Presair Pressure Switch PM11120A
21A 250 VAC
1 HP 125 VAC
2 HP 250 VAC
1/2″ Mounting Thread with Flats
What does SPDT mean?
Single Pole Double Throw (SPDT) Switching Element - A SPDT switching element has one normally open, one common and one normally closed terminal. Three terminals mean that the switch can be wired with the circuit either normally open (N/O) or normally closed (N/C).