text.skipToContent text.skipToNavigation
 

Siemens safety relay with communication and simulation capability

For years, Siemens has been making it easy to implement local safety applications quickly and efficiently - with SIRIUS 3SK. The 3SK safety relays offer maximum functionality while saving space in the control cabinet.


Highlights


SIRIUS 3SK2 with Profinet

  • Seamless integration of safety applications at automation level 
  • Parameterisation and diagnosis from any location with Safety ES 
  • Installation information on all devices, such as smartphones


SIRIUS 3SK2 with SIRIUS SIM

  • Offline simulation of applications - finds the right component 
  • Create configurations and test without physical components!


Communication

The flexible, modular series of safety relays can be optionally extended with a Profinet communication module. This helps users seamlessly integrate safety applications into their automation systems. With the SIRIUS 3SK2 safety relay, you can easily configure multiple safety functions in one compact product. With the user-friendly drag & drop parameterisation software Safety ES, you can easily design and test safety functions and optionally simulate your design using SIRIUS SIM or diagnose the application. 
This opens up new possibilities without extensive wiring or programming. Profinet provides remote access to parameter settings and extensive diagnostic functions. This greatly simplifies commissioning and diagnosis, reducing or even eliminating downtimes. Machine operators can quickly access the specific factory information they need on the HMI or smartphone.


Simulation

Many machine builders are faced with the need to quickly and easily find the right component for their application. The free SIRIUS SIM 3SK2 simulator software gives users the chance to familiarise themselves with the wide range of functions in 3SK2 based on existing applications. Configurations can also be created and tested in the simulator. The ability to create and test configurations quickly and easily saves time and money during the engineering phase, as no physical components are required for simulation and applications can be modified with great ease and in a short time.


TIA Portal and Safety ES

Safety ES software can be integrated into TIA Portal in addition to the usual standalone use. This provides you with a unique combination between SIMATIC PLC control and 3SK2 safety relays.


Hardware

The 22.5mm SIRIUS 3SK2 is the narrowest software parameterisable safety relay on the market. It has 10 safe inputs, 2 safe and 1 signal outputs. This is sufficient to realise 3 to 4 safety functions directly with one module. With the 45 mm wide 3SK2 version, which has 20 safe inputs, 4 safe- and 2 signal outputs, you can even realise 6 to 8 safety functions. This version has a diagnostic display. The outputs of the 3SK2 can be independently assigned and controlled.


Applications

Typical applications for SIRIUS 3SK2 are emergency stop circuits, access (gate) monitoring, area monitoring and muting with light curtain or laser scanner. Additional safety applications can easily be realised according to your requirements. 


Easy to combine

Like the SIRIUS 3SK1 safety relay, the SIRIUS 3SK2 is easy to combine via connection adapters with 3SK1 output expansion modules and SIRIUS 3RM1 failsafe motor starters - even without additional wiring!


The SIRIUS 3SK safety relays can be seamlessly integrated into machine automation. This minimises the engineering and training impact and has a positive impact on system availability. Flexibility is guaranteed thanks to the modular design and user-friendly software interface of the 3SK safety relays.


SIRIUS 3SK2-PN Starterkit

Curious? Then try out the extra attractively priced starter kit of the 3SK2 with Profinet connection now.


 

Stay up to date with the latest news:

  • NEWS
    17 jul. 2025
    Siemens - Cybersecurity - Defense in Depth
    With the concept of ‘Defense in Depth,’ Siemens offers a layered security model that provides comprehensive and in-depth protection for industrial installations. This concept is based on the recommendations of IEC 62443, the world's leading standard for industrial cybersecurity.
    Read more
  • NEWS
    2 jun. 2025
    Siemens - SIRIUS 3RC7 ILM
    With the SIRIUS 3RC7 Intelligent Link Module (ILM), Siemens now offers a fast and easy way to achieve full data transparency down to the field level by making conventional motor starters intelligent. This plug-and-play extension module combines Information Technology (IT) and Operational Technology (OT) with minimal installation and commissioning effort. This allows the data available from field devices to be efficiently utilized.
    Read more
  • NEWS
    24 apr. 2025
    Siemens - Scalable and Flexible Safety Concepts
    Siemens offers a digital workflow that helps with every step of safe machine design. Through an integrated tool chain-from risk assessment and safety evaluation to hardware selection, engineering and validation-the process is streamlined and documentation efforts are minimised.
    Read more
  • NEWS
    4 apr. 2025
    News - Siemens - SIRIUS 8WD46 signal column
    High system availability and efficient engineering with this flexible signal column. Each segment individually configurable. Siemens has further expanded its portfolio of SIRIUS 8WD4 signal columns with a new high-performance signal column, which is electronically configurable as standard. Making it particularly easy to adapt to individual application requirements.
    Read more

Check out our other success stories:

  • TESTIMONIAL
    14 jul. 2025
    Sekisui Alveo
    Foam producer Sekisui Alveo has a large factory in Roermond. To support production and maintenance, warehouses and distribution points with thousands of different items are spread across the various halls. Think spare parts, personal protection equipment and consumables. The company cooperates intensively with itsme for management, such as recently with the step-by-step introduction of vendor managed inventory (VMI) for the grab stock of mechanical items.
    Read more
  • TESTIMONIAL
    18 jun. 2025
    IEC
    To control the expansion of a silo park, engineering & construction company IEC called on Breemes. Being involved in the engineering from the beginning, the electrical service provider was able to make smart proposals for both the low-voltage part and the PLC control. ‘We have always been able to find each other well and when changes occurred, we were quickly on the same page with Breemes.’
    Read more
  • TESTIMONIAL
    14 mei 2025
    Heliox - Charged for Delivery
    Heliox, a developer and manufacturer of charging systems for electric buses and trucks, was already working with itsme when production still took place in the Netherlands. Today, production has shifted to Slovakia, Portugal, and Moldova, and is also happening in the US. itsme remains the “irreplaceable” partner for the supply of electrical components and cable harnesses.
    Read more
  • TESTIMONIAL
    23 apr. 2025
    BLOK System Supply
    Blok System Supply and itsme have maintained an intensive relationship for many years. Early last year, this was further deepened with electronic data exchange via the Smart Connected Supplier Network. ‘It saves an enormous amount of time and reduces errors. We always have real-time information automatically.’ However, time for personal contact is not saved. ‘That is precisely what makes itsme a very nice party to work with.’
    Read more

Why not take a look at these trainings we offer: