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Soft starters for high-feature applications

Soft starters for high-feature applications, often referred to as motor soft starters or solid-state starters, are advanced devices designed to control the acceleration and deceleration of three-phase induction motors. These units typically feature a compact design with integrated graphics viewers for real-time monitoring, torque control via clo...

Soft starters for high-feature applications, often referred to as motor soft starters or solid-state starters, are advanced devices designed to control the acceleration and deceleration of three-phase induction motors. These units typically feature a compact design with integrated graphics viewers for real-time monitoring, torque control via closed-loop communication links, and support for industrial protocols like PROFIBUS. Key technical specifications include rated operational voltages up to 690 V AC, current ratings from a few amps to over 1000 A, and adjustable ramp times for starting and stopping. They are engineered to handle high-inertia loads and difficult start conditions, reducing mechanical stress and electrical surges.

These soft starters are primarily deployed in industrial environments such as pump stations, conveyor systems, compressors, and HVAC installations. They are ideal for applications requiring precise torque control and soft stopping, including water treatment plants, mining operations, and manufacturing lines. Their robust design ensures reliable performance in harsh conditions, with IP ratings typically ranging from IP20 to IP54 for panel or standalone mounting.

Subcategories within this range include standard soft starters for general applications, high-feature starters with advanced diagnostics, and compact units for space-constrained panels. Key article codes often follow a pattern like 3RW5xxx for Siemens Sirius series, where the digits indicate current rating, voltage class, and communication options. For example, the 3RW5076-0AB14 is a common model for 200-480 V applications with PROFIBUS interface.

Our business benefits include express worldwide shipping and dedicated support from specialized electrical engineers. We provide real-time pricing, technical documentation for each article, and personalized assistance for selection and commissioning, ensuring optimal performance and reduced downtime.

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Manufacturer Code Reference Catalog Number Description Delivery Price

3ZS1320-4CE10-0YB5

3ZS1320-4CE10-0YB5

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SIRIUS Soft Starter ES V14 Basic Floating license for 1 user Only license without software, without documentation License key download, Class A 6 languages (de,de, fr, enit, fr,sp,cn) Executable in: Win 7 SP1/Win 8.1/ Win 10 - 64 bit; Win Server 2008 R2

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3ZS1320-5CC10-0YD5

3ZS1320-5CC10-0YD5

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SIRIUS Soft Starter ES V14 Standard Power Pack for Soft Starter ES V14 Basic Floating license for one user Engineering software, without Software, without documentation License key on USB flash drive, Cl. A, 6 languages (de,de, fr, enit, fr,sp,cn) Executa

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3RW4422-1BC35

3RW4422-1BC35

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SIRIUS soft starter Values at 575 V, 50 °C standard: 26 A, 20 hp Inside-delta: 45 A, 40 hp 400-600 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-1HA15<

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3RW4422-1BC44

3RW4422-1BC44

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SIRIUS soft starter Values at 400 V, 40 °C standard: 29 A, 15 kW Inside-delta: 50 A, 22 kW 200-460 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-1HA14<

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3RW4422-1BC34

3RW4422-1BC34

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SIRIUS soft starter Values at 460 V, 50 °C standard: 26 A, 15 hp Inside-delta: 45 A, 30 hp 200-460 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-1HA14<

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3RW4422-1BC36

3RW4422-1BC36

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SIRIUS soft starter Values at 575 V, 50 °C standard: 26 A, 20 hp Inside-delta: 45 A, 40 hp 400-690 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 29A, 30KW ) Vm: 115V AC, screw connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4422-3BC34

3RW4422-3BC34

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SIRIUS soft starter Values at 460 V, 50 °C standard: 26 A, 15 hp Inside-delta: 45 A, 30 hp 200-460 V AC, 115 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-3HA14<

SIRIUS High performance electronic starter 200 - 460 V AC/400 V, 40ºC, CLASS10 : (c. standard: 29A, 15KW, c. root of 3: 50A, 22KW ) Vm: 115V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4422-3BC44

3RW4422-3BC44

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SIRIUS soft starter Values at 400 V, 40 °C standard: 29 A, 15 kW Inside-delta: 50 A, 22 kW 200-460 V AC, 230 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-3HA14<

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3RW4422-3BC35

3RW4422-3BC35

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SIRIUS soft starter Values at 575 V, 50 °C standard: 26 A, 20 hp Inside-delta: 45 A, 40 hp 400-600 V AC, 115 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-3HA15<

SIRIUS High performance electronic starter 400 - 600 V AC/500 V, 40ºC, CLASS10 : (c. standard: 29A, 18,5KW, c. root of 3: 50A, 30KW ) Vm:115V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4422-3BC36

3RW4422-3BC36

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SIRIUS soft starter Values at 575 V, 50 °C standard: 26 A, 20 hp Inside-delta: 45 A, 40 hp 400-690 V AC, 115 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-3HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 29A, 30KW ) Vm: 115V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4422-1BC45

3RW4422-1BC45

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SIRIUS soft starter Values at 500 V, 40 °C standard: 29 A, 18.5 kW Inside-delta: 50 A, 30 kW 400-600 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-1HA15<

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3RW4422-1BC46

3RW4422-1BC46

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SIRIUS soft starter Values at 690 V, 40 °C standard: 29 A, 30 kW Inside-delta: only up to 600 V 400-690 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 29A, 30KW ) Vm:230V AC, screw connection. Manufactured to order. Non-Cancelable Non-Returnable.

 		3 View Availability View Price

3RW4422-3BC45

3RW4422-3BC45

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SIRIUS soft starter Values at 500 V, 40 °C standard: 29 A, 18.5 kW Inside-delta: 50 A, 30 kW 400-600 V AC, 230 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5516-3HA15<

SIRIUS High performance electronic starter 400 - 600 V AC/500 V, 40ºC, CLASS10 : (c. standard: 29A, 18,5KW, c. root of 3: 50A, 30KW ) Vm:230V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4422-3BC46

3RW4422-3BC46

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SIRIUS soft starter Values at 690 V, 40 °C standard: 29 A, 30 kW Inside-delta: only up to 600 V 400-690 V AC, 230 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-3HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 29A, 30KW ) Vm:230V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-1BC34

3RW4423-1BC34

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SIRIUS soft starter Values at 460 V, 50 °C standard: 32 A, 20 hp Inside-delta: 55 A, 40 hp 200-460 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-1HA14<

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3RW4423-1BC36

3RW4423-1BC36

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SIRIUS soft starter Values at 575 V, 50 °C standard: 32 A, 25 hp Inside-delta: 55 A, 50 hp 400-690 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 36A, 37KW ) Vm:115V AC, screw connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-1BC44

3RW4423-1BC44

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SIRIUS soft starter Values at 400 V, 40 °C standard: 36 A, 18.5 kW Inside-delta: 62 A, 30 kW 200-460 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-1HA14<

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3RW4423-1BC45

3RW4423-1BC45

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SIRIUS soft starter Values at 500 V, 40 °C standard: 36 A, 22 kW Inside-delta: 62 A, 37 kW 400-600 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-1HA15<

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3RW4423-1BC46

3RW4423-1BC46

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SIRIUS soft starter Values at 690 V, 40 °C standard: 36 A, 37 kW Inside-delta: only up to 600 V 400-690 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 36A, 37KW ) Vm: 230V AC, screw connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-1BC35

3RW4423-1BC35

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SIRIUS soft starter Values at 575 V, 50 °C standard: 32 A, 25 hp Inside-delta: 55 A, 50 hp 400-600 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-1HA15<

SIRIUS High performance electronic starter 400 - 600 V AC/500 V, 40ºC, CLASS10 : (c. standard: 36A, 22KW, c. root of 3: 62A, 37KW ) Vm: 115V AC, screw connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-3BC34

3RW4423-3BC34

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SIRIUS soft starter Values at 460 V, 50 °C standard: 32 A, 20 hp Inside-delta: 55 A, 40 hp 200-460 V AC, 115 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-3HA14<

SIRIUS High performance electronic starter 200 - 460 V AC/400 V, 40ºC, CLASS10 : (c. standard: 36A, 18,5KW, c. root of 3: 62A, 30KW ) Vm:115V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-3BC35

3RW4423-3BC35

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SIRIUS soft starter Values at 575 V, 50 °C standard: 32 A, 25 hp Inside-delta: 55 A, 50 hp 400-600 V AC, 115 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-3HA15<

SIRIUS High performance electronic starter 400 - 600 V AC/500 V, 40ºC, CLASS10 : (c. standard: 36A, 22KW, c. root of 3: 62A, 37KW ) Vm: 115V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-3BC36

3RW4423-3BC36

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SIRIUS soft starter Values at 575 V, 50 °C standard: 32 A, 25 hp Inside-delta: 55 A, 50 hp 400-690 V AC, 115 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-3HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 36A, 37KW ) Vm:115V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-3BC45

3RW4423-3BC45

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SIRIUS soft starter Values at 500 V, 40 °C standard: 36 A, 22 kW Inside-delta: 62 A, 37 kW 400-600 V AC, 230 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-3HA15<

SIRIUS High performance electronic starter 400 - 600 V AC/500 V, 40ºC, CLASS10 : (c. standard: 36A, 22KW, c. root 3: 62A, 37KW ) Vm: 230V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-3BC46

3RW4423-3BC46

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SIRIUS soft starter Values at 690 V, 40 °C standard: 36 A, 37 kW Inside-delta: only up to 600 V 400-690 V AC, 230 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-3HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (standard c. 36A, 37KW ) Vm:230V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4424-1BC34

3RW4424-1BC34

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SIRIUS soft starter Values at 460 V, 50 °C standard: 42 A, 25 hp Inside-delta: 73 A, 50 hp 200-460 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA14<

SIRIUS High performance electronic starter 200 - 460 V AC/400 V, 40ºC, CLASS10 : (standard c. : 47A, 22KW, root c. 3: 81A, 45KW ) Vm: 115V AC, screw connection

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3RW4424-1BC36

3RW4424-1BC36

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SIRIUS soft starter Values at 575 V, 50 °C standard: 42 A, 30 hp Inside-delta: 73 A, 60 hp 400-690 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<

SIRIUS High performance electronic starter 400 - 690 V AC/690 V, 40ºC, CLASS10 : (c. standard: 47A, 45KW ) Vm:115V AC, screw connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4423-3BC44

3RW4423-3BC44

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SIRIUS soft starter Values at 400 V, 40 °C standard: 36 A, 18.5 kW Inside-delta: 62 A, 30 kW 200-460 V AC, 230 V AC spring-type terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5517-3HA14<

SIRIUS High performance electronic starter 200 - 460 V AC/400 V, 40ºC, CLASS10 : (c. standard: 36A, 18,5KW, c. root of 3: 62A, 30KW ) Vm:230V AC, spring connection. Manufactured to order. Non-Cancelable Non-Returnable.

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3RW4424-1BC35

3RW4424-1BC35

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SIRIUS soft starter Values at 575 V, 50 °C standard: 42 A, 30 hp Inside-delta: 73 A, 60 hp 400-600 V AC, 115 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<

SIRIUS High performance electronic starter 400 - 600 V AC/500 V, 40ºC, CLASS10 : (standard c. : 47A, 30KW, root c. 3: 81A, 45KW ) Vm: 115V AC, screw connection

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3RW4424-1BC44

3RW4424-1BC44

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SIRIUS soft starter Values at 400 V, 40 °C standard: 47 A, 22 kW Inside-delta: 81 A, 45 kW 200-460 V AC, 230 V AC Screw terminals !!! Phased-out product !!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA14<

SIRIUS High performance electronic starter 200 - 460 V AC/400 V, 40ºC, CLASS10 : (c. standard: 47A, 22KW, c. root of 3: 81A, 45KW ) Vm: 230V AC, screw connection

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