電(dian)機車用(yong)(yong)(yong)直流分區(qu)開(kai)關為(wei)礦(kuang)用(yong)(yong)(yong)一般型(xing)小型(xing)設備，適用(yong)(yong)(yong)于煤礦(kuang)井(jing)下(xia)(xia)無(wu)甲烷和煤塵爆(bao)炸性(xing)氣體混合物場合，用(yong)(yong)(yong)于礦(kuang)山井(jing)下(xia)(xia)或地面的窄軌電(dian)機車牽引網路(lu)中，作為(wei)牽引網線路(lu)分段連接開(kai)關，供(gong)手(shou)動斷開(kai)、接通(tong)電(dian)源用(yong)(yong)(yong)
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