Thomson coil driven switch assembly with lightweight plunger

An electrical switch assembly, comprising:

• a contact element to be moved towards a further contact element for generating an electrical connection;
• and
• a drive for moving the contact element;
• wherein the drive comprises a plunger with a connection member interconnected with the contact element,
• wherein the plunger comprises a mechanical structure with a top side to which the connection member is connected, and a bottom side opposite to the top side, wherein an electrically conducting top face is on the top side and an electrically conducting bottom face is on the bottom side;
• wherein the drive comprises a Thomson coil for moving the plunger via the electrically conducting top face and the electrically conducting bottom face;
• wherein the mechanical structure comprises at least one channel between the top side and the bottom side, the at least one channel extending transverse to a movement direction of the plunger;
• wherein the mechanical structure fills less than 50% of a volume between the top side and the bottom side.