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. 712-5260
Fabrikantnummer2986960
FabrikantPhoenix Contact
€ 117,59
Each
Aantal stuks
24 V dc - - - - - - 3 - - 3 Screw - -
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. 712-5266
Fabrikantnummer2986588
FabrikantPhoenix Contact
€ 92,99
Each
Aantal stuks
24 V dc - - - - - - 3 - - 2 Screw - -
RS-stocknr. 666-7053
Fabrikantnummer2981428
FabrikantPhoenix Contact
€ 296,88
Each
Aantal stuks
24 V dc 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 6 - - 3 Screw - -
RS-stocknr. 801-6028
Fabrikantnummer2981457
FabrikantPhoenix Contact
€ 65,72
Each
Aantal stuks
24 V ac/dc 1 - - - - - 6 - - 1 Cage Clamp - -
RS-stocknr. 712-5250
Fabrikantnummer2900509
FabrikantPhoenix Contact
€ 153,81
Each
Aantal stuks
24 V ac/dc 1, 2 1 Safety Switch/Interlock - - - 3 - - 3 Screw - -
RS-stocknr. 666-7050
Fabrikantnummer2963721
FabrikantPhoenix Contact
€ 177,95
Each
Aantal stuks
24 V ac/dc 2 1 Two-Hand Control - - - 2 - - 3 Screw - -
RS-stocknr. 666-7044
Fabrikantnummer2963802
FabrikantPhoenix Contact
€ 136,81
Each
Aantal stuks
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 4 - - 1 Screw - -
RS-stocknr. 666-7062
Fabrikantnummer2981680
FabrikantPhoenix Contact
€ 116,81
Each
Aantal stuks
24 V dc 1 - Expansion Module - - - 6 - - 3 Screw - -
RS-stocknr. 666-7022
Fabrikantnummer2981020
FabrikantPhoenix Contact
€ 126,53
Each
Aantal stuks
24 V dc 1 - Emergency Stop, Safety Switch/Interlock - - - 3 - - - Screw - -
RS-stocknr. 712-5254
Fabrikantnummer2900510
FabrikantPhoenix Contact
€ 153,81
Each
Aantal stuks
24 V ac/dc 2 1 Safety Switch/Interlock - - - 3 - - 3 Screw - -
RS-stocknr. 893-7705
Fabrikantnummer2700570
FabrikantPhoenix Contact
€ 116,71
Each
Aantal stuks
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual 4 Cage Clamp CUL, CULus, EAC, Functional Safety, UL -
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. 177-4034
Fabrikantnummer2700525
FabrikantPhoenix Contact
€ 221,50
Each
Aantal stuks
24 → 230 V ac/dc 2 - Emergency Stop - - - 3 - Manual 2 Terminal Block - -
RS-stocknr. 177-4036
Fabrikantnummer2700575
FabrikantPhoenix Contact
€ 166,73
Each
Aantal stuks
24 V dc 2 - Two Hand Control - - - 2 - Manual 1 Terminal Block - -
RS-stocknr. 893-7739
Fabrikantnummer2904955
FabrikantPhoenix Contact
€ 91,31
Each
Aantal stuks
24 V dc 2 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Manual 4 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 177-4033
Fabrikantnummer2702192
FabrikantPhoenix Contact
€ 88,91
Each
Aantal stuks
24 V dc 1 - - - - - 1 - Manual 1 Terminal Block - -
RS-stocknr. 177-4035
Fabrikantnummer2700572
FabrikantPhoenix Contact
€ 146,88
Each
Aantal stuks
24 V dc 1 - Two Hand Control - - - 2 - Manual 1 Terminal Block - -
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. 177-4037
Fabrikantnummer2702095
FabrikantPhoenix Contact
€ 158,78
Each
Aantal stuks
24 V dc 1 - Emergency Stop - - - 2 - Manual 1 Terminal Block - -