panelboards, and GE switchboards. Proper mounting hardware is required based on the specific enclosure type.

The terminals accommodate either one 6 AWG to 600 kcmil copper or aluminum wire, or two 2/0 AWG to 250 kcmil copper or aluminum wires per phase.

The breaker uses a fixed thermal element to provide long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.

The TJK436350 was originally developed by General Electric. Following ABB's acquisition of GE Industrial Solutions, the breaker is now branded as ABB / General Electric. The physical dimensions and electrical specifications remain identical.

When a fault occurs, the handle moves to a center tripped position. To restore power, push the handle to the extreme OFF position to reset the internal mechanism, then push it back to the ON position.

Yes, the TJK frame features an interchangeable trip unit design. This allows licensed electricians to replace or upgrade the trip mechanism without removing the entire breaker frame from the switchboard.

The TJK436350 typically includes load-side lugs. Line-side connections often require separate mounting hardware or busbar connections depending on your specific panelboard configuration.

The adjustable magnetic setting allows panel builders to fine-tune the instantaneous short-circuit pickup level. This helps coordinate the breaker with downstream devices and prevents nuisance tripping from high inrush currents.