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 176-0027
Référence fabricant2TLA010053R0400
MarqueABB Jokab
309,00 €
Each
Unité
24 V dc 3 4 Safety Switch - - - 4 Sentry Multi-Reset 4 Screw - -
N° de stock RS 784-5793
Référence fabricant3SK1111-2AB30
MarqueSiemens
153,95 €
Each
Unité
24 V ac/dc 1 - - - - - 4 SIRIUS Automatic, Monitored - Cage Clamp - -
N° de stock RS 125-1103
Référence fabricantXPSTSA5142P
169,11 €
Each
Unité
24 V ac/dc - - Safety Switch/Interlock - - - - Preventa Manual PLd Category 3, SIL CL2 Screw CSA, EN/IEC 60204-1, EN/IEC 60947-5-1, TUV, UL -
N° de stock RS 751-1033
Référence fabricant440R-S12R2
172,00 €
Each
Unité
24 V dc 2 1 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 3 E 2 - Automatic, Manual, Monitored - Screw - Yes
N° de stock RS 666-7044
Référence fabricant2963802
136,81 €
Each
Unité
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 4 - - 1 Screw - -
N° de stock RS 240-8686
Référence fabricantBN5983.53 AC50/60Hz 230V
MarqueDold
392,47 €
Each
Unité
230 V ac 2 1 Emergency Stop - - - 3 Safemaster Monitored - Terminal Block - -
Nouveau
N° de stock RS 201-1475
Référence fabricantXPSUEP34AP
169,50 €
Each
Unité
24 V ac/dc 1 4 Emergency Stop - - - 5 Preventa - PLe Category 4, SIL CL3 Screw FS, CE, RoHS, REACH, Green Premium, cULus, RCM, CCC, S-Mark, K-Mark, EAC -
N° de stock RS 857-7536
Référence fabricantNES13DB24SA
291,04 €
Each
Unité
24 V ac/dc - - - - - - - - - - - - -
N° de stock RS 176-0032
Référence fabricant2TLA010050R0100
MarqueABB Jokab
244,00 €
Each
Unité
265 V ac, 375 V dc 2 3NO/NC Safety Switch - - - 4 Sentry Multi-Reset 4 Screw - -
N° de stock RS 447-5616
Référence fabricant440R-N23120
125,00 €
Each
Unité
24 V ac/dc 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Monitored - - - -
N° de stock RS 801-5943
Référence fabricant2981062
166,33 €
Each
Unité
24 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 4 - Automatic, Manual 3 Cage Clamp - -
N° de stock RS 190-8414
Référence fabricant2702902
289,20 €
Each
Unité
24 V dc 2 - - - - - 2 - Automatic, Manual, Monitored PLe Category 4, SILCL 3 Plug-In - -
N° de stock RS 176-0031
Référence fabricant2TLA010051R0000
MarqueABB Jokab
213,00 €
Each
Unité
24 V dc - 3NO/NC Safety Switch - - - 4 Sentry Multi-Reset 4 Screw - -
N° de stock RS 190-8413
Référence fabricant2702524
152,90 €
Each
Unité
24 V dc 2 - - - - - 1 - - SIL 3 Screw - -
N° de stock RS 176-0030
Référence fabricant2TLA010051R0100
MarqueABB Jokab
274,00 €
Each
Unité
265 V ac, 375 V dc - 3NO/NC Safety Switch - - - 4 Sentry Multi-Reset 4 Screw - -
N° de stock RS 2509665394
Référence fabricantES-UA-5A
282,11 €
Each
Unité
- - - - - - - - - - - - - -
N° de stock RS 2509667665
Référence fabricantGM-FA-10J
305,72 €
Each
Unité
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