Soft Starter


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The soft starters of the Sirius 3RW5 product family encompass twelve sizes with different power classes for controlling three-phase motors. In spite of the different sizes and materials used, the devices of this product family convey harmony and visual coherence. All interfaces are concealed behind front flaps, while duct covers and recesses are used to clearly route cables. Users can choose between two different interfaces, which can be inserted into the pre-cut front flap.

Statement by the Jury

The device family Sirius 3RW5 impresses with compact dimensions and functional clarity, radiating efficiency and high performance.

  • Manufacturer:
    Siemens AG, Nuremberg, Germany
  • In-house design:
    Frank Zeitler
  • Design:
    at-design GbR, Christoph Tomczak , Fürth, Germany