AC-301 Series Three Phase Line Under Voltage and Phase Loss Monitor/ Short Cycle Protector, Diversified, Mfr#: AC-301-440

When the fault has been corrected, the delay-on-make delay period beggins. This delay is field adjustable from 0.2 to 8 minutes. It is incorporated to allow the head pressure to equalize before restart. It provides random restart in multiple equipment installations.