Interlock 01
Interlock 01 : (Safety) (1) A device actuated by the operation of some other device to govern succeeding operations. (2) A device that prevents the operation of a machine while a cover or door of the machine is open or unlocked, and which will also hold the cover or door closed and locked while the machine is in operation. An elevator, for example, will not move until the door is closed. (3) A device that interrupts power until certain predetermined conditions are met