Contactor　with　eddy　repulsion　mechanism　is　designed　to　break　short-circuit　current.　Model　of　contactor　breaking　based　on　high-speed　eddy　repulsion　mechanism　is　established　with　ADAMS　and　ANSYS.　Both　transient　displacement　curves　of　moving　core　and　moving　contact　are　obtained.　Real-time　displacement　of　moving　core　and　moving　contact　is　recorded　by　high-speed　camera.　The　accuracy　of　simulation　model　and　physical　model　are　verified　by　the　data　that　obtained　form　ADAMS　and　high-speed　camera　in　this　paper.　Also,　a　50kA　short-circuit　experiment　is　performed　to　validate　the　characteristics　of　short-circuit　breaking.