Westinghouse Cutler-Hammer M34-1A Mechanical Interlock is a vertical, A200-size interlock designated Size 00-0-1. It is designed to mate with compatible Westinghouse Cutler-Hammer components and provides a mechanical interlock function that prevents movement of a connected actuator until released by a mating part. The vertical orientation informs its mounting approach within compatible equipment, and the M34-1A designation identifies this specific interlock within the Cutler-Hammer line.
