factory-preset to activate at 30 PSI on decreasing pressure to alert teams of critical system pressure drops

this 15 AMP fusible link serves as a primary defense against furnace or air handler overheating

Common Questions: Where is the limit switch located on a Lennox furnace

and laboratory equipment

this harness offers the reach required for complex cabinet layouts

Johnson Controls P400AD-2 Pressure Switch Freon factory-preset to activate at 30Single Point Differential Oil Pressure Switch, 12. 75 0. 75 Psid Open Point ( Differential Pressure ), Less than or Equal to 4. 5 Psid Close Point ( Differential above Open Point ), 3 4" Threads, Includes Wiring Harness ( WHA P400 100 ) P400AD 2 is the direct replacement for P300AD 2