User-friendly safety relays

The Sirius 3SK2 safety relay from ­Siemens offers multiple safety functions in the smallest of spaces. Thanks to the user-friendly drag & drop parameterization interface, it is simple to create safety functions that can be optionally expanded to include test and diagnostics functions. ­Sirius 3SK2 safety relays come in two different variants – the 22.5-millimeter-wide device, which comes with up to four safety functions, is slimmer than any other software-parameterizable safety relay currently available on the market, while the 45-millimeter-wide device, which offers up to six safety functions, comes equipped with a diagnostics display. The functions of the 3SK2 fail-safe outputs can be assigned independently of each other.

Typical applications for Sirius 3SK2 devices include emergency stop pushbuttons, protective doors with tumblers, or material feeder systems with light barrier sensor technology. Additional safety applications are simple to implement for specific requirements. The fail-safe outputs can be supplemented in a modular fashion as required – even without additional wiring. Just like devices in the Sirius 3SK1 series, Sirius 3SK2 units are simple to combine with conventional industrial controls, for example, devices from the Sirius 3RM1 motor starter range can be simply integrated using device connectors.


Sirius 3SK2 with up to six safety functions that can be parameterized using software

User-friendly software interface - create complex safety applications simply thanks to drag & drop functionality

Most compact software-parameterizable safety relay on the market

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