A MEMS type safety and arming device includes a substrate; a frame disposed on the substrate; a setback slider disposed in the frame, the setback slider moving linearly in response to a setback acceleration; an arming slider disposed in the frame, the arming slider moving linearly in an arming direction perpendicular to the direction of the setback acceleration and in response to spin; a setback lock lever disposed in the frame, the setback lock lever engaging the arming slider to prevent linear motion of the arming slider until the setback slider contacts and moves the setback lock lever; and a command lock rocker disposed in the frame, the command lock rocker engaging the arming slider to prevent full arming motion of the arming slider until after the command lock rocker is actuated.