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. 249-6302
Fabrikantnummer440F-C4000P
820,00 €
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 447-5650
Fabrikantnummer440R-N23130
209,00 €
Each
Aantal stuks
230 V ac 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 3 Minotaur Automatic, Manual - Screw - -
RS-stocknr. 751-1024
Fabrikantnummer440R-D22R2
307,00 €
Each
Aantal stuks
24 V dc 2 1 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 3 E 2 Guardmaster Automatic, Manual, Monitored - Screw - Yes
RS-stocknr. 447-5717
Fabrikantnummer440R-N23135
176,00 €
Each
Aantal stuks
24 V ac/dc 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 3 Minotaur Monitored - Screw - -
RS-stocknr. 447-5565
Fabrikantnummer440R-N23115
131,00 €
Each
Aantal stuks
230 V ac 1 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual - - - -
RS-stocknr. 447-5773
Fabrikantnummer440R-M23086
282,00 €
Each
Aantal stuks
115 V ac 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual, Monitored - Screw - -
RS-stocknr. 447-5543
Fabrikantnummer440R-N23113
145,00 €
Each
Aantal stuks
115 V ac 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual - - - -
RS-stocknr. 447-5751
Fabrikantnummer440R-C23139
277,00 €
Each
Aantal stuks
24 V ac/dc 2 2 Light Beam/Curtain, Safety Mat/Edge - - - 3 Minotaur Automatic, Manual, Monitored - Screw - -
RS-stocknr. 330-0741
Fabrikantnummer440R-S35001
729,00 €
Each
Aantal stuks
24 V ac/dc - 1 Speed/Standstill Monitoring - - - 2 - - - - - -
RS-stocknr. 447-5789
Fabrikantnummer440R-M23088
251,00 €
Each
Aantal stuks
24 V ac/dc 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual, Monitored - Screw - -
RS-stocknr. 447-5537
Fabrikantnummer440R-N23112
145,00 €
Each
Aantal stuks
230 V ac 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual - - - -
RS-stocknr. 249-6201
Fabrikantnummer440F-C251P
474,00 €
Each
Aantal stuks
24 V dc, 115/230 V ac 2 1 Safety Mat/Edge - - - 2 Safedge Automatic, Manual - - - -
RS-stocknr. 447-5701
Fabrikantnummer440R-N23134
213,00 €
Each
Aantal stuks
115 V ac 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 3 Minotaur Monitored - Screw - -
RS-stocknr. 447-5672
Fabrikantnummer440R-N23131
200,00 €
Each
Aantal stuks
115 V ac 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 3 Minotaur Automatic, Manual - Screw - -
RS-stocknr. 447-5593
Fabrikantnummer440R-N23118
131,00 €
Each
Aantal stuks
230 V ac 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Monitored - - - -
RS-stocknr. 447-5571
Fabrikantnummer440R-N23116
145,00 €
Each
Aantal stuks
115 V ac 1 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual - - - -
RS-stocknr. 250-6459
Fabrikantnummer440R-F23027
556,00 €
Each
Aantal stuks
24 V ac/dc 2 1 Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual - - - -
RS-stocknr. 492-2364
Fabrikantnummer440F-C251D
415,00 €
Each
Aantal stuks
24 V dc, 110/230 V ac 2 1 Safety Mat/Edge - - - 2 Safedge Automatic, Manual - - - -
RS-stocknr. 151-2542
Fabrikantnummer440R-GL2S2T
263,00 €
Each
Aantal stuks
24 V dc 2 1 Time Delay - - - 1 GLT Automatic, Manual, Monitored 4 Screw IEC 60529, IEC 60664-1, IEC 61508, IEC 62061, IEC/CISPR 11, NEMA -
RS-stocknr. 890-2998
Fabrikantnummer440R-GL2S2P
308,00 €
Each
Aantal stuks
24 V dc 2 1 Safety Switch/Interlock - - - 1 - Automatic, Manual, Monitored - Screw EN ISO 12100, EN ISO 13849-1, IEC 60204-1, IEC 61508 -