Contactor

A contactor has a simple structure, AC contactors KM[delta] and KMY are canceled in the circuit connection of the KM, the KM[delta] and the KMY in three DC contactors which are necessary to be used bycurrent motor star/delta start to allow the KM, the KM[delta] and the KMY to be in one body; the two contactors are omitted to save 2/3 cost and spaces, the circuit is simple in wiring, the time, thespace and the materials are saved, the circuit is simple in wiring, the resource maximum utilization is achieved, and the space compression and the efficiency maximum are achieved. 种接触器，结构简单，在现有的电机星/三角启动必用的三个交流接触器中的KM、KM△、KMY线路连接中，取消个交流接触器KM△、KMY，使其KM、KM△、KMY为三合；省去两个接触器，节省2/3开支和空间，线路连线简单，节省时间、空间、材料，线路连线简单，做到资源最大利用化、空间压缩化、效率最大化。