Recently, the importance of development for improvement of a reliability and a performance in the electric power systems is increasing since the electric energy consumption growth. In general, experiments and simulations are used for design evaluations. But the simulations are recommended because the experiments need a lot of money and time. However, 3D simulations of the analysis methods are difficult and time is spent a lot of. And multiphysics for analyzing various physical phenomenons at the same time is difficult to realize. In this paper, 1D simulations of most economical analysis methods were used for developing high speed analysis program. Also multiphysics were composed to associate dynamics of the mechanism with pneumatic of the CB(Circuit Breaker). And the Matlab/Simscape was used to develop to make sure of a valid reliability in a initial stage of study.