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 918-6645
Tillv. art.nr777313
VarumärkePilz
2 610,08 kr
Each
Enheter
24 → 240 V ac/dc 2 1 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 PNOZ X Automatic, Manual - Screw - -
RS-artikelnummer 917-6676
Tillv. art.nr2TLA010005R0100
VarumärkeABB
1 809,09 kr
Each
Enheter
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 - Automatic - Screw - -
RS-artikelnummer 515-1759
Tillv. art.nrR1.188.0500.1
VarumärkeWieland
1 442,38 kr
Each
Enheter
24 V ac/dc 2 1 Safety Switch/Interlock - - - 3 safeRELAY Monitored - Screw - -
RS-artikelnummer 447-5644
Tillv. art.nr440R-N23123
1 200,69 kr
Each
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24 V ac/dc 1 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Monitored - - - -
RS-artikelnummer 666-7044
Tillv. art.nr2963802
VarumärkePhoenix Contact
1 437,22 kr
Each
Enheter
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 4 - - 1 Screw - -
RS-artikelnummer 751-1024
Tillv. art.nr440R-D22R2
2 927,31 kr
Each
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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-artikelnummer 245-1955
Tillv. art.nr774150
VarumärkePilz
2 517,44 kr
Each
Enheter
24 V dc 2 1 Expansion Module - - - 8 PNOZ X - - Screw - -
RS-artikelnummer 741-8650
Tillv. art.nrSRB 301MC-24V
VarumärkeSchmersal
2 258,96 kr
Each
Enheter
24 V ac/dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - - PROTECT - - Screw - -
RS-artikelnummer 239-1055
Tillv. art.nr774306
VarumärkePilz
1 600,04 kr
Each
Enheter
24 V ac/dc 2 - Safety Switch/Interlock - - - 2 PNOZ X Automatic, Manual - Screw - -
RS-artikelnummer 656-6089
Tillv. art.nrLG5924.02/61 AC50/60Hz 230V
VarumärkeDold
1 602,74 kr
Each
Enheter
230 V ac 1 - Emergency Stop - - - 2 Safemaster - - Terminal Block - -
RS-artikelnummer 814-6915
Tillv. art.nrXPSAV11113P
VarumärkeSchneider Electric
5 390,24 kr
Each
Enheter
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock - - - 6 Preventa Automatic, Monitored - Screw - -
RS-artikelnummer 155-822
Tillv. art.nr750105
VarumärkePilz
3 078,63 kr
Each
Enheter
24 V dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 2 PNOZsigma Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 860-3770
Tillv. art.nrG9SR-AD201-RC
VarumärkeOmron
1 599,00 kr
Each
Enheter
24 V dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 2 - - - Cage Clamp - -
RS-artikelnummer 155-844
Tillv. art.nr750106
VarumärkePilz
3 560,96 kr
Each
Enheter
24 V dc 2 1 Two-Hand Control - - - 3 PNOZsigma - - Screw - -
RS-artikelnummer 917-6673
Tillv. art.nr2TLA010033R3000
VarumärkeABB
1 501,62 kr
Each
Enheter
24 V dc 2 - Emergency Stop, Safety Switch/Interlock - - - 4 - Automatic - Screw CCC, cCSAus, CE, EN 60204-1:2006 + A1:2009, EN 62061:2005, EN 954-1:1996, EN ISO 12100-1:2003, EN ISO 12100-2:2003, EN ISO 13849-1:2008, IEC 60529, IEC 60947-5-1:2009, TUV -
RS-artikelnummer 860-3773
Tillv. art.nrG9SR-BC201-RC
VarumärkeOmron
1 477,00 kr
Each
Enheter
24 V dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - - - - - Cage Clamp - -
RS-artikelnummer 893-7745
Tillv. art.nr2904958
VarumärkePhoenix Contact
926,69 kr
Each
Enheter
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock - - - 2 PSRmini Automatic 3 Screw cUL, cULus, EAC, Functional Safety, UL -
RS-artikelnummer 362-0168
Tillv. art.nr774585
VarumärkePilz
1 360,72 kr
Each
Enheter
24 V dc 1 - Expansion Module - - - 4 PNOZ X Automatic - Screw - -
RS-artikelnummer 893-7691
Tillv. art.nr2700498
VarumärkePhoenix Contact
1 152,16 kr
Each
Enheter
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock - - - 2 PSRmini Automatic, Manual 3 Screw cUL, cULus, EAC, Functional Safety, UL -
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 -