In this paper, theoretical and experimental studies of an arcless current interruption technique are presented. The introduced method eliminates the switching arc and its consequences through application of liquid metal and resistive contacts. First, the solid-liquid contact system is analyzed and the basic phenomena related to arcless switching are elaborated. Then the design requirements are recognized and are converted to a set of mathematical expressions and accordingly the design parameters are determined. The major electromagnetic quantities like current density distribution, magnetic flux density and the force are obtained by a FEM solver and the calculated force is used in numerical calculations of motion simulation. Finally, the designed structure is evaluated through a set of experiments which test the performance of the switch especially in the arcless current interruption.

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