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.

...
Read more Read less

Filters

Viewing 81 - 100 of 421 products
Results per page
Description Price Supply Voltage Number of Channels Auxiliary Contacts Function Safety Contacts Range Reset Method Safety Category Terminal Type Standards Met Depth Hazardous Area Certification Length Series
RS Stock No. 666-7117
Mfr. Part No.2963776
MYR637.27
Each
units
24 V ac/dc 2 1 Emergency Stop, Safety Switch/Interlock 3 - - 3 Screw - 114.5mm - 99mm -
RS Stock No. 455-5251
Mfr. Part No.3TK2840-1BB40
BrandSiemens
MYR548.92
Each
units
24 V dc 1 - Safety Switch/Interlock 2 SIRIUS Automatic, Monitored - Screw - 88mm - 100mm -
RS Stock No. 549-473
Mfr. Part No.G9SB-200-B AC/DC24
BrandOmron
MYR774.27
Each
units
24 V ac/dc 2 - Emergency Stop 2 - Automatic - - - 112mm - 100mm -
RS Stock No. 549-530
Mfr. Part No.G9SB-2002-A AC/DC24
BrandOmron
MYR852.10
Each
units
24 V ac/dc 2 - Emergency Stop 2 - Automatic - - - 112mm - 100mm -
RS Stock No. 362-0174
Mfr. Part No.774350
BrandPilz
MYR1,925.20
Each
units
24 V dc 2 1 Two-Hand Control 2 PNOZ X Monitored - Screw - 121mm - 87mm -
RS Stock No. 918-6649
Mfr. Part No.777512
BrandPilz
MYR1,801.78
Each
units
24 V dc 2 2 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 3 PNOZ X Automatic, Manual - Screw - 121mm - 94mm -
RS Stock No. 411-2157
Mfr. Part No.3TK2827-1BB40
BrandSiemens
MYR1,870.35
Each
units
24 V dc 1 1 Safety Switch/Interlock, Speed/Standstill Monitoring 2 SIRIUS Monitored - Screw - 120mm - 138.5mm -
RS Stock No. 712-5279
Mfr. Part No.2986957
MYR1,099.90
Each
units
24 V dc - - - 3 - - 3 Cage Clamp - 114.5mm - 112mm -
RS Stock No. 918-6686
Mfr. Part No.777301
BrandPilz
MYR1,001.55
Each
units
24 V ac/dc 2 1 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 3 PNOZ X Automatic, Manual - Screw - 121mm - 94mm -
RS Stock No. 733-2345
Mfr. Part No.2TLA010026R0200
BrandABB
MYR1,009.47
Each
units
24 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 - - - Terminal Block - 120mm - 84mm -
RS Stock No. 477-8684
Mfr. Part No.XPSCM1144
MYR1,570.75
Each
units
24 V dc - 4 Light Beam/Curtain 2 Preventa - - Screw - - - - -
RS Stock No. 609-7167
Mfr. Part No.XPSAFL5130
MYR1,044.73
Each
units
24 V ac/dc 1, 2 - Light Beam/Curtain 3 Preventa - - Screw - 114mm - 99mm -
RS Stock No. 712-5260
Mfr. Part No.2986960
MYR1,099.90
Each
units
24 V dc - - - 3 - - 3 Screw - 114.5mm - 99mm -
RS Stock No. 712-5248
Mfr. Part No.2900525
MYR1,068.75
Each
units
24 V ac/dc 2 1 Safety Switch/Interlock 2 - - 3 Screw - 114.5mm - 99mm -
RS Stock No. 861-4890
Mfr. Part No.2TLA020053R0000
BrandABB
MYR13.33
Each
units
- - - - - - - - - - - - - -
RS Stock No. 609-7151
Mfr. Part No.XPSAC1321
MYR1,006.67
Each
units
48 V ac - 1 Emergency Stop 3 Preventa - - Screw - 114mm - 99mm -
RS Stock No. 245-1955
Mfr. Part No.774150
BrandPilz
MYR1,507.32
Each
units
24 V dc 2 1 Expansion Module 8 PNOZ X - - Screw - 121mm - 87mm -
RS Stock No. 447-4528
Mfr. Part No.XPSAR371144
MYR2,146.70
Each
units
24 V dc, 240 V ac 1, 2 2 Light Beam/Curtain 7 Preventa - - Screw - 114mm - 99mm -
RS Stock No. 707-9983
Mfr. Part No.XPSVNE3442P
MYR2,248.19
Each
units
115 V 2 2 Speed/Standstill Monitoring 2 Preventa - - Screw - 99mm - 120mm -
RS Stock No. 757-9310
Mfr. Part No.G9SA-321-T075 AC/DC24
BrandOmron
MYR1,590.47
Each
units
24 V ac/dc 2 1 Emergency Stop 3 - - - - - 111mm - 94mm -
Related Products
Thermoplastic enclosureRFID-technology for needs-based protection against tampering3 different ...
Description:
Thermoplastic enclosureRFID-technology for needs-based protection against tampering3 different directions of actuationDoor stop with magnetic latchingConnection terminal or plug connectionSuitable for series-wiringRepeated individual coding with RFID technologyCoding level "High" according to ISO 141191 x ...
The RE1 and RE2 series from SICK are ...
Description:
The RE1 and RE2 series from SICK are compact non-contact safety switches that offer a long service life thanks to their durable and low maintenance design. Just one of these safety switches, in conjunction with a suitable safety module, makes ...
The RSS260 is a non contact safety switch ...
Description:
The RSS260 is a non contact safety switch with RFID technology whish is designed for applications in safety circuits and is used for monitoring the position of movable separating safety guards. In addition to its compact design and high protection ...
Safety relay for two-handed controlsDuring dangerous movements, the ...
Description:
Safety relay for two-handed controlsDuring dangerous movements, the relay requires the operator to keep both hands out of the danger zoneApplications: mechanical presses, hydraulic presses, safety control circuitsRemovable terminals with connection via spring terminalsDisplay LEDs for relay statusDIN rail ...