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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Beskrivning Pris 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-artikelnummer 245-1848
Tillv. art.nr774310
VarumärkePilz
2 148,53 kr
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24 V ac/dc 2 1 Safety Switch/Interlock - - - 3 PNOZ X Automatic, Monitored - Screw - -
RS-artikelnummer 156-106
Tillv. art.nr750104
VarumärkePilz
2 112,89 kr
Each
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24 V dc 2 1 Emergency Stop - - - 3 PNOZsigma Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 155-939
Tillv. art.nr750101
VarumärkePilz
1 328,57 kr
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24 V dc 1 - Emergency Stop, Safety Switch/Interlock - - - 2 PNOZsigma Automatic, Manual - Screw - -
RS-artikelnummer 245-1854
Tillv. art.nr774318
VarumärkePilz
2 148,53 kr
Each
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24 V dc, 230 V ac 2 1 Emergency Stop - - - 3 PNOZ X Automatic, Monitored - Screw - -
RS-artikelnummer 156-083
Tillv. art.nr750103
VarumärkePilz
1 628,40 kr
Each
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24 V dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 2 PNOZsigma Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 155-850
Tillv. art.nr750126
VarumärkePilz
2 112,89 kr
Each
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24 V dc 2 1 Two-Hand Control - - - 3 PNOZsigma - - Screw - -
RS-artikelnummer 245-1955
Tillv. art.nr774150
VarumärkePilz
2 517,44 kr
Each
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24 V dc 2 1 Expansion Module - - - 8 PNOZ X - - Screw - -
RS-artikelnummer 918-6645
Tillv. art.nr777313
VarumärkePilz
2 610,08 kr
Each
Enheter
24 → 240 V ac/dc 2 1 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 PNOZ X Automatic, Manual - Screw - -
RS-artikelnummer 239-1055
Tillv. art.nr774306
VarumärkePilz
1 600,04 kr
Each
Enheter
24 V ac/dc 2 - Safety Switch/Interlock - - - 2 PNOZ X Automatic, Manual - Screw - -
RS-artikelnummer 155-844
Tillv. art.nr750106
VarumärkePilz
3 560,96 kr
Each
Enheter
24 V dc 2 1 Two-Hand Control - - - 3 PNOZsigma - - Screw - -
RS-artikelnummer 155-822
Tillv. art.nr750105
VarumärkePilz
3 078,63 kr
Each
Enheter
24 V dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 2 PNOZsigma Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 362-0168
Tillv. art.nr774585
VarumärkePilz
1 360,72 kr
Each
Enheter
24 V dc 1 - Expansion Module - - - 4 PNOZ X Automatic - Screw - -
RS-artikelnummer 156-099
Tillv. art.nr750102
VarumärkePilz
1 567,56 kr
Each
Enheter
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 PNOZsigma Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 245-1860
Tillv. art.nr774080
VarumärkePilz
3 850,62 kr
Each
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24 V ac/dc 2 1 Safety Switch/Interlock - - - 7 - Automatic, Manual, Monitored - Screw - -
RS-artikelnummer 489-6366
Tillv. art.nr777602
VarumärkePilz
2 580,67 kr
Each
Enheter
24 V dc 1, 2 - Safety Switch/Interlock - - - 2 PNOZ X - - Screw - -
RS-artikelnummer 239-1083
Tillv. art.nr774340
VarumärkePilz
5 146,88 kr
Each
Enheter
24 V dc 1, 2 1 Two-Hand Control - - - 3 PNOZ X - - Screw - -
RS-artikelnummer 324-7268
Tillv. art.nr774056
VarumärkePilz
1 334,11 kr
Each
Enheter
230 V ac 1 - Safety Switch/Interlock - - - 2 PNOZ X - - Screw - -
RS-artikelnummer 239-1049
Tillv. art.nr774303
VarumärkePilz
1 600,04 kr
Each
Enheter
24 V ac/dc 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 2 PNOZ X Manual - Screw - -
RS-artikelnummer 362-0174
Tillv. art.nr774350
VarumärkePilz
3 886,44 kr
Each
Enheter
24 V dc 2 1 Two-Hand Control - - - 2 PNOZ X Monitored - Screw - -
RS-artikelnummer 239-1033
Tillv. art.nr774300
VarumärkePilz
1 587,88 kr
Each
Enheter
24 V ac/dc 1 1 Safety Switch/Interlock - - - 3 PNOZ X Automatic, Manual - Screw - -