3SK1 safety relays

SIRIUS 3SK1 safety relays are used mainly in autonomous safety applications which are not connected to a safety-oriented bus system. Their function here is to evaluate the sensors and the safety-oriented shutdown of hazards. Also they check and monitor the sensors, actuators and safety-oriented functions of the safety relay.

3SK2 safety relays

SIRIUS 3SK2 safety relays are used mainly in autonomous and more complex safety applications, in which the functional scope of the 3SK1 devices is no longer adequate, e.g. when implementing independent trip functions. Their function here is to evaluate the sensors and the safety-related shutdown of hazards. They also check and monitor the sensors, actuators and safety-oriented functions of the safety relay.