Ma AC Contactors ndi ofunikira pamabwalo a AC pamagetsi, kugawa, ndi makina, pomwe ma DC Contactors, opangidwira mabwalo a DC, ndi ofunikira mu mphamvu zatsopano komanso zakuthambo. Electromagnetic contactors ndizodziwika komanso zodalirika, zomwe zimagwiritsidwa ntchito popanga makina ndi makina apakhomo, okhala ndi mitundu ya pneumatic ndi hydraulic yomwe imapereka zabwino zina. Zolumikizira zamtundu umodzi ndizoyenera kumakina ang'onoang'ono, pomwe ma multipole amawongolera mabwalo angapo pamakina ovuta. Zolumikizira zamtundu wotseguka zimapangidwira malo aukhondo, otsekeredwa pamikhalidwe yovuta, komanso malo osaphulika m'malo owopsa.