SIRIUS modular system - learn how to efficiently build & plan control systems

One system that helps you solve all switching tasks

The innovative SIRIUS modular system offers the largest available switching device portfolio in the market, with more than 50.000 tested and approved combinations.

A completely new generation of circuit breakers, contactors, overload relays and load feeders in seven sizes up to 250 kW is ready for use.

The benefit of the modular system lies in its modular set-up of the components across all sizes. Everything fits together. The SIRIUS modular system combines digital planning and a standard-compliant implementation for your requirement, regardless of the application or location. Comprehensive planning tools, consulting expertise, and tested product combinations will assist you in the transition from digital to actual control cabinet construction.

Efficient switching, protection, control and monitoring of motors

Today everything has to go faster. The trend toward digitalization increases the pressure on industry. What technologies should be used for starting and monitoring motors? Are there any tips and tricks for planning control cabinets more efficiently, while still complying with the standards?


Pure functionality


Proven system properties


Efficient planning and engineering

No matter what machine you are planning, we cover all applications for switching, protecting, starting and monitoring of motors. Whatever your application, be it standard or extreme as well as IE3/IE4motors, we cover all your requirements.
This functional diversity is covered by the SIRIUS modular system’s protection equipment and switching devices. They offer the highest performance-to-size ratio anywhere in the world, which saves valuable space in the control cabinet. In addition, tested combinations and perfectly coordinated components. The SIRIUS components always comply with current standards and fulfill the latest requirements on the market; therefore IE3/IE4-ready.

The strength of the system lies in its modular construction across all sizes, covering all applications thanks to comprehensive accessories. Wiring is reduced with the clip-on function modules for AS-i and IO-Link, and the optional bundling of up to four feeders per IO-Link channel shrinks the space requirement. Feedback messages from the load feeder ensure higher transparency, and it’s also possible to connect to energy management systems. A variety of monitoring functions and preventive maintenance increase plant availability.

Thanks to digitalization, we can offer many advantages to control panel designers for planning and engineering. Comprehensive data – including 3D models and macros for the leading CAE systems enable simple and error-free planning and system documentation. The components of the SIRIUS modular system are standard-compliant and tested for extreme operating conditions, making them suitable for use worldwide for all applications. Furthermore, in combination with our frequency converters we offer aligned and harmonized solutions.

A question of the combination

Achieving your goal more quickly and efficiently

If you’re looking to make your engineering process more efficient and substantially reduce the time spent on plant documentation, the SIRIUS modular system offers you a solution. You will receive comprehensive data supply for all common CAE systems and plant documentation at the press of a button, for complete digital planning or supplementary plant documentation, direct from the Siemens Industry Online Support (SIOS) for control cabinet planning. You also save time due to fast product selection with the TIA Selection Tool and the Industry Mall.

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