Inelectricalengineering,aswitchisanelectricalcomponentthatcandisconnectorconnecttheconductingpathinanelectricalcircuit,interruptingtheelectriccurrentordivertingitfromoneconductortoanother.Themostcommontypeofswitchisanelectro-mechanicaldeviceconsistingofoneormoresetsofmovableelectricalcontactsconnectedtoexternalcircuits.Whenapairofcontactsistouching,currentcanpassbetweenthem,whilewhenthecontactsareseparatednocurrentcanflow.Features3-Phase3