In　this　paper,　it　is　presented　that　an　improved　method　for　calculating　the　dynamic　behaviour　of　a　vacuum　circuit　breaker　(VCB)　with　a　permanent　magnetic　actuator　(PMA).　This　method　integrates　different　software　including　MATLAB,　ANSYS　and　ADAMS　to　solve　the　dynamic　behaviours　of　a　PMA,　which　makes　the　calculations　convenient.　Moreover　it　is　suitable　for　analyzing　complex　models　or　intelligent　controls　such　as　synchronous　switching.　In　addition　the　analysis　results　are　also　performed.