缺(que)相(xiang)過(guo)載保護(hu)器(qi)WK-2CN0504，低壓(ya)小容量(liang)缺(que)相(xiang)保護(hu)器(qi)保護(hu)電(dian)動(dong)機WK-2CN0504電(dian)路(lu)中(zhong)壹般均(jun)裝(zhuang)有(you)熔斷(duan)器(qi)，熱繼電(dian)器(qi)和(he)交流(liu)接觸(chu)器(qi)，能夠對(dui)電(dian)動(dong)機的(de)短(duan)路(lu)、過(guo)載、失(shi)壓(ya)等故障(zhang)進行防(fang)護(hu)，但缺(que)相(xiang)運行(xing)時(shi)，上(shang)述(shu)電(dian)器(qi)很難(nan)對電(dian)動(dong)機起到保護(hu)作(zuo)用(yong)

WK-2功率(lv)控(kong)制器(qi)具有(you)現場操作(zuo)和(he)遠(yuan)主操(cao)作(zuo)控(kong)制等功能，現場調試(shi)極(ji)為(wei)方便，適用(yong)於(yu)開(kai)環(huan)控(kong)制系統中(zhong)各(ge)類(lei)閥(fa)門進(jin)行開(kai)關操(cao)作(zuo)和(he)控(kong)制，電(dian)控(kong)部分同(tong)薄膜按(an)鍵(jian)面(mian)板(ban)、功能板和(he)交流(liu)接觸(chu)器(qi)組成(cheng)。