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 467 products
Results per page
Description Price Supply Voltage Number of Channels Safety Contacts Function Auxiliary Contacts Reset Method Range Safety Category Terminal Type Standards Met Depth Hazardous Area Certification Length Width
RS Stock No. 200-6136
Mfr. Part No.XPSUAT33A3AP
TWD28,066.00
Each
units
48 → 230 V ac/dc 3 7 Emergency Stop 8 - Preventa PLe Category 4, SIL CL3 Screw CCC, CE, CULus, EAC, FS, Green Premium, K-Mark, RCM, REACH, RoHS, S-Mark 120mm - 100mm 45mm
RS Stock No. 656-6130
Mfr. Part No.LG5933.48 DC24V
BrandDold
TWD9,604.00
Each
units
24 V ac/dc - 3 Two-Hand Control 1 Monitored Safemaster - Screw - 121mm - 90mm 22.5mm
RS Stock No. 123-2745
Mfr. Part No.280005
BrandIDEM
TWD10,727.00
Each
units
24 V ac/dc 2 7 Emergency Stop, Safety Switch/Interlock 3 Automatic, Manual Viper - Screw CULus, EN 60204-1, EN 62061, EN ISO 12100, EN ISO 13849-1, EN ISO 13849-2, TUV, UL 508 99mm - 45mm 111mm
RS Stock No. 239-1049
Mfr. Part No.774303
BrandPilz
TWD6,142.00
Each
units
24 V ac/dc 2 2 Light Beam/Curtain, Safety Switch/Interlock - Manual PNOZ X - Screw - 121mm - 87mm 22.5mm
RS Stock No. 240-8715
Mfr. Part No.BO 5988.61/024 DC24V + AC230V
BrandDold
TWD15,126.00
Each
units
24 V dc, 230 V ac 2 6 - 1 Monitored Safemaster - Terminal Block - 121mm - 74mm 100mm
RS Stock No. 784-5819
Mfr. Part No.3SK1121-2AB40
BrandSiemens
TWD12,785.00
Each
units
24 V dc 1 4 - - Automatic, Monitored SIRIUS - Cage Clamp - 121.7mm - 100mm 22.5mm
New
RS Stock No. 219-9210
Mfr. Part No.XPSABV1133C
TWD13,346.00
Each
units
230 V - - - - - - - - - - - - -
New
RS Stock No. 207-2655
Mfr. Part No.1017062
TWD13,821.00
Each
units
24 V 1 1 Safety Switch 1 - - - - - - - - -
New
RS Stock No. 219-9217
Mfr. Part No.XPSATR1153P
TWD17,854.00
Each
units
230 V - - - - - - - - - - - - -
RS Stock No. 422-5180
Mfr. Part No.XPSAK371144
TWD15,184.00
Each
units
230 V ac 2 3 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 1 Automatic, Manual Preventa - Screw - 114mm - 99mm 45mm
RS Stock No. 741-8647
Mfr. Part No.SRB207AN 24V
BrandSchmersal
TWD14,067.00
Each
units
24 V dc - - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - PROTECT - Screw - 121mm - 100mm 45mm
RS Stock No. 893-7720
Mfr. Part No.2904951
TWD3,670.00
Each
units
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock 1 Manual PSRmini 1 Screw CUL, CULus, EAC, Functional Safety, UL 102.5mm - 93.1mm 6.8mm
RS Stock No. 201-5581
Mfr. Part No.2903254
TWD14,407.00
Each
units
24 V dc 4 3 Emergency Stop, Safety Switch None - - - - - - - - -
RS Stock No. 191-9861
Mfr. Part No.751110
BrandPilz
TWD8,626.00
Each
units
24 V dc 2 4 Safety Switch 1 Automatic PNOZ s10 4 Cage Clamp - 120mm - 98mm 45mm
RS Stock No. 206-5904
Mfr. Part No.103014308
TWD15,334.00
Each
units
24 V 2 3 - 1 - - - - - - - - -
RS Stock No. 447-4534
Mfr. Part No.XPSDMB1132
TWD10,341.00
Each
units
24 V dc 1, 2 2 Safety Switch/Interlock 2 - Preventa 4 Screw - 114mm - 22.5mm 99mm
RS Stock No. 857-7536
Mfr. Part No.NES13DB24SA
TWD18,435.00
Each
units
24 V ac/dc - - - - - - - - - 99mm - 22.5mm 114mm
RS Stock No. 378-5388
Mfr. Part No.774435
BrandPilz
TWD19,756.00
Each
units
115 V ac 2 3 Two-Hand Control 1 Manual PNOZ X - Screw - 121mm - 101mm 45mm
RS Stock No. 489-6388
Mfr. Part No.777606
BrandPilz
TWD17,366.00
Each
units
24 240 V ac/dc 1, 2 7 Safety Switch/Interlock 2 Automatic, Manual PNOZ X PLe Category 4 Screw - 121mm - 94mm 90mm
RS Stock No. 327-7613
Mfr. Part No.BH5928.92 DC24V 1-10S
BrandDold
TWD15,563.00
Each
units
24 V ac/dc 1, 2 3 Emergency Stop - - Safemaster - - - 118mm - 84mm 45mm