西门子软启动器3RW3系列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小化，确保生产运营平稳。采用两相控制的SIRIUS3RW30/属于标准型，适用于功率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

3RW4456-2BC34

3RW2223-1AB15

3RW4422-1BC45

3RW4427-1BC45

3RW4443-6BC45

3RW4447-6BC45

3RW4456-6BC45

3RW2225-1AB15

3RW4422-1BC35

3RW4427-1BC35

3RW4443-6BC35

3RW4447-6BC35

3RW4456-6BC35

3RW2226-1AB15

3RW4422-3BC45

3RW4427-3BC45

3RW4443-2BC45

3RW4447-2BC45

3RW4456-2BC45

3RW2227-1AB15

3RW4422-3BC35

3RW4427-3BC35

3RW4443-2BC35

3RW4447-2BC35

3RW4456-2BC35

3RW2228-1AB15

3RW4422-1BC46

3RW4427-1BC46

3RW4443-6BC46

3RW4447-6BC46

3RW4456-6BC46

3RW2230-1AB15

3RW4422-1BC36

3RW4427-1BC36

3RW4443-6BC36

3RW4447-6BC36

3RW4456-6BC36

3RW2231-1AB15

3RW4422-3BC46

3RW4427-3BC46

3RW4443-2BC46

3RW4447-2BC46

3RW4456-2BC46

3RW2234-0DB15

3RW4422-3BC36

3RW4427-3BC36

3RW4443-2BC36

3RW4447-2BC36

3RW4456-2BC36

3RW2235-0DB15

3RW4423-1BC44

3RW4434-6BC44

3RW4444-6BC44

3RW4453-6BC44

3RW4457-6BC44

3RW2236-0DB15

3RW4423-1BC34

3RW4434-6BC34

3RW4444-6BC34

3RW4453-6BC34

3RW4457-6BC34

3RW2236-0DB16

3RW4423-3BC44

3RW4434-2BC44

3RW4444-2BC44

3RW4453-2BC44

3RW4457-2BC44

3RW2236-0DB18

3RW4423-3BC34

3RW4434-2BC34

3RW4444-2BC34

3RW4453-2BC34

3RW4457-2BC34

3RW2238-0DB15

3RW4423-1BC45

3RW4434-6BC45

3RW4444-6BC45

3RW4453-6BC45

3RW4457-6BC45

3RW2238-0DB16

3RW4423-1BC35

3RW4434-6BC35

3RW4444-6BC35

3RW4453-6BC35

3RW4457-6BC35

3RW2240-0DB15

3RW4423-3BC45

3RW4434-2BC45

3RW4444-2BC45

3RW4453-2BC45

3RW4457-2BC45

3RW2240-0DB16

3RW4423-3BC35

3RW4434-2BC35

3RW4444-2BC35

3RW4453-2BC35

3RW4457-2BC35

3RW2240-0DB18

3RW4423-1BC46

3RW4434-6BC46

3RW4444-6BC46

3RW4453-6BC46

3RW4457-6BC46

3RW2241-0DB15

3RW4423-1BC36

3RW4434-6BC36

3RW4444-6BC36

3RW4453-6BC36

3RW4457-6BC36

3RW2242-0DB14

3RW4423-3BC46

3RW4434-2BC46

3RW2242-0DB15

3RW4423-3BC36

3RW2242-0DB16

3RW4424-1BC44

3RW4435-6BC44

3RW4445-6BC44

3RW4454-6BC44

3RW4458-6BC44

3RW2242-0DB18

3RW4424-1BC34

3RW4435-6BC34

3RW4445-6BC34

3RW4454-6BC34

3RW4458-6BC34

3RW2243-0DB14

3RW4424-3BC44

3RW4435-2BC44

3RW4445-2BC44

3RW4454-2BC44

3RW4458-2BC44

3RW2243-0DB15

3RW4424-3BC34

3RW4435-2BC34

3RW4445-2BC34

3RW4454-2BC34

3RW4458-2BC34

3RW2243-0DB16

3RW4424-1BC45

3RW4435-6BC45

3RW4445-6BC45

3RW4454-6BC45

3RW4458-6BC45

3RW2245-0DB14

3RW4424-1BC35

3RW4435-6BC35

3RW4445-6BC35

3RW4454-6BC35

3RW4458-6BC35

3RW2245-0DB15

3RW4424-3BC45

3RW4435-2BC45

3RW4445-2BC45

3RW4454-2BC45

3RW4458-2BC45

3RW2247-0DB14

3RW4424-3BC35

3RW4435-2BC35

3RW4445-2BC35

3RW4454-2BC35

3RW4458-2BC35

3RW2247-0DB15

3RW4424-1BC46

3RW4435-6BC46

3RW4445-6BC46

3RW4454-6BC46

3RW4458-6BC46

3RW2247-0DB16

3RW4424-1BC36

3RW443