Schneider TeSys K Contactor 3P, 1 NO Aux. 48 V AC CoilThree pole contactor for motorized applications up to 4 kW at 480 V AC 50 60 Hz AC 3. Switch on and off during 20 years electrical power supply of a downstream installation with an electrical and or mechanical control. The functional unit is characterized by a type instantaneous 1 NO, a control circuit voltage 48 V AC 50 60 Hz a power circuit voltage 690 V and a maximum allowed intensity by the power circuit 20 A (at <50 C) at <= 440 V AC AC 1.