可(ke)以(yi)用(yong)来(lai)控(kong)制(zhi)(zhi)(zhi)(zhi)交流50HZ，500V以(yi)下的(de)电(dian)力的(de)配电(dian)设施的(de)动(dong)(dong)力装(zhuang)置。应(ying)用(yong)在开(kai)厂矿、企业、商场、宾馆(guan)、学校、机(ji)(ji)场、港口、医院(yuan)、高层建筑、生(sheng)活小区(qu)等场合(he)，交流50HZ，额定工作(zuo)(zuo)电(dian)压为交流380V的(de)低压电(dian)网系统(tong)中(zhong)，作(zuo)(zuo)为动(dong)(dong)力、照(zhao)明配电(dian)及电(dian)动(dong)(dong)机(ji)(ji)控(kong)制(zhi)(zhi)(zhi)(zhi)之用(yong)，也(ye)可(ke)以(yi)使(shi)用(yong)于交流50HZ，电(dian)压500V以(yi)下电(dian)力系统(tong)作(zuo)(zuo)为消防水(shui)(shui)泵控(kong)制(zhi)(zhi)(zhi)(zhi)、潜水(shui)(shui)泵控(kong)制(zhi)(zhi)(zhi)(zhi)、消防风机(ji)(ji)控(kong)制(zhi)(zhi)(zhi)(zhi)、风机(ji)(ji)控(kong)制(zhi)(zhi)(zhi)(zhi)、照(zhao)明配电(dian)控(kong)制(zhi)(zhi)(zhi)(zhi)等使(shi)用(yong)。控(kong)制(zhi)(zhi)(zhi)(zhi)方(fang)式有直(zhi)接(jie)启(qi)动(dong)(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)、星三角降压启(qi)动(dong)(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)、自(zi)藕降压启(qi)动(dong)(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)、变(bian)频器启(qi)动(dong)(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)、软启(qi)动(dong)(dong)控(kong)制(zhi)(zhi)(zhi)(zhi)等各种控(kong)制(zhi)(zhi)(zhi)(zhi)方(fang)式，还可(ke)使(shi)用(yong)隔(ge)离开(kai)关(guan)、熔断器式开(kai)关(guan)作(zuo)(zuo)为隔(ge)离分断点。