Type L door mounted, variable depth operating mechanisms feature heavy duty, all metal construction with trip indication. Operating mechanism can be padlocked in the Off position when the enclosure door is open. Handle assemblies can be locked Off with up to three padlocks, which also locks the door closed This operating mechanism will work with PowerPact M and PowerPact P circuit breakers. Circuit breakers can be 3 pole with a frame size of 1200A. Proper circuit breaker, operating handle and operating shaft must be ordered separately. Mechanism is UL Component Recognized and CSA certified.