K1F003ULH is a 3-pole cam switch manufactured by Schneider, with a 12A maximum current rating and an action of 2-0-1 (ON - OFF - ON). It has three stable positions, each labeled "Pos." (I - II - III). It is most commonly used as an electrical switch for activating and deactivating appliances and equipment (e.g. lights, fans, etc), or as an emergency stop switch, in industrial and commercial applications.