What is meant by cut-in and cut-out settings?

The cut-in and cut-out settings of a pressure switch are the PSI settings at which the switch starts and stops the pump.

Cut-In: a.k.a. “Reset Point” (falling pressure)

• snap-action closes the contacts (completes the electrical circuit) and the pump starts

Cut-Out: a.k.a. “Trip Point” (rising pressure)

• snap-action opens the contacts (breaks the electrical circuit) and the pump stops