Abstract: A microwave switch arrangement for the selective connection of n input lines with n+ a output lines including m microwave switches, where m.gtoreq.n, each including a rotor and a stator with at least two waveguide passages in the rotor and waveguide switch inputs and outputs in the stator, as well as waveguides for establishing interconnections between the microwave switches. The microwave switches are fastened to a carrier plate by means of respective waveguide flanges; waveguide connections, corresponding in their dimensions to the waveguide passages, are formed in the carrier plate; further waveguide connections extend at least in one plane parallel to the carrier plate; and selected of the microwave switch inputs and outputs are connected with the waveguide connections formed in the carrier plate, via the associated waveguide flanges, and with the further waveguide connections.