西门子软启动器可以限制起动电流和起动转矩，有效防止机械冲击以及电网电压降。通过相位控制降低电机电压，并能够在可调起动时间内将电机电压增加到电网电压。软起动和软停车可以保证连接设备上的应力最小化，确保生产运营平稳。采用两相控制的SIRIUS 3RW30/属于标准型，最适用于功率最大55KW的标准应用。3RW40也属于标准型，适用范围为75～250KW，3RW44属于高性能型产品，适用范围为15～1200KW。3RW40、3RW44都是西门子公司的新产品。
应用：
通风、泵、传送、压缩机、风机、混合机、铣床、碎石机。
西门子软启动器3RW系列型号：
3RW2122-1BG01
3RW4422-1BC44
3RW4443-6BC44
3RW2124-1BG01
3RW4422-1BC34
3RW4443-6BC34
3RW2125-1BG01
3RW4422-3BC44
3RW4456-2BC44
3RW2221-1AB15
3RW4422-3BC34
3RW4427-3BC34
3RW4443-2BC34
3RW4447-2BC34
3RW4447-6BC45
3RW4456-6BC45
3RW2225-1AB15
3RW4456-2BC45
3RW2227-1AB15
3RW4422-3BC35
3RW4427-3BC35
3RW4443-2BC35
3RW4447-2BC35
3RW4423-1BC35
3RW2242-0DB16
3RW4446-6BC46
3RW4455-6BC46
3RW4465-6BC46
3RW4426-3BC44
3RW2920-3AD00
3RW4426-1BC36
3RW2920-6LH00
3RW2920-6MC00
3RW2920-6ME00
3RW3003-1CB54
3RW3003-2CB54
3RW3024-1AB14
3RW3026-1AA12
3RW3035-1AB04
3RW3125-1CB15
3RW3126-1CB14
3RW3126-1CB15
3RW3452-0DC34
3RW3452-0DC35
3RW3454-0DC24
3RW3454-0DC25
3RW3454-0DC34
3RW3454-0DC35
3RW3454-0DC44
3RW3454-0DC45
3RW3455-0DC24
3RW3455-0DC25
3RW3455-0DC34
3RW3455-0DC35
3RW3455-0DC44
3RW3455-0DC45
3RW3457-0DC24
3RW3457-0DC25
3RW3457-0DC44
3RW3457-0DC45
3RW3458-0DC24
3RW3458-0DC25
3RW3458-0DC34
3RW3458-0DC35
3RW3458-0DC44
3RW3458-0DC45
3RW3465-0DC24
3RW3465-0DC25
3RW3465-0DC34
3RW3465-0DC35
3RW3465-0DC44
3RW3465-0DC45
3RW3466-0DC24
3RW3466-0DC25
3RW3466-0DC34
3RW3466-0DC35
3RW3466-0DC44
3RW3466-0DC45
3RW3467-0DC24
3RW3467-0DC25
3RW3467-0DC34
3RW3467-0DC35
3RW3467-0DC44
3RW3467-0DC45
3RW3468-0DC24
3RW3468-0DC25
3RW3468-0DC34
3RW3468-0DC35
3RW3468-0DC44
3RW3468-0DC45
3RW3472-0DC24
3RW3472-0DC35
3RW3472-0DC44
3RW3483-0DC24
3RW3483-0DC25
3RW3483-0DC34
3RW3483-0DC35
3RW3483-0DC44
3RW3483-0DC45
3RW3484-0DC24
3RW3484-0DC25
3RW3484-0DC34
3RW3484-0DC35
3RW3484-0DC44
3RW3484-0DC45
3RW3486-0DC44
3RW3486-0DC45
3RW3926-8A
3RW3936-8A
3RW3950-6DC28
3RW3950-6DC38
3RW3950-6DC48
3RW3950-8DC28
3RW3950-8DC48
3RW3960-8DC28
3RW3960-8DC48
3RW3970-8DC28
3RW3972-8DC28
3RW3973-8DC28
3RW3986-5DC85
3RW4055-2BB34
3RW4055-2BB35
3RW4055-2BB44
3RW4055-2BB45
3RW4055-6BB34
3RW4055-6BB35
3RW4055-6BB44
3RW4055-6BB45
3RW4056-2BB34
3RW4056-2BB35
3RW4056-2BB44
3RW4056-2BB45
3RW4056-6BB34
3RW4056-6BB35
3RW4056-6BB44
3RW4056-6BB45
3RW4073-2BB34
3RW4073-2BB35
3RW4073-2BB44
3RW4073-2BB45
3RW4073-6BB34
3RW4073-6BB35
3RW4073-6BB44
3RW4073-6BB45
3RW4074-2BB34
3RW4074-2BB35
3RW4074-2BB44
3RW4074-2BB45
3RW4074-6BB34
3RW4074-6BB35
3RW4074-6BB44
3RW4074-6BB45
3RW4075-2BB34
3RW4075-2BB35
3RW4075-2BB44
3RW4075-2BB45
3RW4075-6BB34
3RW4075-6BB35
3RW4075-6BB44
3RW4075-6BB45
3RW4076-2BB34
3RW4076-2BB35
3RW4076-2BB44
3RW4076-2BB45
3RW4076-6BB34
3RW4076-6BB35
3RW4076-6BB44
3RW4076-6BB45
3RW4422-1BC34
3RW4422-1BC35
3RW4422-1BC36
3RW4422-1BC44
3RW4422-1BC45
3RW4422-1BC46
3RW4422-3BC34
3RW4422-3BC35
3RW4422-3BC36
3RW4422-3BC44
3RW4422-3BC45
3RW4422-3BC46
3RW4423-1BC34
3RW4423-1BC35
3RW4423-1BC36
3RW4423-1BC44
3RW4423-1BC45
3RW4423-1BC46
3RW4423-3BC34
3RW4423-3BC35
3RW4423-3BC36
3RW4423-3BC44
3RW4423-3BC45
3RW4423-3BC46
3RW4424-1BC34
3RW4424-1BC35
3RW4424-1BC36
3RW4424-1BC44
3RW4424-1BC45
3RW4424-1BC46
3RW4424-3BC34
3RW4424-3BC35
3RW4424-3BC36
3RW4424-3BC44
3RW4424-3BC45
3RW4424-3BC46
3RW4425-1BC34
3RW4425-1BC35
3RW4425-1BC36
3RW4425-1BC44
3RW4425-1BC45
3RW4425-1BC46
3RW4425-3BC34
3RW4425-3BC35
3RW4425-3BC36
3RW4425-3BC44
3RW4425-3BC45
3RW4425-3BC46
3RW4426-1BC34
3RW4426-1BC35
3RW4426-1BC36
3RW4426-1BC44
3RW4426-1BC45
3RW4426-1BC46
3RW4426-3BC34
3RW4426-3BC35
3RW4426-3BC36
3RW4426-3BC44
3RW4426-3BC45
3RW4426-3BC46
3RW4427-1BC34
3RW4427-1BC35
3RW4427-1BC36
3RW4427-1BC44
3RW4427-1BC45
3RW4427-1BC46
3RW4427-3BC34
3RW4427-3BC35
3RW4427-3BC36
3RW4427-3BC44
3RW4427-3BC45
3RW4427-3BC46
3RW4434-2BC34
3RW4434-2BC35
3RW4434-2BC36
3RW4434-2BC44
3RW4434-2BC45
3RW4434-2BC46
3RW4434-6BC34
3RW4434-6BC35
3RW4434-6BC36
3RW4434-6BC44
3RW4434-6BC45
3RW4434-6BC46
3RW4435-2BC34
3RW4435-2BC35
3RW4435-2BC36
3RW4435-2BC44
3RW4435-2BC45
3RW4435-2BC46
3RW4435-6BC34
3RW4435-6BC35
3RW4435-6BC36
3RW4435-6BC44
3RW4435-6BC45
3RW4435-6BC46
3RW4436-2BC34
3RW4436-2BC35
3RW4436-2BC36
3RW4436-2BC44
3RW4436-2BC45
3RW4436-2BC46
3RW4436-6BC34
3RW4436-6BC35
3RW4436-6BC36
3RW4436-6BC44
3RW4436-6BC45
3RW4436-6BC46
3RW4443-2BC34
3RW4443-2BC35
3RW4443-2BC36
3RW4443-2BC44
3RW4443-2BC45
3RW4443-2BC46
3RW4443-6BC34
3RW4443-6BC35
3RW4443-6BC36
3RW4443-6BC44
3RW4443-6BC45
3RW4443-6BC46
3RW4444-2BC34
3RW4444-2BC35
3RW4444-2BC36
3RW4444-2BC44
3RW4444-2BC45
3RW4444-2BC46
3RW4444-6BC34
3RW4444-6BC35
3RW4444-6BC36
3RW4444-6BC44
3RW4444-6BC45
3RW4444-6BC46
3RW4445-2BC34
3RW4445-2BC35
3RW4445-2BC36
3RW4445-2BC44
3RW4445-2BC45
3RW4445-2BC46
3RW4445-6BC34
3RW4445-6BC35
3RW4445-6BC36
3RW4445-6BC44
3RW4445-6BC45
3RW4445-6BC46
3RW4446-2BC34
3RW4446-2BC35
3RW4446-2BC36
3RW4446-2BC44
3RW4446-2BC45
3RW4446-2BC46
3RW4446-6BC34
3RW4446-6BC35
3RW4446-6BC36
3RW4446-6BC44
3RW4446-6BC45
3RW4446-6BC46
3RW4447-2BC34
3RW4447-2BC35
3RW4447-2BC36
3RW4447-2BC44
3RW4447-2BC45
3RW4447-2BC46
3RW4447-6BC34
3RW4447-6BC35
3RW4447-6BC36
3RW4447-6BC44
3RW4447-6BC45
3RW4447-6BC46
