Soft Starter

The electronic soft starter STJR allows smooth starting and stopping of three-phase motors. The soft starter's power ranges from 5.5 to 500 kW, operates according to a sophisticated control method with a powerful Philips chipset. It prevents mechanical shocks in machinery and voltage dips in the power supply. The softstarter accelerates gently and adjusts the engine torque according to the load characteristics of the machine. The classic star-delta function can be easily replaced. You can install the removable components in different places. With 6 digital inputs and outputs, as well as 6 different start options, an analogue output and an RS485 interface allows optimal integration into existing systems. All in all, the STJR-Softstarter is ideal for pumps, fans, cranes and lifting equipment, as well as conveyor belts and other engines. The variable control of the motor voltage in the starting phase leads to less wear and tear longer as well as increasing the life span of your fan and pump drives. More soft start applications: conveyor system, heat pump, vacuum pump, fan, saw, milling machine, dryer, elevator, door and gate openers, pump, crane, compressor, agitator, centrifuge, pressure washers, etc.

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  1. Siemens Softstarter SIRIUS 3RW4076-6BB44
    Siemens Softstarter SIRIUS 3RW4076-6BB45
    €2,490.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 250 kW
    • Output power for 500V three-phase motor: 315 kW
    • Operating current: 432 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  2. Siemens Softstarter SIRIUS 3RW4075-2BB44
    Siemens Softstarter SIRIUS 3RW4075-2BB45
    €1,900.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 200 kW
    • Output power for 500V three-phase motor: 250 kW
    • Operating current: 356 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  3. Siemens Softstarter SIRIUS 3RW4075-2BB45
    Siemens Softstarter SIRIUS 3RW4075-6BB34
    €1,650.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 110 kW
    • Output power for 400V three-phase motor: 200 kW
    • Operating current: 315 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  4. Siemens Softstarter SIRIUS 3RW4075-6BB34
    Siemens Softstarter SIRIUS 3RW4075-6BB35
    €1,900.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 200 kW
    • Output power for 500V three-phase motor: 250 kW
    • Operating current: 315 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  5. Siemens Softstarter SIRIUS 3RW4075-6BB35
    Siemens Softstarter SIRIUS 3RW4075-6BB44
    €1,650.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 110 kW
    • Output power for 400V three-phase motor: 200 kW
    • Operating current: 356 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  6. Siemens Softstarter SIRIUS 3RW4075-6BB44
    Siemens Softstarter SIRIUS 3RW4075-6BB45
    €1,900.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 200 kW
    • Output power for 500V three-phase motor: 250 kW
    • Operating current: 356 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  7. Siemens Softstarter SIRIUS 3RW4075-6BB45
    Siemens Softstarter SIRIUS 3RW4076-2BB34
    €2,180.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 132 kW
    • Output power for 400V three-phase motor: 250 kW
    • Operating current: 385 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  8. Siemens Softstarter SIRIUS 3RW4076-2BB34
    Siemens Softstarter SIRIUS 3RW4076-2BB35
    €2,490.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 250 kW
    • Output power for 500V three-phase motor: 315 kW
    • Operating current: 385 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  9. Siemens Softstarter SIRIUS 3RW4076-2BB35
    Siemens Softstarter SIRIUS 3RW4076-2BB45
    €2,490.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 250 kW
    • Output power for 500V three-phase motor: 315 kW
    • Operating current: 432 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  10. Siemens Softstarter SIRIUS 3RW4076-2BB45
    Siemens Softstarter SIRIUS 3RW4076-2BB44
    €2,180.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 132 kW
    • Output power for 400V three-phase motor: 250 kW
    • Operating current: 432 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  11. Siemens Softstarter SIRIUS 3RW4076-2BB45
    Siemens Softstarter SIRIUS 3RW4076-6BB34
    €2,180.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 132 kW
    • Output power for 400V three-phase motor: 250 kW
    • Operating current: 385 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  12. Siemens Softstarter SIRIUS 3RW4076-6BB34
    Siemens Softstarter SIRIUS 3RW4076-6BB35
    €2,490.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 250 kW
    • Output power for 500V three-phase motor: 315 kW
    • Operating current: 385 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  13. Siemens Softstarter SIRIUS 3RW4076-6BB35
    Siemens Softstarter SIRIUS 3RW4076-6BB44
    €2,180.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 132 kW
    • Output power for 400V three-phase motor: 250 kW
    • Operating current: 432 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  14. Siemens Softstarter SIRIUS 3RW4075-2BB35
    Siemens Softstarter SIRIUS 3RW4075-2BB44
    €1,650.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 110 kW
    • Output power for 400V three-phase motor: 200 kW
    • Operating current: 356 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  15. Siemens Softstarter SIRIUS 3RW4075-2BB34
    Siemens Softstarter SIRIUS 3RW4075-2BB35
    €1,900.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 200 kW
    • Output power for 500V three-phase motor: 250 kW
    • Operating current: 315 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  16. Siemens Softstarter SIRIUS 3RW4073-2BB34
    Siemens Softstarter SIRIUS 3RW4073-2BB35
    €1,450.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 132 kW
    • Output power for 500V three-phase motor: 160 kW
    • Operating current: 205 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  17. Siemens Softstarter SIRIUS 3RW4073-6AB44
    Siemens Softstarter SIRIUS 3RW4073-6BB34
    €1,250.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 75 kW
    • Output power for 400V three-phase motor: 132 kW
    • Operating current: 205 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  18. Siemens Softstarter SIRIUS 3RW4073-6BB35
    Siemens Softstarter SIRIUS 3RW4073-6BB44
    €1,250.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 75 kW
    • Output power for 400V three-phase motor: 132 kW
    • Operating current: 230 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  19. Siemens Softstarter SIRIUS 3RW4073-6BB44
    Siemens Softstarter SIRIUS 3RW4073-6BB45
    €1,450.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 132 kW
    • Output power for 500V three-phase motor: 160 kW
    • Operating current: 230 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  20. Siemens Softstarter SIRIUS 3RW4073-6BB45
    Siemens Softstarter SIRIUS 3RW4074-2BB34
    €1,410.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 90 kW
    • Output power for 400V three-phase motor: 160 kW
    • Operating current: 248 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  21. Siemens Softstarter SIRIUS 3RW4074-2BB34
    Siemens Softstarter SIRIUS 3RW4074-2BB35
    €1,610.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 160 kW
    • Output power for 500V three-phase motor: 200 kW
    • Operating current: 248 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  22. Siemens Softstarter SIRIUS 3RW4074-2BB35
    Siemens Softstarter SIRIUS 3RW4074-2BB44
    €1,410.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 90 kW
    • Output power for 400V three-phase motor: 160 kW
    • Operating current: 280 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  23. Siemens Softstarter SIRIUS 3RW4074-2BB44
    Siemens Softstarter SIRIUS 3RW4074-2BB45
    €1,610.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 160 kW
    • Output power for 500V three-phase motor: 200 kW
    • Operating current: 280 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More
  24. Siemens Softstarter SIRIUS 3RW4074-6BB45
    Siemens Softstarter SIRIUS 3RW4075-2BB34
    €1,650.00
    • 3-phase Softstarter
    • Output power for 230V three-phase motor: 110 kW
    • Output power for 400V three-phase motor: 200 kW
    • Operating current: 315 A
    • Control supply voltage: 115V AC
    • Size of engine control device: S12
    Learn More
  25. Siemens Softstarter SIRIUS 3RW4074-6BB44
    Siemens Softstarter SIRIUS 3RW4074-6BB45
    €1,610.00
    • 3-phase Softstarter
    • Output power for 400V three-phase motor: 160 kW
    • Output power for 500V three-phase motor: 200 kW
    • Operating current: 280 A
    • Control supply voltage: 230V AC
    • Size of engine control device: S12
    Learn More

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