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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Omschrijving Prijs 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
RS-stocknr. 447-4477
FabrikantnummerXPSAC5121
164,10 €
Each
Aantal stuks
24 V ac/dc - 1 Emergency Stop - - - 3 Preventa - - Screw - -
RS-stocknr. 360-4346
FabrikantnummerXPSAF5130
195,10 €
Each
Aantal stuks
24 V ac/dc 1, 2 - Safety Switch/Interlock - - - 3 Preventa - - Screw - -
RS-stocknr. 360-4352
FabrikantnummerXPSAF5130P
207,50 €
Each
Aantal stuks
24 V ac/dc 1, 2 - Safety Switch/Interlock - - - 3 Preventa - - Screw - -
RS-stocknr. 814-6952
FabrikantnummerXPSAC3721P
172,40 €
Each
Aantal stuks
230 V ac 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 Preventa Monitored - Screw - -
RS-stocknr. 814-6921
FabrikantnummerXPSAFL5130P
203,40 €
Each
Aantal stuks
24 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 Preventa Monitored - Screw - -
RS-stocknr. 464-495
FabrikantnummerXPSATE3710P
329,26 €
Each
Aantal stuks
230 V ac 2 4 Emergency Stop, Safety Mat/Edge, Safety Switch/Interlock - - - 2 Preventa Automatic, Manual - Screw - -
RS-stocknr. 464-491
FabrikantnummerXPSATE5110P
329,26 €
Each
Aantal stuks
24 V dc 2 4 Emergency Stop, Safety Mat/Edge, Safety Switch/Interlock - - - 2 Preventa Automatic, Manual - Screw - -
RS-stocknr. 814-6927
FabrikantnummerXPSAC5121P
172,40 €
Each
Aantal stuks
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 Preventa Monitored - Screw - -
RS-stocknr. 422-5152
FabrikantnummerXPSAK311144
233,30 €
Each
Aantal stuks
24 V ac/dc 2 1 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 3 Preventa Automatic, Manual - Screw - -
RS-stocknr. 481-8237
FabrikantnummerXPSAK351144
233,30 €
Each
Aantal stuks
120 V ac 2 1 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 3 Preventa Automatic, Manual - Screw - -
RS-stocknr. 812-3899
FabrikantnummerXPSBAE5120P
132,10 €
Each
Aantal stuks
24 V ac/dc - 1 Two-Hand Control - - - 2 Preventa - - Screw - -
RS-stocknr. 422-5180
FabrikantnummerXPSAK371144
233,30 €
Each
Aantal stuks
230 V ac 2 1 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 3 Preventa Automatic, Manual - Screw - -
RS-stocknr. 447-4528
FabrikantnummerXPSAR371144
406,10 €
Each
Aantal stuks
24 V dc, 240 V ac 1, 2 2 Light Beam/Curtain - - - 7 Preventa - - Screw - -
RS-stocknr. 731-8960
FabrikantnummerXPSBCE3410C
333,20 €
Each
Aantal stuks
115 V ac - 1 Two-Hand Control - - - 2 Preventa - - Cage Clamp - -
RS-stocknr. 609-7151
FabrikantnummerXPSAC1321
164,10 €
Each
Aantal stuks
48 V ac - 1 Emergency Stop - - - 3 Preventa - - Screw - -
RS-stocknr. 447-4483
FabrikantnummerXPSAC3421
164,10 €
Each
Aantal stuks
115 V ac - 1 Emergency Stop - - - 3 Preventa - - Screw - -
RS-stocknr. 422-5168
FabrikantnummerXPSAK361144
233,30 €
Each
Aantal stuks
110 V ac 2 1 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 3 Preventa Automatic, Manual - Screw - -
RS-stocknr. 447-4506
FabrikantnummerXPSAR311144
406,10 €
Each
Aantal stuks
24 V dc 1, 2 2 Light Beam/Curtain - - - 7 Preventa - - - - -
RS-stocknr. 447-4540
FabrikantnummerXPSDME1132
324,20 €
Each
Aantal stuks
24 V dc 1, 2 2 Safety Switch/Interlock - - - 2 Preventa - - Screw - -
RS-stocknr. 447-4499
FabrikantnummerXPSAC3721
164,10 €
Each
Aantal stuks
230 V ac - 1 Emergency Stop - - - 3 Preventa - - Screw - -