A MEMS switch in which at least first, second and third signal lines are provided over the substrate, which each terminate at a connection region. A lower actuation electrode arrangement is over the substrate. A movable contact electrode is suspended over the connection regions for making or breaking electrical contact between at least two of the three connection regions and an upper actuation electrode provided over the lower actuation electrode. The use of three of more signal lines enables a symmetrical actuation force to be achieved or enables multiple switch functions to be implemented by the single movable electrode, or both.