Decoupler with overrunning and belt-start capability

A clutched device, comprising:

• a hub defining an axis and connectable to a rotatable shaft of a rotary device;
• a pulley that is rotatable relative to the hub and that is engageable with an endless drive member;
• an isolation spring that operatively connects the hub to the pulley when the hub drives the pulley in a first rotational direction;
• a hub drive clutch that is a wrap spring clutch and that is controllable to operatively connect the pulley to the hub for driving the hub in a first rotational direction;
• a clutch actuator assembly that is operatively connected to the wrap spring clutch, wherein the clutch actuator assembly includes an electromagnetic coil and an armature,
• wherein the wrap spring clutch has a first end and a second end, and wherein the armature is rotationally connected to the second end of the wrap spring,
• wherein energization of the electromagnetic coil draws the armature axially into engagement with a wall to cause friction of the armature with the wall, so as to drive the second end of the wrap spring clutch rotationally relative to the first end, to operatively connect the pulley and the hub.