Type L door mounted, variable depth operating mechanisms feature heavy duty, all metal construction with trip indication. This long shaft will work with PowerPact D and PowerPact L circuit breakers. Circuit breakers can be 2 or 3 pole with a frame size of 600 A. The mounting depth of this shaft is 7.25 to 22.625 inches from the circuit breaker mounting surface, control panel, to outside of enclosure door.