Air compressor automatic pressure switch AC contactor how to connect
220V coil connection: L1, L2, L3 out of any one I then a rotary switch, switch out into the pressure switch normally closed point, often closed and then come out to receive your contactor coil, the other end of the coil connected to the zero line N.
380V coil connection: L1, L2, L3 three phase: L1 phase out I then a rotary switch, switch out into the pressure switch normally closed point, often closed and then come out to receive your contactor coil, the other end of the coil L2
The pressure switch normally closed contacts control the yellow line of the contactor on it.
The simplest connection: you first understand how much of your contactor coil voltage is V (V)
