Powered safety curtains are disclosed. An example barrier for an opening includes a motorized drive unit, and a curtain. The example barrier also includes a track disposed along the lateral edge of the curtain, a guide plate carried by the curtain and extending into the track and a nonferrous guide member attached to the guide plate. The example barrier also includes a first safety device comprising a first wireless portion attached to the nonferrous guide member and a first electrical portion mounted relative to the track. The first electrical portion is in the first activated state when the first wireless portion is in proximity with the first electrical portion as a result of the leading edge of the curtain being at the closed position. The first wireless portion is in the first deactivated state when the first wireless portion is remote relative to the first electrical portion.