control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit
using or providing or producing or transmitting or operated by electricity
change over, change around, as to a new order or sequence
control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit
lay aside, abandon, or leave for another
an event in which one thing is substituted for another
the act of changing one thing or position for another
