Wire up a Normally Open Contact Push Button terminal "a" to a source and the push button terminal "b" to the relay coil "A1" that will be terminal 7 of the relay for 8 pin relay and the relay coil "A2" to neutral point that will be terminal 2 of the relay.
Wire up one set of the Normally Open Contact "Comm" of the relay, that will be terminal 1 of the relay to a source and the other relay open contact that will be terminal 3 to the contactor coil "A1". The contactor coil "A2" terminal will be to neutral point.
Then power up the circuit. Press the push button. As the push bottom is pressed, the push button contact will be close making the circuit close and the voltage flow thru the push button contact and energise the relay. The relay contact 1 and 4 will also close. The source to the relay terminal 1 will flow thru the relay contact point and energise the contactor.
Once you release the push button, the circuit is open and everything will opened.
If you are an electrician you can try it out BUT, if you are not an electrician please don't do it. It is very dangerous and electricity can kill.
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relay
Re: relay
