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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Viewing 1 - 19 of 19 products
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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 Width
RS Stock No. 656-6130
Mfr. Part No.LG5933.48 DC24V
BrandDold
TWD9,604.00
Each
units
24 V ac/dc - 1 Two-Hand Control 3 Safemaster Monitored - Screw - 121mm - 90mm 22.5mm
RS Stock No. 375-3779
Mfr. Part No.BG5933.22 AC24V
BrandDold
TWD6,214.00
Each
units
24 V ac - - Two-Hand Control 3 Safemaster - - - - 118mm - 84mm 22.5mm
RS Stock No. 240-8686
Mfr. Part No.BN5983.53 AC50/60Hz 230V
BrandDold
TWD9,257.00
Each
units
230 V ac 2 1 Emergency Stop 3 Safemaster Monitored - Terminal Block - 121mm - 74mm 100mm
RS Stock No. 181-2781
Mfr. Part No.UG6980.04PS/61 DC24V
BrandDold
TWD10,052.00
Each
units
24 V dc 2 - - 4 - Auto Start, Manual PL e 4, SIL 3, 4 Screw - 110mm - 22.5mm 120.3mm
RS Stock No. 240-8800
Mfr. Part No.BD5980N.02 AC50/60Hz 230V
BrandDold
TWD13,824.00
Each
units
230 V ac 2 - Two-Hand Control 2 Safemaster - - Screw - 121mm - 74mm 45mm
RS Stock No. 240-8743
Mfr. Part No.BD5987.02/001 AC50/60Hz 230V
BrandDold
TWD12,030.00
Each
units
230 V ac 2 - Emergency Stop 2 Safemaster - - - - 121mm - 74mm 45mm
RS Stock No. 240-8721
Mfr. Part No.BO 5988.47/124 DC24V + AC230V 1-10s
BrandDold
TWD19,543.00
Each
units
- - - - - - - - - - - - - -
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 - Emergency Stop 3 Safemaster - - - - 118mm - 84mm 45mm
RS Stock No. 240-8709
Mfr. Part No.BD5935.48 AC50/60Hz 230V
BrandDold
TWD13,227.00
Each
units
230 V ac 2 1 Emergency Stop 3 Safemaster Monitored - Terminal Block - 121mm - 74mm 45mm
RS Stock No. 291-3201
Mfr. Part No.BG5924.48 AC/DC24V
BrandDold
TWD8,793.00
Each
units
24 V dc 1 - Emergency Stop 4 Safemaster - - - - 121mm - 84mm 22.5mm
RS Stock No. 240-8737
Mfr. Part No.BD5987.02/001 DC24V
BrandDold
TWD7,672.00
Each
units
24 V dc 1, 2 - Emergency Stop 2 Safemaster - - Screw - 121mm - 74mm 45mm
RS Stock No. 181-2780
Mfr. Part No.UG6980.02PS/61 DC24V
BrandDold
TWD8,364.00
Each
units
24 V dc 2 - - 2 - Auto Start, Manual PL e 4, SIL 3, 4 Screw - 110mm - 22.5mm 120.3mm
RS Stock No. 327-7629
Mfr. Part No.BG5925.22 AC/DC24V
BrandDold
TWD9,454.00
Each
units
24 V ac/dc 1, 2 - Emergency Stop 3 Safemaster - - - - 118mm - 84mm 22.5mm
RS Stock No. 240-8670
Mfr. Part No.BN5983.53 DC24V
BrandDold
TWD15,012.00
Each
units
24 V dc 2 1 Emergency Stop 3 Safemaster Monitored - Terminal Block - 121mm - 74mm 100mm
RS Stock No. 181-2779
Mfr. Part No.UG6970.04PS/61 DC24V
BrandDold
TWD14,679.00
Each
units
24 V dc 2 - - 4 - Auto Start, Manual PL e 4, SIL 3, 4 Screw - 110mm - 22.5mm 120.3mm
RS Stock No. 240-8793
Mfr. Part No.BD5980N.02 DC24V
BrandDold
TWD7,408.00
Each
units
24 V dc 2 - Two-Hand Control 2 Safemaster - - Screw - 121mm - 74mm 45mm
RS Stock No. 375-3757
Mfr. Part No.BG5933.22 DC24V
BrandDold
TWD10,240.00
Each
units
24 V dc - - Two-Hand Control 3 Safemaster - - Screw - 121mm - 84mm 22.5mm
RS Stock No. 240-8692
Mfr. Part No.BD5935.48 DC24V
BrandDold
TWD12,700.00
Each
units
24 V dc 1, 2 - Emergency Stop 4 Safemaster - - Screw - 121mm - 74mm 45mm
RS Stock No. 240-8715
Mfr. Part No.BO 5988.61/024 DC24V + AC230V
BrandDold
TWD14,685.00
Each
units
24 V dc, 230 V ac 2 1 - 6 Safemaster Monitored - Terminal Block - 121mm - 74mm 100mm