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. 757-9310
FabrikantnummerG9SA-321-T075 AC/DC24
FabrikantOmron
€ 311,26
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop - - - 3 - - - - - -
RS-stocknr. 447-4461
FabrikantnummerXPSMP11123
€ 380,97
Each
Aantal stuks
24 V dc 1 3 Safety Mat/Edge, Safety Switch/Interlock - - - 6 Preventa Automatic, Monitored - - - -
RS-stocknr. 447-4506
FabrikantnummerXPSAR311144
€ 365,49
Each
Aantal stuks
24 V dc 1, 2 2 Light Beam/Curtain - - - 7 Preventa - - - - -
RS-stocknr. 291-3201
FabrikantnummerBG5924.48 AC/DC24V
FabrikantDold
€ 203,63
Each
Aantal stuks
24 V dc 1 - Emergency Stop - - - 4 Safemaster - - - - -
RS-stocknr. 733-2351
Fabrikantnummer2TLA010026R0500
FabrikantABB
€ 236,70
Each
Aantal stuks
230 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 4 - - - Terminal Block - -
RS-stocknr. 757-9320
FabrikantnummerG9SX-GS226-T15-RT DC24
FabrikantOmron
€ 380,16
Each
Aantal stuks
24 V dc 2 - Safety Switch/Interlock - - - - - - - Screw - -
RS-stocknr. 271-518
FabrikantnummerUE403-A0930
FabrikantSick
€ 333,00
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 360-4352
FabrikantnummerXPSAF5130P
€ 186,75
Each
Aantal stuks
24 V ac/dc 1, 2 - Safety Switch/Interlock - - - 3 Preventa - - Screw - -
RS-stocknr. 780-5095
FabrikantnummerR1.188.3740.0 - SNO1012K-A
FabrikantWieland
€ 126,57
Each
Aantal stuks
24 V ac/dc 1 - - - - - 2 SafeRELAY Manual - Screw - -
RS-stocknr. 733-2391
Fabrikantnummer2TLA010029R0000
FabrikantABB
€ 159,30
Each
Aantal stuks
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 2 - - - Terminal Block - -
RS-stocknr. 489-6372
Fabrikantnummer777601
FabrikantPilz
€ 232,90
Each
Aantal stuks
24 V dc 1, 2 - Safety Switch/Interlock - - - 2 PNOZ X - - Screw - -
RS-stocknr. 240-8670
FabrikantnummerBN5983.53 DC24V
FabrikantDold
€ 374,57
Each
Aantal stuks
24 V dc 2 1 Emergency Stop - - - 3 Safemaster Monitored - Terminal Block - -
RS-stocknr. 666-7117
Fabrikantnummer2963776
FabrikantPhoenix Contact
€ 145,76
Each
Aantal stuks
24 V ac/dc 2 1 Emergency Stop, Safety Switch/Interlock - - - 3 - - 3 Screw - -
RS-stocknr. 447-4512
FabrikantnummerXPSAR351144
€ 365,49
Each
Aantal stuks
115 V ac 1, 2 2 Light Beam/Curtain - - - 7 Preventa - - - - -
RS-stocknr. 327-7629
FabrikantnummerBG5925.22 AC/DC24V
FabrikantDold
€ 227,91
Each
Aantal stuks
24 V ac/dc 1, 2 - Emergency Stop - - - 3 Safemaster - - - - -
RS-stocknr. 814-6921
FabrikantnummerXPSAFL5130P
€ 183,06
Each
Aantal stuks
24 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 Preventa Monitored - Screw - -
RS-stocknr. 489-6401
Fabrikantnummer774581
FabrikantPilz
€ 138,70
Each
Aantal stuks
24 V dc 1 - Expansion Module - - - 4 PNOZ X - - Screw - -
RS-stocknr. 812-3899
FabrikantnummerXPSBAE5120P
€ 118,89
Each
Aantal stuks
24 V ac/dc - 1 Two-Hand Control - - - 2 Preventa - - Screw - -
RS-stocknr. 122-2498
FabrikantnummerR1.188.1440.0
FabrikantWieland
€ 206,55
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. 812-8960
FabrikantnummerESR5-NO-31-24VAC-DC
FabrikantEaton
€ 220,81
Each
Aantal stuks
- 2 - Emergency Stop, Safety Switch/Interlock - - - 3 - Automatic, Manual - Screw - -