Siemens limit switches and safety switches

SIRIUS 3SE5/ 3SE6 limit and safety switches provide accurate detection of moving parts around machines and plants in almost any application. Whether they are used to detect positions, restrict the movement of specific machine parts, monitor the position of movable safety systems or are included in safety functions according to EN ISO 14119 - our mechanical and non-contact switches are widely applicable and functional even under the harshest conditions.

For standard and failsafe application

SIRIUS 3SE5 limit switches can be used everywhere in the same design. This applies wherever requirements apply from machine safety for personal safety and for failsafe applications. They guarantee reliable detection up to SIL 3 (EN 62061) / PL e (EN ISO 13849-1). On versions with ASIsafe functionality, the slave is fully integrated into the housing. This saves you costs and space in the machine or control cabinet as no additional components are required.

Reliable detection

SIRIUS limit, safety, pull-cord, pedal switches detect movements with precision in the system or for mounting on movable protective covers (covers, doors, etc.) in virtually any application.

SIRIUS 3SE5 mechanical limit switches have a standardised design with modular construction and universally mountable control heads. This makes putting together the right switch easy for you. The choice of limit switch versions is huge and leaves nothing to be desired. Installation, wiring and exchange can be done extremely quickly. All versions are suitable for both standard and safety applications.

Manipulation protection and locking function

For increased manipulation protection, the SIRIUS 3SE5 series offers a safety switch with separate 3D-coded actuation key. This special actuation key allows 1 switch to be used up to SIL 2 (EN 62061) / PL d (EN ISO 13849-1). Control keys are available separately in various shapes and materials. From the non-contact 3SE6 safety switches, we offer reliable RFID coded versions for increased protection against interference and manipulation. This already gives them the highest safety level, SIL 3 /PLe.

We also have versions of fence switches with an interlock function available in both mechanical (3SE5) and non-contact (3SE6) variants.

Signal processing

After detection using the SIRIUS 3SE5/ 3SE6 limit or safety switch, the safety system processes the signal, this can be done, for example, with SIRIUS 3SK safety relays or with a SIMATIC S7 failsafe controller.

Click here to learn more about SIRIUS 3SE safety and limit switches.

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