Square D Schneider electric 8501XDLV66 Mechanical; Dc Timing; Coil Electrical voltage 230/250 Vdc; 8501Xdl Model; Used On (or to be used on/with) 8501X Series Relay (A relay is an electrically operated switch); With Intermittent Rated Coil . SQUARE D : RELAY MECHANICAL LATCH ATTACHMENT NEMA