Commanding and Signaling Device
Commanding and signaling devices for automation applications are defined mainly as switches, push-buttons and lamps for front panel and control panel mounting.
Motor Starting Device
A star-delta starting device consists normally of three contactors, an overload relay and a timer for setting the time in the star-position . The starting current is about 30 % of the direct-on-line starting device. The starting torque is about 25 % of the direct-on-line starting torque.