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. 836-2738
FabrikantnummerG7SA5A1B24DC
FabrikantOmron
26,56 €
Each
Aantal stuks
24 V dc - - - - - - - - - - - - -
RS-stocknr. 757-9308
FabrikantnummerG9SB-3012-C AC/DC24
FabrikantOmron
157,70 €
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 3 - - - - - -
RS-stocknr. 757-9317
FabrikantnummerG9SA-301 AC100-240
FabrikantOmron
287,30 €
Each
Aantal stuks
100 → 240 V ac 2 1 Emergency Stop - - - 1 - - - - - -
RS-stocknr. 757-9310
FabrikantnummerG9SA-321-T075 AC/DC24
FabrikantOmron
348,40 €
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 3 - - - - - -
RS-stocknr. 890-3386
FabrikantnummerG9SE-221-T05-DC24
FabrikantOmron
178,50 €
Each
Aantal stuks
24 V dc 2 1 Emergency Stop - - - 2 - Automatic, Manual - Screw CAN C22.2 No.14, CSA C22.2 No.14, EN 62061 SIL3, EN 81-1, EN 81-2, EN ISO 13849-1: 2008 PL e Safety Category 4, EN/IEC 60947-5-1, GB 14048.5, IEC 62061 SIL 3, UL508 -
RS-stocknr. 890-3389
FabrikantnummerG9SE-201-DC24
FabrikantOmron
113,70 €
Each
Aantal stuks
24 V dc 2 1 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 2 - Automatic, Manual - Screw CAN C22.2 No.14, CSA C22.2 No.14, EN 62061 SIL3, EN 81-1, EN 81-2, EN ISO 13849-1: 2008 PL e Safety Category 4, EN/IEC 60947-5-1, GB 14048.5, IEC 62061 SIL 3, UL508 -
RS-stocknr. 860-3773
FabrikantnummerG9SR-BC201-RC
FabrikantOmron
150,20 €
Each
Aantal stuks
19.2 → 28.8 V dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - - - - - Cage Clamp - -
RS-stocknr. 860-3770
FabrikantnummerG9SR-AD201-RC
FabrikantOmron
164,30 €
Each
Aantal stuks
19.2 → 28.8 V dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 2 - - - Cage Clamp - -
RS-stocknr. 549-570
FabrikantnummerG9SB200DACDC24
FabrikantOmron
149,10 €
Each
Aantal stuks
24 V ac/dc 2 - Emergency Stop - - - 2 - Manual - - - -
RS-stocknr. 549-489
FabrikantnummerG9SB301BACDC24
FabrikantOmron
166,20 €
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 3 - Automatic - - - -
RS-stocknr. 549-536
FabrikantnummerG9SA-501 24AC/DC
FabrikantOmron
318,40 €
Each
Aantal stuks
24 V ac/dc 1, 2 1 Emergency Stop - - - 5 - - - - - -
RS-stocknr. 549-530
FabrikantnummerG9SB-2002-A AC/DC24
FabrikantOmron
141,60 €
Each
Aantal stuks
24 V ac/dc 2 - Emergency Stop - - - 2 - Automatic - - - -
RS-stocknr. 757-9304
FabrikantnummerG9SB-3012-A AC/DC24
FabrikantOmron
157,70 €
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 3 - - - - - -
RS-stocknr. 549-603
FabrikantnummerG9SB301DACDC24
FabrikantOmron
166,20 €
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 3 - Manual - - - -
RS-stocknr. 757-9291
FabrikantnummerG9SB-2002-C AC/DC24
FabrikantOmron
141,60 €
Each
Aantal stuks
24 V ac/dc 2 - Emergency Stop - - - 2 - - - - - -
RS-stocknr. 549-609
FabrikantnummerG9SA-301 24AC/DC
FabrikantOmron
175,80 €
Each
Aantal stuks
24 V ac/dc 1, 2 1 Emergency Stop - - - 3 - - - - - -
RS-stocknr. 757-9314
FabrikantnummerG9SA-321-T30 24AC/DC
FabrikantOmron
348,40 €
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 3 - - - - - -
RS-stocknr. 757-9323
FabrikantnummerG9SA-501 AC100-240
FabrikantOmron
347,20 €
Each
Aantal stuks
100 → 240 V ac 2 1 Emergency Stop - - - 5 - - - - - -
RS-stocknr. 549-473
FabrikantnummerG9SB-200-B AC/DC24
FabrikantOmron
149,10 €
Each
Aantal stuks
24 V ac/dc 2 - Emergency Stop - - - 2 - Automatic - - - -
RS-stocknr. 757-9301
FabrikantnummerG9SB-3010 DC24
FabrikantOmron
166,20 €
Each
Aantal stuks
24 V dc 2 1 Emergency Stop - - - 3 - - - - - -