Kupera-mhando yakatevedzana mbiri-simba otomatiki yekuchinjisa switch isanganiswa yekuchinja uye logic control, pasina kudiwa kweimwe yekuwedzera controller kuti inyatso zadzisa electromechanical kubatanidzwa, nemabasa akadai sekuona voltage, frequency, l yekutaurirana interface, magetsi, mechanical interlock, etc. inogona kuona otomatiki, magetsi kure, Emergency manual control.