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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Beskrivning Pris 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-artikelnummer 893-7714
Tillv. art.nr2700553
VarumärkePhoenix Contact
1 184,50 kr
Each
Enheter
24 V dc 2 3 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual - Screw cUL, cULus, EAC, Functional Safety, UL -
RS-artikelnummer 447-4528
Tillv. art.nrXPSAR371144
VarumärkeSchneider Electric
5 081,08 kr
Each
Enheter
24 V dc, 240 V ac 1, 2 2 Light Beam/Curtain - - - 7 Preventa - - Screw - -
RS-artikelnummer 327-7613
Tillv. art.nrBH5928.92 DC24V 1-10S
VarumärkeDold
3 995,82 kr
Each
Enheter
24 V ac/dc 1, 2 - Emergency Stop - - - 3 Safemaster - - - - -
RS-artikelnummer 712-5279
Tillv. art.nr2986957
VarumärkePhoenix Contact
1 235,26 kr
Each
Enheter
24 V dc - - - - - - 3 - - 3 Cage Clamp - -
RS-artikelnummer 362-0174
Tillv. art.nr774350
VarumärkePilz
3 886,44 kr
Each
Enheter
24 V dc 2 1 Two-Hand Control - - - 2 PNOZ X Monitored - Screw - -
RS-artikelnummer 239-1049
Tillv. art.nr774303
VarumärkePilz
1 600,04 kr
Each
Enheter
24 V ac/dc 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 PNOZ X Manual - Screw - -
RS-artikelnummer 156-099
Tillv. art.nr750102
VarumärkePilz
1 567,56 kr
Each
Enheter
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 PNOZsigma Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 324-7268
Tillv. art.nr774056
VarumärkePilz
1 334,11 kr
Each
Enheter
230 V ac 1 - Safety Switch/Interlock - - - 2 PNOZ X - - Screw - -
RS-artikelnummer 239-1033
Tillv. art.nr774300
VarumärkePilz
1 587,88 kr
Each
Enheter
24 V ac/dc 1 1 Safety Switch/Interlock - - - 3 PNOZ X Automatic, Manual - Screw - -
RS-artikelnummer 447-5694
Tillv. art.nr440R-N23133
2 073,92 kr
Each
Enheter
230 V ac 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 3 Minotaur Monitored - Screw - -
RS-artikelnummer 836-2738
Tillv. art.nrG7SA5A1B24DC
VarumärkeOmron
395,60 kr
Each
Enheter
24 V dc - - - - - - - - - - - - -
RS-artikelnummer 245-1860
Tillv. art.nr774080
VarumärkePilz
3 850,62 kr
Each
Enheter
24 V ac/dc 2 1 Safety Switch/Interlock - - - 7 - Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 498-937
Tillv. art.nr3RK1205-0BG00-0AA2
VarumärkeSiemens
1 633,72 kr
Each
Enheter
26.5 → 31.5 V dc - - - - - - 2 SIRIUS - - Cage Clamp - -
RS-artikelnummer 812-8957
Tillv. art.nr118700 & ESR5-NO-21-24VAC-DC
VarumärkeEaton
2 026,64 kr
Each
Enheter
- 2 - Emergency Stop, Safety Switch/Interlock - - - 2 - Automatic, Manual - Screw - -
RS-artikelnummer 271-518
Tillv. art.nrUE403-A0930
VarumärkeSick
3 063,74 kr
Each
Enheter
- - - - - - - - - - - - - -
RS-artikelnummer 712-5263
Tillv. art.nr2986575
VarumärkePhoenix Contact
976,93 kr
Each
Enheter
24 V dc - - - - - - 3 - - - Screw - -
RS-artikelnummer 240-8670
Tillv. art.nrBN5983.53 DC24V
VarumärkeDold
3 989,21 kr
Each
Enheter
24 V dc 2 1 Emergency Stop - - - 3 Safemaster Monitored - Terminal Block - -
RS-artikelnummer 893-7720
Tillv. art.nr2904951
VarumärkePhoenix Contact
894,25 kr
Each
Enheter
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Manual 1 Screw cUL, cULus, EAC, Functional Safety, UL -
RS-artikelnummer 801-5943
Tillv. art.nr2981062
VarumärkePhoenix Contact
1 709,64 kr
Each
Enheter
24 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 4 - Automatic, Manual 3 Cage Clamp - -
RS-artikelnummer 609-7167
Tillv. art.nrXPSAFL5130
VarumärkeSchneider Electric
2 016,30 kr
Each
Enheter
24 V ac/dc 1, 2 - Light Beam/Curtain - - - 3 Preventa - - Screw - -