Low　voltage　electromagnetic　switches　are　widely　used　in　distribution　systems,　its　action　characteristic　is　related　to　the　performance　of　the　switch,　also　affects　the　power　quality　of　the　network.　This　article　took　the　intelligent　electromagnetic　switch　as　the　research　object,　established　its　3D　simulation　model.　Introduce　the　3D　model　into　the　Recurdyn　multi-body　dynamics　software,　and　then　use　Simulink　to　build　an　intelligent　control　circuit.　Through　the　electro-magnetic-mechanical　integrated　simulation,　the　dynamic　characteristic　parameters　such　as　the　closing　speed,　closing　time　and　bounce　time　of　the　contact　during　the　pull-in　process　of　the　prototype　ware　obtained.　The　influence　of　different　coil　reference　currents,　contact　springs　and　reaction　springs　on　the　contact　bounce　of　the　prototype　was　analyzed　from　the　perspective　of　dynamics.　The　research　has　a　good　reference　significance　for　improving　the　action　characteristics　of　electromagnetic　switch.　©　2021　IEEE.