I want to control the on and Off the 3 phase induction motors using arduino. previously i posted he question on this, and some how I sorted that I can replace the On and Off push buttons with relays and we can operate them using arduino. But the problem is the starter coil rated at 440 volts, so it becomes expensive.
so Is it possible to have some sort of mechanism to control the on and off push buttons(push and pull controls?) like we send the digital high it will press the start button for 10 sec. may be using stepper motor or servo motor or any other means, i am not expert here so any suggestions are welcomed.