Power Contactor Diagram. In which cb is a device to manually turn on and off the power supply and to protect the short. Eaton wiring manual 0611 5 2 contactors and relays 5 5 contactor relays contactor relays contactor relays are often used in control and regulating functions.
In the above one phase motor wiring i first connect a 2 pole circuit breaker and after that i connect the supply to motor starter and then i do cont actor coil wiring with normally close push button switch and normally open push button switch and in last i do. S terminal positive power from control unit or starter button activates coil closes contactor. There may also be a one line diagram that emphasizes the power system equipment and does not detail the relay system components but only those elements connected directly at the primary voltage.
The above diagram is designed to use lockable stop buttons only.
Either of the two start buttons will close the contactor either of the stop buttons will open the contactor. Nc push button green colour switch is used to turn off the contactor whereas the no push button red colour switch is used to turn on the contactor. S terminal positive power from control unit or starter button activates coil closes contactor. Power power coil gets ground from mounting bracket.