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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Description Prix 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
N° de stock RS 362-0152
Référence fabricant774709
MarquePilz
363,60 €
Each
Unité
24 V dc 1, 2 4 Safety Switch/Interlock - - - 6 PNOZ X - - Screw - -
N° de stock RS 489-6394
Référence fabricant777949
MarquePilz
430,00 €
Each
Unité
24 → 240 V ac/dc 1, 2 1 Speed/Standstill Monitoring - - - 2 PNOZ X - - Screw - -
N° de stock RS 890-3389
Référence fabricantG9SE-201-DC24
MarqueOmron
102,61 €
Each
Unité
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 -
N° de stock RS 198-582
Référence fabricantXPSAR351144P
437,64 €
Each
Unité
115 V ac 2 2 Emergency Stop, Light Beam/Curtain - - - 7 Preventa Automatic, Manual - Screw - -
N° de stock RS 893-7701
Référence fabricant2700569
116,71 €
Each
Unité
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual 4 Screw cUL, cULus, EAC, Functional Safety, UL -
N° de stock RS 447-5565
Référence fabricant440R-N23115
131,00 €
Each
Unité
230 V ac 1 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual - - - -
N° de stock RS 609-7167
Référence fabricantXPSAFL5130
174,69 €
Each
Unité
24 V ac/dc 1, 2 - Light Beam/Curtain - - - 3 Preventa - - Screw - -
N° de stock RS 321-9049
Référence fabricantSNO 4062K-A-00C
MarqueWieland
142,76 €
Each
Unité
24 V ac/dc 2 1 Emergency Stop - - - 2 safeRELAY - - Screw - -
N° de stock RS 203-8063
Référence fabricant774030
MarquePilz
159,50 €
Each
Unité
24 V dc 1 2 Speed/Standstill Monitoring - - - 1 PNOZ X - - Screw - -
N° de stock RS 893-7694
Référence fabricant2700499
113,53 €
Each
Unité
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock - - - 2 PSRmini Automatic, Manual 3 Cage Clamp cUL, cULus, EAC, Functional Safety, UL -
N° de stock RS 893-7727
Référence fabricant2904953
91,31 €
Each
Unité
24 V dc 2 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Manual 3 Screw cUL, cULus, EAC, Functional Safety, UL -
N° de stock RS 812-8967
Référence fabricant118701 & ESR5-NO-41-24VAC-DC
MarqueEaton
139,96 €
Each
Unité
- 1 - Emergency Stop, Safety Switch/Interlock - - - 4 - Automatic, Manual - Screw - -
N° de stock RS 917-6673
Référence fabricant2TLA010033R3000
MarqueABB
219,00 €
Each
Unité
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 -
N° de stock RS 464-502
Référence fabricantXPSATE3410P
380,00 €
Each
Unité
115 V ac 2 4 Emergency Stop, Safety Mat/Edge, Safety Switch/Interlock - - - 2 Preventa Automatic, Manual - Screw - -
N° de stock RS 814-6924
Référence fabricantXPSAC3421P
165,00 €
Each
Unité
115 V ac 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 Preventa Monitored - Screw - -
N° de stock RS 666-7117
Référence fabricant2963776
145,76 €
Each
Unité
24 V ac/dc 2 1 Emergency Stop, Safety Switch/Interlock - - - 3 - - 3 Screw - -
N° de stock RS 731-8957
Référence fabricantXPSBCE3110C
299,88 €
Each
Unité
24 V ac/dc - 1 Two-Hand Control - - - 2 Preventa - - Cage Clamp - -
N° de stock RS 156-099
Référence fabricant750102
MarquePilz
144,30 €
Each
Unité
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 PNOZsigma Automatic, Manual, Monitored - Screw - -
N° de stock RS 549-570
Référence fabricantG9SB200DACDC24
MarqueOmron
133,23 €
Each
Unité
24 V ac/dc 2 - Emergency Stop - - - 2 - Manual - - - -
N° de stock RS 156-112
Référence fabricant750134
MarquePilz
205,60 €
Each
Unité
48 → 240 V ac/dc 2 1 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 PNOZsigma Automatic, Manual, Monitored - Screw - -