An cholumikizira cha ACndi gawo lamagetsi lotsika lomwe limagwiritsidwa ntchito polumikiza ndi kulumikiza ma AC main circuits pafupipafupi pa mtunda wautali. Limagwiritsidwa ntchito kwambiri powongolera mota, kugawa mphamvu, automation yamafakitale, ndi kumanga makina amagetsi. Ntchito yake yayikulu ndikukwaniritsa kuyambika ndi kuyimitsa kwa zida zamagetsi pokoka zolumikizirana kudzera mu ma coil amagetsi, ndipo lilinso ndi kuthekera kogwiritsidwa ntchito limodzi ndi makina oteteza overload. Ma contactor a Ac amagwiritsidwa ntchito kwambiri m'mapampu amadzi, mafani, ma air conditioner, ma elevator, zida zopangira, makabati oyambira mota ndi makina owongolera magetsi, zomwe zimatha kupititsa patsogolo chitetezo ndi automation ya circuit control.

Mu ntchito zenizeni, ma contactor a AC amasankhidwa kutengera mphamvu yawo yamagetsi, mphamvu ya coil, kuchuluka kwa mitengo, ndi malo ogwiritsidwa ntchito. Mwachitsanzo, zida zazing'ono zapakhomo kapena zamafakitale nthawi zambiri zimagwiritsa ntchito ma specifications a 9A mpaka 32A, pomwe zida zazikulu zafakitale zingagwiritse ntchito ma contactor amphamvu kwambiri okhala ndi mphamvu yoposa 65A. Mitundu yodziwika bwino ndi Schneider Electric, Siemens, ABB ndi mtundu wa Chint wakunyumba, ndi zina zotero.

Ponena za mtengo, ma contactor a AC amasiyana kwambiri chifukwa cha zomwe zimafunika komanso mitundu: mtengo wamsika wa zinthu zazing'ono za 9A mpaka 18A ndi pafupifupi 50 mpaka 150 yuan pa chidutswa chilichonse, mtengo wapakati wa zinthu za 32A mpaka 65A ndi pafupifupi 150 mpaka 500 yuan pa chidutswa chilichonse, ndipo wa zinthu zamphamvu kwambiri za 100A ndi pamwambapa nthawi zambiri umakhala pakati pa 500 mpaka 2,000 yuan kapena kupitirira apo. Mitundu yotumizidwa kunja nthawi zambiri imakhala yokwera mtengo kuposa ya m'nyumba, koma ili ndi ubwino wina pankhani yokhazikika, nthawi yayitali komanso yodalirika. Chifukwa chake, m'mapulojekiti aukadaulo, kusankha koyenera kuyenera kupangidwa pamodzi ndi mphamvu yonyamula katundu, malo ogwiritsira ntchito komanso bajeti.