You can find the installation files at the Siemens SIOS Support Page .
The core engine for device configuration.
If you are working with , Compact , or older protection devices, having the right engineering software is non-negotiable. Siemens DIGSI 4.95 remains one of the most stable and widely used versions for configuring, parameterizing, and operating these critical industrial components.
DIGSI 4 is an intuitive PC-based user interface designed for the management of protection relays. It simplifies complex tasks like protection settings and commissioning through features like a visual and Continuous Function Chart (CFC) logic, which allows you to project logic without advanced programming knowledge. Key Components Included in the Full Version:
Whether you're looking for a fresh install or an upgrade, here is everything you need to know about downloading and setting up DIGSI 4.95. What is Siemens DIGSI 4?
Before starting your download, ensure your hardware meets these standards for optimal performance: Minimum Requirement Recommended 1 GHz (Intel Pentium IV) Modern x86-64 (Core i5/i7) RAM 4 GB - 16 GB+ Storage Space 4 GB (Installation only) 32 GB SSD (for projects/archiving) Display 1024 x 768 1920 x 1200 OS Windows 7 / 10 (64-Bit) Windows 10 Professional
If you do not have a license key, you can enter the word "Trial" as the serial number during setup to activate a fully functional 30-day trial period. System Requirements for Installation