Siemens has extended its Sirius Modular System portfolio with the addition of a new high-capacity size

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·Compact design, with a width of only 70 mm, and suitability for currents of up to 110/125 A and power of up to 75 HP/480V

·Ability to create more than 45,000 type-tested combinations

·Portfolio with matching switching, protecting, and monitoring devices

Siemens has extended its Sirius Modular System portfolio with a new series of flexible devices. The switching, pro­tecting, and monitoring devices in size S3 have a capacity of up to 75 HP/480 V and amperage of 110/125 A despite their narrow installation width of only 70 mm. These new devices allow for a particularly compact set-up and fulfill the requirement of space-saving compo­nents for modern plant and machine manufacturing.


The accessories for sizes S00, S0, and S2 that are already featured in the series are compatible with the new size S3. It is therefore possible to easily connect the new devices to open AS-Interface and IO-Link systems with push-in function modules. For example, a current monitoring relay that can be integrated into the feeder facilitates direct monitoring and control of the application. Logic modules reduce the wiring effort and also minimize the risk of wiring errors. The function modules make it possible to connect the unit to the control system in the Totally Integrated Automation (TIA) environment without the effort commonly associated with this task.


The Sirius Modular System is an essential component of the control cabinet. In addition to the many different possi­bilities for combining individual products, extensive configuration data, such as CAx data for digital planning and Siemens’ detailed standards expertise, make the control cabinet designer’s work considerably easier.

Siemens Digital Factory offers a comprehensive portfolio of seamlessly integrated hardware, software and technology-based services in order to support manufacturing companies worldwide in enhancing the flexibility and efficiency of their manufacturing processes and reducing the time to market of their products.


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