Safety Relays

What are they?
A safety relay is a device that monitors for potential errors or faults in machinery or plants and works to prevent injury and reduce risk. When an error occurs, the safety relay initiates a response to bring the risk back to a safe, acceptable level. Safety relays protect both machinery and employees, preventing potential expensive maintenance and equipment replacement.
Example functions include initiating a controlled pause in machinery or equipment to safely stop movement. They can also be used as an emergency stop mechanism, switching off the power to particular machinery or plants.
Single function or multi-function?
Safety relays can be single function or multi-function. Single function relays monitor a specific type of activity while multi-function safety relays can monitor different functions. Multi-function safety relays can be used in place of several single function, individual units.
The benefits of using multi-function relays include simpler installation and less wiring. As fewer individual units are needed, using multi-function relays can also free up panel space. Multi-function safety relays give you greater flexibility to make changes within the design or panel.
Where would you find a safety relay?
Safety relays are often found in the following control devices:
- Two hand controls
- Movable guards
- Light curtains, light barriers and light grids
- Magnetic switches
- Safety mats and pressure sensitive mats
- Three position devices
- Non-contact safety sensors
- Safety switches
- Emergency stop buttons
Who uses them?
Anyone can integrate a safety relay within a circuit to create a safety circuit without any specific training.

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Description Prix Supply Voltage Number of Channels Auxiliary Contacts Function Safety Category ISO 13849-1 SIL IEC 61508 PL ISO 13849-1 Safety Contacts Range Reset Method Safety Category Terminal Type Standards Met Configurable
N° de stock RS 784-5780
Référence fabricant3SK1111-1AB30
MarqueSiemens
153,95 €
Each
Unité
24 V ac/dc 1 - - - - - 4 SIRIUS Automatic, Monitored - Screw - -
N° de stock RS 784-5790
Référence fabricant3SK1112-1BB40
MarqueSiemens
122,67 €
Each
Unité
24 V dc 1 - - - - - - SIRIUS Automatic, Monitored - Screw - -
N° de stock RS 498-937
Référence fabricant3RK1205-0BG00-0AA2
MarqueSiemens
142,20 €
Each
Unité
26.5 31.5 V dc - - - - - - 2 SIRIUS - - Cage Clamp - -
N° de stock RS 784-5881
Référence fabricant3SK1230-1AW20
MarqueSiemens
97,52 €
Each
Unité
110 240 V ac/dc - - - - - - - SIRIUS Automatic - Screw - -
N° de stock RS 784-5800
Référence fabricant3SK1121-1AB40
MarqueSiemens
195,65 €
Each
Unité
24 V dc 1 - - - - - 4 SIRIUS Automatic, Monitored - Screw - -
N° de stock RS 784-5835
Référence fabricant3SK1122-2CB41
MarqueSiemens
147,20 €
Each
Unité
24 V dc 1 - - - - - - SIRIUS Automatic, Monitored - Cage Clamp - -
N° de stock RS 784-5838
Référence fabricant3SK1122-1CB42
MarqueSiemens
147,20 €
Each
Unité
24 V dc 1 - - - - - - SIRIUS Automatic, Monitored - Screw - -
N° de stock RS 784-5844
Référence fabricant3SK1122-2CB42
MarqueSiemens
147,20 €
Each
Unité
24 V dc 1 - - - - - - SIRIUS Automatic, Monitored - Cage Clamp - -
Nouveau
N° de stock RS 197-3298
Référence fabricant3SK1911-3SB40
MarqueSiemens
495,71 €
Each
Unité
24 V - - Emergency Stop - - - - - - - - - -
N° de stock RS 784-5847
Référence fabricant3SK1122-2CB44
MarqueSiemens
147,20 €
Each
Unité
24 V dc 1 - - - - - - SIRIUS Automatic, Monitored - Cage Clamp - -
N° de stock RS 183-7198
Référence fabricant3SK2112-1AA10
MarqueSiemens
301,76 €
Each
Unité
24 V dc 2 - - - - - - SIRIUS - PLe, SIL 3 Screw - -
N° de stock RS 183-7201
Référence fabricant3SK2122-2AA10
MarqueSiemens
443,44 €
Each
Unité
24 V dc 4 - - - - - - SIRIUS - PLe, SIL 3 Push In - -
N° de stock RS 784-5784
Référence fabricant3SK1111-1AW20
MarqueSiemens
153,95 €
Each
Unité
110 240 V ac/dc 1 - - - - - 4 SIRIUS Automatic, Monitored - Screw - -
N° de stock RS 784-5796
Référence fabricant3SK1111-2AW20
MarqueSiemens
153,95 €
Each
Unité
110 240 V ac/dc 1 - - - - - 4 SIRIUS Automatic, Monitored - Cage Clamp - -
N° de stock RS 183-7202
Référence fabricant3SK2611-3AA00
MarqueSiemens
290,11 €
Each
Unité
- - - - - - - - SIRIUS - - Screw - -
N° de stock RS 763-6864
Référence fabricant3TK2828-1AJ20
MarqueSiemens
418,35 €
Each
Unité
115 V ac 1, 2 - Safety Switch/Interlock, Speed/Standstill Monitoring - - - 4 SIRIUS - - - - -
N° de stock RS 784-5825
Référence fabricant3SK1121-2CB44
MarqueSiemens
244,72 €
Each
Unité
24 V dc 1 - - - - - 4 SIRIUS Automatic, Monitored - Cage Clamp - -
Nouveau
N° de stock RS 197-3299
Référence fabricant3SK1912-3SB40
MarqueSiemens
1.324,66 €
Each
Unité
24 V - - Emergency Stop - - - - - - - - - -
N° de stock RS 784-5831
Référence fabricant3SK1122-1CB44
MarqueSiemens
147,20 €
Each
Unité
24 V dc 1 - - - - - - SIRIUS Automatic, Monitored - Screw - -
N° de stock RS 784-5793
Référence fabricant3SK1111-2AB30
MarqueSiemens
153,95 €
Each
Unité
24 V ac/dc 1 - - - - - 4 SIRIUS Automatic, Monitored - Cage Clamp - -