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 341 - 360 of 366 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 Width
RS Stock No. 893-7714
Mfr. Part No.2700553
$242.13
Each
units
24 V dc 2 3 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 3 PSRmini Automatic, Manual - Screw cUL, cULus, EAC, Functional Safety, UL 114.5mm - 12.5mm 112.2mm
RS Stock No. 733-2357
Mfr. Part No.2TLA010026R0400
BrandABB
$479.55
Each
units
115 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 - - - Terminal Block - 120mm - 84mm 45mm
RS Stock No. 701-9216
Mfr. Part No.UE12-2FG2DO
BrandSick
$192.50
Each
units
24 V dc 1, 2 - Light Beam/Curtain 3 - - - Screw - 70.8mm - 89.8mm 17.8mm
RS Stock No. 656-6130
Mfr. Part No.LG5933.48 DC24V
BrandDold
$524.12
Each
units
24 V ac/dc - 1 Two-Hand Control 3 Safemaster Monitored - Screw - 121mm - 90mm 22.5mm
RS Stock No. 757-9326
Mfr. Part No.G9SA-TH301 AC/DC24
BrandOmron
$453.36
Each
units
24 V ac/dc 2 1 Two-Hand Control 3 - - - - - 111mm - 94mm 45mm
New
RS Stock No. 191-9866
Mfr. Part No.751136
BrandPilz
$702.89
Each
units
48 240 V ac/dc 2 1 - 3 PNOZ s6 Monitored 4 Screw - 120mm - 98mm 22.5mm
RS Stock No. 203-8035
Mfr. Part No.774073
BrandPilz
$439.47
Each
units
24 V dc, 110 V ac 2 - Safety Switch/Interlock 2 - Automatic, Manual - Screw - 121mm - 87mm 45mm
RS Stock No. 146-5868
Mfr. Part No.SRB-E-301ST
BrandSchmersal
$527.83
Each
units
24 V ac/dc 1, 2 1 - - - Automatic - Plug In, Screw - 98mm - 22.5mm 115mm
RS Stock No. 731-8951
Mfr. Part No.XPSBCE3110P
$571.01
Each
units
24 V ac/dc - 1 Two-Hand Control 2 Preventa - - Screw - 114mm - 99mm 22.5mm
RS Stock No. 814-6946
Mfr. Part No.XPSDMB1132P
$494.28
Each
units
24 V dc 1 2 Safety Switch/Interlock 2 Preventa Monitored - Screw - 114mm - 99mm 22.5mm
RS Stock No. 240-8715
Mfr. Part No.BO 5988.61/024 DC24V + AC230V
BrandDold
$886.57
Each
units
24 V dc, 230 V ac 2 1 - 6 Safemaster Monitored - Terminal Block - 121mm - 74mm 100mm
RS Stock No. 177-9022
Mfr. Part No.SCR2-W22-2.5-S
$243.13
Each
units
24 V dc, 230 V ac 1 2 Two-Hand Control - - - - Screw - - - - -
RS Stock No. 125-1096
Mfr. Part No.XPSAR371144P
$1,177.09
Each
units
24 V dc, 230 V ac 2 2 Emergency Stop 7 Preventa Manual PLe Category 4, SIL CL3 Screw CSA, EN/IEC 60204-1, EN/IEC 60947-5-1, TUV, UL 114mm - 90mm 99mm
RS Stock No. 741-8657
Mfr. Part No.SRB302X3-24VAC/DC-230VAC
BrandSchmersal
$550.99
Each
units
24 V ac/dc, 230 V ac 2 - Light Beam/Curtain, Safety Switch/Interlock - PROTECT - - Screw - 121mm - 100mm 45mm
RS Stock No. 240-8793
Mfr. Part No.BD5980N.02 DC24V
BrandDold
$569.46
Each
units
24 V dc 2 - Two-Hand Control 2 Safemaster - - Screw - 121mm - 74mm 45mm
RS Stock No. 712-5260
Mfr. Part No.2986960
$354.63
Each
units
24 V dc - - - 3 - - 3 Screw - 114.5mm - 99mm 17.5mm
RS Stock No. 123-2745
Mfr. Part No.280005
BrandIDEM
$589.43
Each
units
24 V ac/dc 2 3 Emergency Stop, Safety Switch/Interlock 7 Viper Automatic, Manual - 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. 893-7694
Mfr. Part No.2700499
$366.34
Each
units
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock 2 PSRmini Automatic, Manual 3 Cage Clamp cUL, cULus, EAC, Functional Safety, UL 114.5mm - 116.6mm 12.5mm
RS Stock No. 183-7198
Mfr. Part No.3SK2112-1AA10
BrandSiemens
$925.73
Each
units
24 V dc 2 - - - SIRIUS - PLe, SIL 3 Screw - 100mm - 22.5mm 124.5mm
RS Stock No. 177-9021
Mfr. Part No.SCR2-W22-2.5
$243.13
Each
units
24 V dc, 230 V ac 1 2 Two-Hand Control - - - - Screw - 114.5mm - 22.5mm 99mm
Related Products
Detects the stop condition of all types of ...
Description:
Detects the stop condition of all types of AC or DC motor driven machines which, when the motor runs down, produce a residual voltage in the windings. No additional sensor is required1 N/O and 1 N/C contacts, EN954-1 Category 3 ...
LED indication for supply voltage and safety circuits. ...
Description:
LED indication for supply voltage and safety circuits. Automatic restart function available. Contact current rating: 6A Conform to BS EN 60204 Part 1 1993; EN 954-1; IEC 204-1; VDE 0113 Dimensions (mm): H 96.5, W 22.5, L 114.
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 detection. ...
Description:
Single or dual channel cabling with short-circuit detection. Choice of self-monitoring or automatic reset. Display LEDs for status of channels 1 and 2, input circuits, power supply voltage and reset. Return loop for monitoring external contactors2 solid state outputs.