Type MC handle mechanisms are linear drive, fixed depth mechanisms designed for through door mounting in standardized or shallow depth enclosures such as motor control centers or enclosed circuit breakers. Mounting directly to the front of the disconnect these mechanisms provide positive operation and handle indication. Both disconnect and mechanism mount simultaneously with mounting hardware supplied with the mechanism. For security, the handle can be padlocked in the off position with up to three 0.375 in hasp padlocks. Also, the mechanism is interlocked with the enclosure door so that the disconnect must be OFF before the door can be opened. A defeater is provided to bypass this interlock.