The role of the pressure switch is to trigger the relay that turns the air compressor on and off.
The threads on this are 1/4″ BSPT
Screwed into the air system it will trigger the compressor on when pressures drop to 70 psi and then turn the compressor off when it reaches 100 psi. If you are running air suspension your max pressure might be only be 70 psi as the compressor wont come back on until it drops below 70 psi. If you need more pressure then you ought to get our 110-135 psi pressure switch.
You do need to run a relay and have this trigger the relay. You can get power from aux (only live when ignisyion is on) to this pressure switch and then onto the trigger pin on the relay – simple. Do not run the compressor through the pressure switch as that is too much power – it will compromise the speed of the compressor as well as burn out the pressure switch. That’s why we have relays.
We also stock 110-135 pressure switches
Tony Malone (verified owner) –
Adam (verified owner) –