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 341 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. 741-8669
Mfr. Part No.SRB202CA/QT 24VDC
BrandSchmersal
HK$3,038.91
Each
units
24 V dc 2 - Safety Switch/Interlock - PROTECT - - Screw - 121mm - 100mm -
RS Stock No. 181-2781
Mfr. Part No.UG6980.04PS/61 DC24V
BrandDold
HK$2,515.95
Each
units
24 V dc 2 - - 4 - Auto Start, Manual PL e 4, SIL 3, 4 Screw - 110mm - 22.5mm -
RS Stock No. 666-7056
Mfr. Part No.2981800
HK$1,593.34
Each
units
24 V dc 2 2 Light Beam/Curtain, Safety Switch/Interlock 2 - - 3 Screw - 114.5mm - 99mm -
RS Stock No. 893-7682
Mfr. Part No.2700467
HK$1,161.64
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. 123-2739
Mfr. Part No.280006-P
BrandIDEM
HK$3,459.87
Each
units
24 V ac/dc 2 3 Emergency Stop, Safety Switch/Interlock 7 Viper Automatic, Manual - Plug In CULus, EN 60204-1, EN 62061, EN ISO 12100, EN ISO 13849-1, EN ISO 13849-2, TUV, UL 508 99mm - 45mm -
RS Stock No. 784-5847
Mfr. Part No.3SK1122-2CB44
BrandSiemens
HK$1,863.16
Each
units
24 V dc 1 - - - SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 515-1759
Mfr. Part No.R1.188.0500.1
BrandWieland
HK$1,306.84
Each
units
24 V ac/dc 2 1 Safety Switch/Interlock 3 SafeRELAY Monitored - Screw - 114mm - 99mm -
RS Stock No. 180-6091
Mfr. Part No.1085345
BrandSick
HK$1,969.11
Each
units
30 V dc 2 - - 2 - Automatic, Manual Cat 4 Plug In - 124.6mm - 18mm -
RS Stock No. 123-2743
Mfr. Part No.280001
BrandIDEM
HK$1,101.63
Each
units
24 V ac/dc 1 1 Emergency Stop 3 Viper Automatic - Screw CULus, EN 60204-1, EN 62061, EN ISO 12100, EN ISO 13849-1, EN ISO 13849-2, TUV, UL 508 99mm - 22.5mm -
RS Stock No. 917-6676
Mfr. Part No.2TLA010005R0100
BrandABB
HK$1,493.66
Each
units
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock 3 - Automatic - Screw - 99mm - 82mm -
RS Stock No. 271-502
Mfr. Part No.UE10-3OS3D0
BrandSick
HK$1,597.17
Each
units
24 V dc - - - - - - - - - - - - UE10
RS Stock No. 733-2345
Mfr. Part No.2TLA010026R0200
BrandABB
HK$1,894.52
Each
units
24 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 - - - Terminal Block - 120mm - 84mm -
RS Stock No. 893-7688
Mfr. Part No.2700466
HK$940.34
Each
units
24 V dc 1 3 Emergency Stop, Safety Switch/Interlock 3 PSRmini Automatic, Manual 1 Screw CUL, CULus, EAC, Functional Safety, UL 114.5mm - 112.2mm -
RS Stock No. 549-546
Mfr. Part No.G9SA-321-T15 24AC/DC
BrandOmron
HK$2,523.40
Each
units
24 V ac/dc 1, 2 1 Emergency Stop 3 - - - - - 111mm - 76mm -
RS Stock No. 489-6394
Mfr. Part No.777949
BrandPilz
HK$4,120.00
Each
units
24 → 240 V ac/dc 1, 2 1 Speed/Standstill Monitoring 2 PNOZ X - - Screw - 121mm - 94mm -
RS Stock No. 122-2493
Mfr. Part No.R1.188.1840.0
BrandWieland
HK$1,668.68
Each
units
230 V ac 2 1 Elevator System, Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 3 SafeRELAY Manual - Screw CCC, CPT, CULus, EN 50156-1, EN 61511, EN 62061, EN 81-1, EN ISO 13849-1, FS, GL, GOST R, TUV 96.5mm - 22.5mm -
RS Stock No. 712-5266
Mfr. Part No.2986588
HK$1,006.08
Each
units
24 V dc - - - 3 - - 2 Screw - 114.5mm - 112mm -
RS Stock No. 378-5388
Mfr. Part No.774435
BrandPilz
HK$4,033.27
Each
units
115 V ac 2 1 Two-Hand Control 3 PNOZ X Manual - Screw - 121mm - 101mm -
RS Stock No. 239-1083
Mfr. Part No.774340
BrandPilz
HK$4,160.00
Each
units
24 V dc 1, 2 1 Two-Hand Control 3 PNOZ X - - Screw - 121mm - 87mm -
RS Stock No. 857-7536
Mfr. Part No.NES13DB24SA
HK$2,668.72
Each
units
24 V ac/dc - - - - - - - - - 99mm - 22.5mm -