acis single-phase electric chain hoists are among the most dependable on the market. the mh series was designed for heavy duty applications, which greatly reduces down time and operational costs. ideal for mechanics and ......acis single-phase electric chain hoists are among the most dependable on the market. the mh series was designed for heavy duty applications, which greatly reduces down time and operational costs. ideal for mechanics and other shop applications, where lightweight hoists and portability count. operates on standard 110-120v ac, which means you can plug it in just about anywhere! the long fifteen foot power cord plugs into any standard outlet. no three-phase hook-up necessary! aci chain hoists tolerate large loads with ease and require little maintenance. may be purchased on its own or bundled with a heavy-duty push trolley.