MACROMATIC INDUSTRIAL CONTROLS ATP120A1R ALTERNATING RELAY;PLUGIN3A SPNO 120VAC TRI/DUPL

All three switches are open and all loads are off. When the LEAD Switch closes, it energizes Load 1. As long as the LEAD Switch remains closed, Load 1 remains energized. If the LAG Switch closes, Load 2 is energized. If the LAG2 Switch closes, it energizes Load 3. Each load is turned off in sequence as the switches are opened. The entire cycle is then repeated, but with Load 2 energized first followed by Load 3 and then Load 1. For Triplex Loads. Works with 3 Switch inputs-LEAD, LAG and LAG2. Optional top-mounted switch allows use as standard Triplexor or as Duplexor until system expansion requires additional third Load. Input Switch Failure Indication. Pilot Duty Rating.