The　contactor　is　a　kind　of　control　apparatus　and　always　being　used　widely　in　industrial　manufacture.　The　improving　of　modernization　demands　more　on　the　intelligent　contactor.　How　to　determine　the　control　scheme　is　very　important　in　the　intelligent　control　of　the　AC　contactor,　this　paper　designed　an　intelligent　control　module　with　making　closed-loop　and　keeping　closed-loop　for　the　AC　contactor　using　the　8-bit　microcontroller　as　a　core.　The　module　can　adjust　the　coil　current　quickly　and　precisely.　CCS-RTOS　was　introduced　into　the　software　design.　The　real-time　operating　system　(RTOS)　simplified　the　design　process　and　enhanced　reliability　and　scalability　of　the　program.　Self-correction　control　which　based　on　current　scanning　was　used　to　optimize　the　making　process　of　the　AC　contactor.　This　control　scheme　can　find　a　best　making　current　curve　automatically　and　overcome　the　dispersiveness　and　the　dynamic　characteristics　change　of　the　electromagnetic　mechanism　when　the　contactor　runs　for　a　long　time.　The　experiment　verifies　that　CCS-RTOS　can　run　steadily　and　the　self-correction　control　is　effective.　Contact　bounces　and　electrical　wear　can　be　reduced　greatly.　It　improved　the　reliability　and　the　electrical　life　of　the　AC　contactors.　©　2014　VDE　VERLAG　GMBH.　All　rights　reserved.