Safety Relays

A safety relay is an automation device that monitors for potential errors or faults in machinery or plants and works to prevent injury and reduce risk. If an error occurs, the safety relay initiates the appropriate response to reduce the risk and bring the environment back to a safe, acceptable level. Monitoring processes using safety relays protects both the machinery and the employees, prevents potential expensive maintenance and equipment replacement, and reduces risk of human injury.

Example functions include initiating a controlled pause in machinery or equipment to safely stop movement until an obstacle is removed. They can also be used as an emergency stop mechanism, switching off the power to particular machinery or plants until it is safe to resume power and continue.

What types of safety relays are there?

Safety relays can be single function or multi-function. Single function relays monitor for a specific type of activity and are programmed individually to monitor their respective tasks. Multi-function safety relays can monitor different functions and can be used in place of several single function, individual units to monitor the same number of activities.

The benefits of using multi-function relays include simpler installation and less wiring as fewer individual units are needed. This also makes more economical use of panel space, additionally giving greater flexibility to make changes within the design or panel as fewer units need to be removed or repositioned.

Where are safety relays used?

Safety relays are found across many industries where automation is used within a process or for a whole process. Anyone can integrate a safety relay within a circuit to create a safety circuit without any specific training. They 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

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Beskrivning Pris Supply Voltage Number of Channels Auxiliary Contacts Safety Contacts Function Safety Category ISO 13849-1 Reset Method SIL IEC 61508 PL ISO 13849-1 Range Configurable Terminal Type Standards Met Depth
RS-artikelnummer 733-2391
Tillv. art.nr2TLA010029R0000 RT9 24DC
VarumärkeABB
1 603,27 kr
Each
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24V dc 1, 2 - 2 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 - 3 e - - - - 120mm
RS-artikelnummer 245-1848
Tillv. art.nr774310
VarumärkePilz
2 361,12 kr
Each
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24V ac/dc 2 1 3 Safety Switch/Interlock 4 Automatic, Monitored 3 e PNOZ X - Screw - 121mm
RS-artikelnummer 733-2436
Tillv. art.nr2TLA020052R1000 Vital 1
VarumärkeABB
2 669,63 kr
Each
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24V dc - - 2 Light Beam/Curtain, Safety Switch/Interlock 4 Automatic & Manual 3 e - - Screw - 120mm
RS-artikelnummer 291-3273
Tillv. art.nrOA 5669.12/983/61 DC24V
VarumärkeDold
151,75 kr
Each
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- - - - - - - - - - - - - 13mm
RS-artikelnummer 890-3389
Tillv. art.nrG9SE-201-DC24
VarumärkeOmron
1 414,00 kr
Each
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24V dc 2 1 2 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 4 Automatic & Manual - - - Yes Screw - 111.6mm
RS-artikelnummer 156-106
Tillv. art.nr750104
VarumärkePilz
2 282,52 kr
Each
Enheter
24V dc 2 1 3 Emergency Stop 4 Automatic, Manual, Monitored 3 e PNOZsigma Yes Screw - 120mm
RS-artikelnummer 240-8743
Tillv. art.nrBD5987.02/001 AC50/60Hz 230V
VarumärkeDold
3 507,60 kr
Each
Enheter
230V ac 2 - 2 Emergency Stop 4 - 3 e Safemaster - - - 121mm
RS-artikelnummer 240-8692
Tillv. art.nrBD5935.48 DC24V
VarumärkeDold
3 704,78 kr
Each
Enheter
24V dc 1, 2 - 4 Emergency Stop 4 - 3 e Safemaster - Screw - 121mm
RS-artikelnummer 893-7698
Tillv. art.nr2700540
VarumärkePhoenix Contact
1 184,50 kr
Each
Enheter
24V dc 2 3 3 Emergency Stop, Safety Switch/Interlock 4 Automatic & Manual 3 - PSRmini No Screw - 114.5mm
RS-artikelnummer 890-3382
Tillv. art.nrG9SE-401-DC24
VarumärkeOmron
1 652,00 kr
Each
Enheter
24V dc 2 1 4 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 4 Automatic & Manual - - - Yes Screw - 111.6mm
RS-artikelnummer 156-083
Tillv. art.nr750103
VarumärkePilz
1 754,44 kr
Each
Enheter
24V dc 2 - 2 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 4 Automatic, Manual, Monitored 3 e PNOZsigma Yes Screw - 120mm
RS-artikelnummer 245-1854
Tillv. art.nr774318
VarumärkePilz
2 361,12 kr
Each
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24 V dc, 230V ac 2 1 3 Emergency Stop 4 Automatic, Monitored 3 e PNOZ X - Screw - 121mm
RS-artikelnummer 422-5152
Tillv. art.nrXPSAK311144
VarumärkeSchneider Electric
2 795,94 kr
Each
Enheter
24V ac/dc 2 1 3 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 Automatic & Manual 3 e Preventa Yes Screw - 114mm
RS-artikelnummer 549-530
Tillv. art.nrG9SB-2002-A AC/DC24
VarumärkeOmron
2 193,00 kr
Each
Enheter
24V ac/dc 2 - 2 Emergency Stop 4 Automatic - - - - - - 112mm
RS-artikelnummer 893-7701
Tillv. art.nr2700569
VarumärkePhoenix Contact
1 184,50 kr
Each
Enheter
24V dc 2 3 3 Emergency Stop, Safety Switch/Interlock 4 Automatic & Manual 3 - PSRmini No Screw - 114.5mm
RS-artikelnummer 515-1759
Tillv. art.nrR1.188.0500.1
VarumärkeWieland
2 714,94 kr
Each
Enheter
24V ac/dc 2 1 3 Safety Switch/Interlock 2 Monitored 2 d safeRELAY - Screw - 114mm
RS-artikelnummer 447-5593
Tillv. art.nr440R-N23118
1 660,06 kr
Each
Enheter
230V ac 2 - 2 Light Beam/Curtain, Safety Switch/Interlock 4 Monitored 3 e Minotaur - - - 22.5mm
RS-artikelnummer 447-5559
Tillv. art.nr440R-N23114
1 437,19 kr
Each
Enheter
24V ac/dc 2 - 2 Light Beam/Curtain, Safety Switch/Interlock 4 Automatic & Manual 3 e Minotaur - - - 22.5mm
RS-artikelnummer 666-7044
Tillv. art.nr2963802
VarumärkePhoenix Contact
1 437,22 kr
Each
Enheter
24V ac/dc 1 1 4 Emergency Stop, Safety Switch/Interlock 1 - 1 c - No Screw - 114.5mm
RS-artikelnummer 245-1955
Tillv. art.nr774150
VarumärkePilz
2 766,45 kr
Each
Enheter
24V dc 2 1 8 Expansion Module 4 Automatic 3 e PNOZ X - Screw - 121mm