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

suitable for driving large relay banks

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

Enhanced Sampling: Provides critical low-flow performance for ducts up to 8 feet wide

a different window insert and cover configuration would be required to maintain scale legibility

Johnson Controls P400AD-2 Pressure Switch Freon this 15 AMP fusible linkSingle 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