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 346 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. 447-4528
Mfr. Part No.XPSAR371144
$930.26
Each
units
24 V dc, 240 V ac 1, 2 2 Light Beam/Curtain 7 Preventa - - Screw - 114mm - 99mm -
RS Stock No. 893-7682
Mfr. Part No.2700467
$178.54
Each
units
24 V dc 1 3 Emergency Stop, Safety Switch/Interlock 3 PSRmini Automatic, Manual 1 Cage Clamp CUL, CULus, EAC, Functional Safety, UL 114.5mm - 112.2mm -
RS Stock No. 812-8967
Mfr. Part No.ESR5-NO-41-24VAC-DC
BrandEaton
$629.61
Each
units
- 1 - Emergency Stop, Safety Switch/Interlock 4 - Automatic, Manual - Screw - 99mm - 22.5mm -
RS Stock No. 757-9317
Mfr. Part No.G9SA-301 AC100-240
BrandOmron
$413.25
Each
units
100 → 240 V ac 2 1 Emergency Stop 1 - - - - - 111mm - 94mm -
RS Stock No. 176-0034
Mfr. Part No.2TLA010041R0600
BrandABB Jokab
$244.80
Each
units
24 V dc - 4NO/NC Safety Switch 5 Sentry Multi-Reset 4 Screw - 120mm - 22.5mm -
RS Stock No. 731-8967
Mfr. Part No.XPSBCE3710C
$693.50
Each
units
230 V ac - 1 Two-Hand Control 2 Preventa - - Cage Clamp - 114mm - 111mm -
RS Stock No. 176-0030
Mfr. Part No.2TLA010051R0100
BrandABB Jokab
$417.52
Each
units
265 V ac, 375 V dc - 3NO/NC Safety Switch 4 Sentry Multi-Reset 4 Screw - 120mm - 22.5mm -
RS Stock No. 155-939
Mfr. Part No.750101
BrandPilz
$307.44
Each
units
24 V dc 1 - Emergency Stop, Safety Switch/Interlock 2 PNOZsigma Automatic, Manual - Screw - 120mm - 100mm -
RS Stock No. 812-3909
Mfr. Part No.XPSBAE3920P
$228.06
Each
units
115 → 230 V ac - 1 Two-Hand Control 2 Preventa - - Screw - 99mm - 22.5mm -
RS Stock No. 656-6089
Mfr. Part No.LG5924.02/61 AC50/60Hz 230V
BrandDold
$196.06
Each
units
230 V ac 1 - Emergency Stop 2 Safemaster - - Terminal Block - 121mm - 90mm -
RS Stock No. 666-7050
Mfr. Part No.2963721
$272.84
Each
units
24 V ac/dc 2 1 Two-Hand Control 2 - - 3 Screw - 114.5mm - 99mm -
RS Stock No. 857-7536
Mfr. Part No.NES13DB24SA
$549.04
Each
units
24 V ac/dc - - - - - - - - - 99mm - 22.5mm -
RS Stock No. 917-6660
Mfr. Part No.2TLA010004R0000
BrandABB
$364.86
Each
units
24 V dc 2 1 Two-Hand Control 3 - Automatic - Screw - 120mm - 74mm -
RS Stock No. 176-0035
Mfr. Part No.2TLA010040R0200
BrandABB Jokab
$244.80
Each
units
24 V dc 1 4 Safety Switch 4 Sentry Multi-Reset 4 Screw - 120mm - 22.5mm -
RS Stock No. 794-8814
Mfr. Part No.G7SA-5A1B DC24
BrandOmron
$40.08
Each
units
12 → 48 V dc 2 1 - 1 - Manual - PCB Pin - 24mm - 50mm -
RS Stock No. 382-2055
Mfr. Part No.011-160
BrandSmartscan
$349.10
Each
units
24 V dc 2 - Light Beam/Curtain 2 - Automatic - - - 60mm - 90mm -
RS Stock No. 176-0031
Mfr. Part No.2TLA010051R0000
BrandABB Jokab
$342.11
Each
units
24 V dc - 3NO/NC Safety Switch 4 Sentry Multi-Reset 4 Screw - 120mm - 22.5mm -
RS Stock No. 183-7201
Mfr. Part No.3SK2122-2AA10
BrandSiemens
$1,334.00
Each
units
24 V dc 4 - - - SIRIUS - PLe, SIL 3 Push In - 100mm - 45mm -
RS Stock No. 784-5881
Mfr. Part No.3SK1230-1AW20
BrandSiemens
$266.69
Each
units
110 → 240 V ac/dc - - - - SIRIUS Automatic - Screw - 121.7mm - 100mm -
RS Stock No. 666-7069
Mfr. Part No.2981499
$386.99
Each
units
24 V dc 2 1 Safety Switch/Interlock 2 - - 3 Screw - 114.5mm - 112mm -
Related Products
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 ...
Professional range of IDEM VIPER Safety Relays with ...
Description:
Professional range of IDEM VIPER Safety Relays with screw terminals. The safety relays incorporate expansion units. The relays can be directly wired to increase the number of safety output contacts. Designed to meet the latest safety standard and offer enhanced ...
The PNOZ X3 range of Safety Relays by ...
Description:
The PNOZ X3 range of Safety Relays by PILZ introduces your circuit to a safety related interruption wherein the primary applications are typically in potential hazardous environments where you need that quick power cut off. Particularly useful in automated environments ...
Single or dual channel cabling with short-circuit detectionChoice ...
Description:
Single or dual channel cabling with short-circuit detectionChoice of self-monitoring or automatic resetDisplay LEDs for status of channels 1 and 2, input circuits, power supply voltage and resetReturn loop for monitoring external contactors2 solid state outputs.