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 Safety Contacts Function Safety Category ISO 13849-1 Reset Method SIL IEC 61508 PL ISO 13849-1 Range Safety Category Terminal Type Standards Met Configurable
RS-artikelnummer 733-2391
Tillv. art.nr2TLA010029R0000 RT9 24DC
VarumärkeABB
1 603,27 kr
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24 V dc 1, 2 - 2 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - - - - Terminal Block - -
RS-artikelnummer 245-1848
Tillv. art.nr774310
VarumärkePilz
2 148,53 kr
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24 V ac/dc 2 1 3 Safety Switch/Interlock - Automatic, Monitored - - PNOZ X - Screw - -
RS-artikelnummer 733-2436
Tillv. art.nr2TLA020052R1000 Vital 1
VarumärkeABB
2 669,63 kr
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24 V dc - - 2 Light Beam/Curtain, Safety Switch/Interlock - Automatic, Manual - - - - Screw - -
RS-artikelnummer 291-3273
Tillv. art.nrOA 5669.12/983/61 DC24V
VarumärkeDold
135,36 kr
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- - - - - - - - - - - - - -
RS-artikelnummer 156-106
Tillv. art.nr750104
VarumärkePilz
2 112,89 kr
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24 V dc 2 1 3 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - Automatic, Manual, Monitored - - PNOZsigma - Screw - -
RS-artikelnummer 890-3389
Tillv. art.nrG9SE-201-DC24
VarumärkeOmron
1 253,00 kr
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24 V dc 2 1 2 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - 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-artikelnummer 240-8743
Tillv. art.nrBD5987.02/001 AC50/60Hz 230V
VarumärkeDold
3 088,63 kr
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230 V ac 2 - 2 Emergency Stop - - - - Safemaster - - - -
RS-artikelnummer 155-939
Tillv. art.nr750101
VarumärkePilz
1 328,57 kr
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24 V dc 1 - 2 Emergency Stop, Safety Switch/Interlock - Automatic, Manual - - PNOZsigma PLc Category 1, SIL CL2 Screw - -
RS-artikelnummer 360-4352
Tillv. art.nrXPSAF5130P
VarumärkeSchneider Electric
2 191,05 kr
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24 V ac/dc 1, 2 - 3 Safety Switch/Interlock - - - - Preventa - Screw - -
RS-artikelnummer 245-1854
Tillv. art.nr774318
VarumärkePilz
2 148,53 kr
Each
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24 V dc, 230 V ac 2 1 3 Emergency Stop - Automatic, Monitored - - PNOZ X - Screw - -
RS-artikelnummer 890-3382
Tillv. art.nrG9SE-401-DC24
VarumärkeOmron
1 464,00 kr
Each
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24 V dc 2 1 4 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - 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-artikelnummer 893-7698
Tillv. art.nr2700540
VarumärkePhoenix Contact
1 184,50 kr
Each
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24 V dc 2 3 3 Emergency Stop, Safety Switch/Interlock - Automatic, Manual - - PSRmini 3 Screw cUL, cULus, EAC, Functional Safety, UL -
RS-artikelnummer 156-083
Tillv. art.nr750103
VarumärkePilz
1 628,40 kr
Each
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24 V dc 2 - 2 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - Automatic, Manual, Monitored - - PNOZsigma - Screw - -
RS-artikelnummer 155-850
Tillv. art.nr750126
VarumärkePilz
2 112,89 kr
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24 V dc 2 1 3 Two-Hand Control - Monitored - - PNOZsigma PLc Category 1, SIL CL1 Screw - -
RS-artikelnummer 422-5152
Tillv. art.nrXPSAK311144
VarumärkeSchneider Electric
2 795,94 kr
Each
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24 V ac/dc 2 1 3 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - Automatic, Manual - - Preventa - Screw - -
RS-artikelnummer 733-5123
Tillv. art.nr50.12.9.125.5000
VarumärkeFinder
180,11 kr
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- - - - - - - - - - - - - -
RS-artikelnummer 549-530
Tillv. art.nrG9SB-2002-A AC/DC24
VarumärkeOmron
1 943,00 kr
Each
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24 V ac/dc 2 - 2 Emergency Stop - Automatic - - - - - - -
RS-artikelnummer 515-1759
Tillv. art.nrR1.188.0500.1
VarumärkeWieland
1 558,54 kr
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24 V ac/dc 2 1 3 Safety Switch/Interlock - Monitored - - safeRELAY - Screw - -
RS-artikelnummer 447-5644
Tillv. art.nr440R-N23123
1 320,76 kr
Each
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24 V ac/dc 1 - 2 Light Beam/Curtain, Safety Switch/Interlock - Monitored - - Minotaur - - - -
RS-artikelnummer 893-7701
Tillv. art.nr2700569
VarumärkePhoenix Contact
1 184,50 kr
Each
Enheter
24 V dc 2 3 3 Emergency Stop, Safety Switch/Interlock - Automatic, Manual - - PSRmini 4 Screw cUL, cULus, EAC, Functional Safety, UL -