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. 893-7688
Fabrikantnummer2700466
FabrikantPhoenix Contact
113,53 €
Each
Aantal stuks
24 V dc 1 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual 1 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7682
Fabrikantnummer2700467
FabrikantPhoenix Contact
113,53 €
Each
Aantal stuks
24 V dc 1 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual 1 Cage Clamp CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7745
Fabrikantnummer2904958
FabrikantPhoenix Contact
91,31 €
Each
Aantal stuks
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock - - - 2 PSRmini Automatic 3 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7708
Fabrikantnummer2700548
FabrikantPhoenix Contact
116,71 €
Each
Aantal stuks
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual - Cage Clamp CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7723
Fabrikantnummer2904952
FabrikantPhoenix Contact
91,31 €
Each
Aantal stuks
24 V dc 2 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Automatic - Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 666-7078
Fabrikantnummer2981936
FabrikantPhoenix Contact
85,20 €
Each
Aantal stuks
24 V dc - - Safety Switch/Interlock - - - - - - - - - -
RS-stocknr. 712-5266
Fabrikantnummer2986588
FabrikantPhoenix Contact
92,99 €
Each
Aantal stuks
24 V dc - - - - - - 3 - - 2 Screw - -
RS-stocknr. 801-6028
Fabrikantnummer2981457
FabrikantPhoenix Contact
65,72 €
Each
Aantal stuks
24 V ac/dc 1 - - - - - 6 - - 1 Cage Clamp - -
RS-stocknr. 712-5260
Fabrikantnummer2986960
FabrikantPhoenix Contact
117,59 €
Each
Aantal stuks
24 V dc - - - - - - 3 - - 3 Screw - -
RS-stocknr. 893-7711
Fabrikantnummer2904950
FabrikantPhoenix Contact
88,13 €
Each
Aantal stuks
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Automatic 1 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7720
Fabrikantnummer2904951
FabrikantPhoenix Contact
88,13 €
Each
Aantal stuks
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Manual 1 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7727
Fabrikantnummer2904953
FabrikantPhoenix Contact
91,31 €
Each
Aantal stuks
24 V dc 2 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Manual 3 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7691
Fabrikantnummer2700498
FabrikantPhoenix Contact
113,53 €
Each
Aantal stuks
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock - - - 2 PSRmini Automatic, Manual 3 Screw CUL, CULus, EAC, Functional Safety, UL -
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. 893-7701
Fabrikantnummer2700569
FabrikantPhoenix Contact
116,71 €
Each
Aantal stuks
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual 4 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 893-7694
Fabrikantnummer2700499
FabrikantPhoenix Contact
113,53 €
Each
Aantal stuks
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock - - - 2 PSRmini Automatic, Manual 3 Cage Clamp CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 801-5943
Fabrikantnummer2981062
FabrikantPhoenix Contact
166,33 €
Each
Aantal stuks
24 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 4 - Automatic, Manual 3 Cage Clamp - -
RS-stocknr. 801-5873
Fabrikantnummer2901422
FabrikantPhoenix Contact
152,02 €
Each
Aantal stuks
120 V ac/dc 2 - Safety Switch/Interlock - - - 4 - Automatic, Manual 3 Cage Clamp - -
RS-stocknr. 666-7056
Fabrikantnummer2981800
FabrikantPhoenix Contact
202,10 €
Each
Aantal stuks
24 V dc 2 2 Light Beam/Curtain, Safety Switch/Interlock - - - 2 - - 3 Screw - -
RS-stocknr. 177-4034
Fabrikantnummer2700525
FabrikantPhoenix Contact
221,50 €
Each
Aantal stuks
24 → 230 V ac/dc 2 - Emergency Stop - - - 3 - Manual 2 Terminal Block - -