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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Omschrijving Prijs 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-stocknr. 122-2492
FabrikantnummerR1.188.2070.0
FabrikantWieland
360,56 €
Each
Aantal stuks
24 V dc 2 - Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 7 SafeRELAY Automatic, Manual, Monitored - Screw CCC, CPT, CULus, EN 50156-1, EN 62061, EN ISO 13849-1, FS, GL, GOST R, TUV -
RS-stocknr. 515-1787
FabrikantnummerR1.188.0530.1
FabrikantWieland
183,95 €
Each
Aantal stuks
24 V ac/dc 2 1 Two-Hand Control - - - 2 SafeRELAY Monitored - Screw - -
RS-stocknr. 122-2493
FabrikantnummerR1.188.1840.0
FabrikantWieland
218,09 €
Each
Aantal stuks
230 V ac 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 SafeRELAY Manual - Screw CCC, CPT, CULus, EN 50156-1, EN 61511, EN 62061, EN 81-1, EN ISO 13849-1, FS, GL, GOST R, TUV -
RS-stocknr. 515-1759
FabrikantnummerR1.188.0500.1
FabrikantWieland
146,15 €
Each
Aantal stuks
24 V ac/dc 2 1 Safety Switch/Interlock - - - 3 SafeRELAY Monitored - Screw - -
RS-stocknr. 122-2500
FabrikantnummerR1.188.0720.2
FabrikantWieland
184,32 €
Each
Aantal stuks
24 V ac/dc 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 2 SafeRELAY Monitored - Screw CCC, CPT, CULus, DGUV, EN 62061, EN ISO 13849-1, GOST R -
RS-stocknr. 122-2499
FabrikantnummerR1.188.0620.0
FabrikantWieland
298,56 €
Each
Aantal stuks
24 V dc 2 - Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 SafeRELAY Monitored - Screw CCC, CPT, CULus, EN 50156-1, EN 62061, EN ISO 13849-1, FS, GL, GOST R, TUV -
RS-stocknr. 321-9049
FabrikantnummerSNO 4062K-A-00C
FabrikantWieland
147,80 €
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 2 SafeRELAY - - Screw - -
RS-stocknr. 122-2491
FabrikantnummerR1.188.1830.0
FabrikantWieland
215,40 €
Each
Aantal stuks
115 → 120 V ac 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 SafeRELAY Manual - Screw CCC, CPT, CULus, EN 50156-1, EN 61511, EN 62061, EN 81-1, EN ISO 13849-1, FS, GL, GOST R, TUV -
RS-stocknr. 780-5073
FabrikantnummerR1.188.3580.0 - SNO4083KM-A
FabrikantWieland
231,31 €
Each
Aantal stuks
24 V dc 2 - - - - - 3 SafeRELAY Manual - Screw - -
RS-stocknr. 780-5098
FabrikantnummerR1.188.3700.0 - SNZ1022K-A
FabrikantWieland
125,85 €
Each
Aantal stuks
24 V dc 2 - - - - - 2 SafeRELAY - - Screw - -
RS-stocknr. 122-2497
FabrikantnummerR1.188.1810.0
FabrikantWieland
200,98 €
Each
Aantal stuks
24 V ac/dc 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 SafeRELAY Manual - Screw CCC, CPT, CULus, EN 50156-1, EN 61511, EN 62061, EN 81-1, EN ISO 13849-1, FS, GL, GOST R, TUV -
RS-stocknr. 122-2495
FabrikantnummerR1.188.1460.0
FabrikantWieland
224,98 €
Each
Aantal stuks
230 V ac 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 SafeRELAY Manual, Monitored - Screw CCC, CPT, CULus, EN 50156-1, EN 61511, EN 62061, EN 81-1, EN ISO 13849-1, FS, GL, GOST R, TUV -
RS-stocknr. 122-2498
FabrikantnummerR1.188.1440.0
FabrikantWieland
213,84 €
Each
Aantal stuks
24 V ac/dc 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 SafeRELAY Manual, Monitored - Screw CCC, CULus, EN 50156-1, EN 61511, EN 62061, EN 81-1, EN ISO 13849-1, GL, GOST R, TUV -
RS-stocknr. 780-5091
FabrikantnummerR1.188.3710.0 - SNZ1022K-A
FabrikantWieland
148,36 €
Each
Aantal stuks
115 → 230 V ac 2 - - - - - 2 SafeRELAY - - Screw - -
RS-stocknr. 122-2496
FabrikantnummerR1.188.1450.0
FabrikantWieland
219,43 €
Each
Aantal stuks
115 → 120 V ac 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 SafeRELAY Manual, Monitored - Screw CCC, CPT, CULus, EN 50156-1, EN 61511, EN 62061, EN 81-1, EN ISO 13849-1, FS, GL, GOST R, TUV -
RS-stocknr. 780-5082
FabrikantnummerR1.188.3590.0 - SNO4083KM-A
FabrikantWieland
237,75 €
Each
Aantal stuks
115 → 230 V ac 2 - - - - - 3 SafeRELAY Manual - Screw - -
RS-stocknr. 780-5095
FabrikantnummerR1.188.3740.0 - SNO1012K-A
FabrikantWieland
131,67 €
Each
Aantal stuks
24 V ac/dc 1 - - - - - 2 SafeRELAY Manual - Screw - -
RS-stocknr. 122-2494
FabrikantnummerR1.188.2040.0
FabrikantWieland
372,55 €
Each
Aantal stuks
24 V dc 2 - Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 7 SafeRELAY Automatic, Manual, Monitored - Screw CCC, CPT, CULus, EN 50156-1, EN 62061, EN ISO 13849-1, FS, GL, GOST R, TUV -