软启动器采用三相反并联晶闸管作为调压器，用这种电路如三相全控桥式整流电路，使用软启动器启动电动机时，晶闸管的输出电压逐渐增加，电动机逐渐加速，直到晶闸管全导通，电动机工作在额定电压的机械特性上，实现平滑启动，降低启动电流，避免启动过流跳闸。将其接入电源和电动机定子之间
河南四方恒业销售西门子3RW软启动 孙杰 电话0371-56605206手机13838084023
型号 电流 功率
3RW30161BB14 9 4
3RW30171BB14 12.5 5.5
3RW30181BB14 17.6 7.5
3RW30261BB14 25 11
3RW30271BB14 32 15
3RW30281BB14 38 18.5
3RW30361BB14 45 22
3RW30371BB14 63 30
3RW30381BB14 72 37
3RW30461BB14 80 45
3RW30471BB14 106 55
3RW40241BB14 12.5 5.5
3RW40261BB14 25 11
3RW40271BB14 32 15
3RW40281BB14 38 18.5
3RW40361BB14 45 22
3RW40371BB14 63 30
3RW40381BB14 72 37
3RW40461BB14 80 45
3RW40471BB14 106 55
3RW40556BB44 134 75
3RW40566BB44 162 90
3RW40736BB44 230 132
3RW40746BB44 280 160
3RW40756BB44 356 200
3RW40766BB44 432 250
3RW44221BC44 29 15
3RW44231BC44 36 18.5
3RW44241BC44 47 22
3RW44251BC44 57 30
3RW44261BC44 77 37
3RW44271BC44 93 45
3RW44346BC44 113 55
3RW44356BC44 134 75
3RW44366BC44 162 90
3RW44436BC44 203 110
3RW44446BC44 250 132
3RW44456BC44 313 160
3RW44466BC44 356 200
3RW44476BC44 432 250
3RW44536BC44 551 315
3RW44546BC44 615 355
3RW44556BC44 693 400
3RW44566BC44 780 450
3RW44576BC44 880 500
3RW44586BC44 970 560
3RW44656BC44 1076 630
3RW44666BC44 1214 710
