24 volts nonstop – with each SITOP power supply

SITOP power supply

Thanks to their high reliability, our SITOP power supply units are globally recognized for their high reliability and for their coping with critical network conditions. Our full range of switched-mode power supply units provides a controlled 24 V DC power supply and other input voltages. Our unique spectrum of DC UPS and add-on modules extends our power supply range to protect the 24 V supply against mains problems and problems on the DC side. SITOP is also top-notch when it comes to efficiency, thanks to an efficiency rating of up to 95%, for example, tools to make product selection and ordering quick and easy, and comprehensive support for your design processes.

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Top integration. Top efficiency. Top reliability.


And in terms of integration, complete integration in Totally Integrated Automation and the TIA Portal via PROFINET gives you unique opportunities for engineering and diagnostics. Top integration. Top efficiency. Top reliability. SITOP

SITOP anniversary, jan 1, 2018

25 years of SITOP – the heart of automation

For 25 years, SITOP has been reliably supplying the right voltage to countless plants in the manufacturing and process industry around the world. Join us in celebrating the anniversary of our innovative power supplies – and save 25% with our two exclusive SITOP anniversary packages!

Trends & Topics

SITOP power supply highlights

An efficient power supply is a basic requirement for operating any plant, no matter the industry or need. Critical production processes can only be maintained if a constant power supply of the necessary quality is available for the automation system. SITOP has proven its value in the manufacturing environment over many years, and is always setting new standards in terms of integration, efficiency and reliability.
Downloads, Support, Services

Additional information for all cases

Download brochures, flyers and ordering documentation with more details on the SITOP power supply units here. Support links take you to SITOP-specific references, FAQs, manuals, product notes and technical data. Discover our range of practical services at the same time.

The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support

The fastest way to the experts

Special investigations analyze the causes of problems that have been occurring more frequently with no explanation.

Logistical handling of returned goods from service processes

Central returns processing at the Service Logistics Center in Erlangen        
Return delivery address: Siemens AG Retouren Center c/o Geis Industrie-Service GmbH, Tor 1-4, Kraftwerkstr. 25a, 91056 Erlangen, Germany

References & applications

You can have a bad history with your power supply. Or you can write history with it.

More than twenty years ago, Siemens began a unique success story in the power supply sector. Since then, SITOP has demonstrated in countless installations how reliability, efficiency, and integration can be guaranteed permanently at the highest level in all industrial sectors. SITOP has also shown it is able to deal with all applications.
News & events

You can choose to ignore good news. Or you can read it.

Stay up to date. We’ll provide you with regular information about new SITOP product developments, functional expansions, trade fairs and events here.


You can invest a lot in your power supply. Or you can profit from it.

SITOP is a complete, perfectly coordinated portfolio offering you a reliable power supply that will meet today’s increasing demands. And we are continuing to refine our SITOP power supply units to make sure it continues to do so. Stay up to date. Top integration. Top efficiency. Top reliability. SITOP

If you would like to know more about our SITOP power supply units:

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