九川變壓器主要生產機床控制變壓器(BK,JBK3,JBK4,JBK5,JCY3,JCY4,JCY5,JCY6,三相幹式變壓器,單相\三相伺服變壓器,隔離變壓器(JCY2,SG),整流變壓器(JBKZ,BKZ,ZSG),QZB自耦變壓器,行燈變壓器,電抗器,DG低電壓大電流變壓器,電力配電變壓器(S9,S11,SCB9,SCB10,SGB10),特種,防爆,礦用,勵磁整流變壓器,JCH13,JFD11,JFD16負載斷路開關,組合開關,JCX1,JLXK1,LX1,LX2,LX3,LX4,LX5,LXW5,LX6,LX10,LX12行程開關、刀開關、微動開關、電容器、無功補償裝置等