Common relay contactor set up utilising a start stop circuit fig 2.
Start stop circuit contactor.
Step by step procedure for the basic stop start control wiring and diagram on a magnetic contactor with nc and no push button switch and how does it works.
Note that one one of the contactor acts as a switch for the start button.
When you press the start button and the stop button is not pressed the 24vdc relay energizes and it pulls in the r1 contactor that feeds three phase power to the motor.
Basiclly you press start button which powers the coil which then pulls in the contactor once the contactor makes the feed from the stop button holds the coil in untill the stop button is pressed which breaks the circuit.
A simple circuit diagram either of the two start buttons will close the contactor either of the stop buttons will open the contactor.
The contactor is operated by the control circuit energizing a coil as in the example above.