SIRIUS 3SK Safety Relays - Machine Safety

Why 3SK safety relays?

SIRIUS 3SK safety relays are used to implement safety functions. Their modular design simplifies the planning, commissioning and expansion of plants so safety solutions can be implemented quickly. Achieve outstanding simplicity, flexibility and cost-effectiveness without the need for programming. Safety relays can be used whether the application involves the fail-safe monitoring of a mechanical or an electronic sensor. With SIRIUS 3SK you are choosing a reliable portfolio. Implement the safety functions of common safety applications easily with the 3SK1 safety relays. 3SK2 safety relays can be parameterized by software and are available for applications with more complex safety requirements. They can be connected to higher-level control systems via PROFINET. The portfolio includes:

3SK1 safety relays
3SK2 safety relays
Expansion units
Software and simulator for 3SK2
3SK2 communication
3SK2 starter kits

Key benefits

Reduce costs

Determine the precise cause of errors and fix problems related to safety faster, avoiding unnecessary downtime and keeping your plant productive.

Scale flexibly

Take advantage of modular designs to scale to your plant’s needs. Plan and expand based on your resources with options like input and output expansions.

Move quickly

Quickly implement safety solutions like a simple emergency stop to protective door monitoring, as well as the combination of several safety functions up to SIL 3 and PL e, without programming.

Featured products

SIRIUS 3SK1 safety relays

With simple and economical SIRIUS 3SK1 safety relays, safety functions can be simply parameterized with DIP switches. Operation of a sensor is always followed by fail-safe disabling of all outputs of these safety relays.

SIRIUS 3SK2 safety relays

While the 3SK1 safety relays deliver simultaneous fail-safe disabling of all outputs, the fail-safe outputs on the 3SK2 safety relays can be disabled individually. Enjoy robust functionality with a small footprint.

3SK2 communication via PROFINET or PROFIBUS

Integrate the 3SK2 safety relays on the control level for exchanging process data or diagnostics with the interface modules for PROFINET and PROFIBUS. Connect to the Safety ES via the communication network with the safety relays.