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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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. 893-7733
Mfr. Part No.2904956
HK$935.88
Each
units
24 V dc 2 1 Emergency Stop, Safety Switch/Interlock 1 PSRmini Automatic - Screw CUL, CULus, EAC, Functional Safety, UL 102.5mm - 6.8mm -
RS Stock No. 375-3779
Mfr. Part No.BG5933.22 AC24V
BrandDold
HK$1,742.76
Each
units
24 V ac - - Two-Hand Control 3 Safemaster - - - - 118mm - 84mm -
RS Stock No. 784-5793
Mfr. Part No.3SK1111-2AB30
BrandSiemens
HK$1,863.00
Each
units
24 V ac/dc 1 - - 4 SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 447-4528
Mfr. Part No.XPSAR371144
HK$4,440.00
Each
units
24 V dc, 240 V ac 1, 2 2 Light Beam/Curtain 7 Preventa - - Screw - 114mm - 99mm -
RS Stock No. 422-5152
Mfr. Part No.XPSAK311144
HK$2,824.16
Each
units
24 V ac/dc 2 1 Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 3 Preventa Automatic, Manual - Screw - 114mm - 99mm -
RS Stock No. 321-9049
Mfr. Part No.SNO 4062K-A-00C
BrandWieland
HK$1,130.80
Each
units
24 V ac/dc 2 1 Emergency Stop 2 SafeRELAY - - Screw - 114mm - 96.5mm -
RS Stock No. 176-0030
Mfr. Part No.2TLA010051R0100
BrandABB Jokab
HK$1,957.03
Each
units
265 V ac, 375 V dc - 3NO/NC Safety Switch 4 Sentry Multi-Reset 4 Screw - 120mm - 22.5mm -
RS Stock No. 123-2746
Mfr. Part No.280006
BrandIDEM
HK$2,906.34
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 -
RS Stock No. 656-6130
Mfr. Part No.LG5933.48 DC24V
BrandDold
HK$1,643.50
Each
units
24 V ac/dc - 1 Two-Hand Control 3 Safemaster Monitored - Screw - 121mm - 90mm -
RS Stock No. 814-6927
Mfr. Part No.XPSAC5121P
HK$2,595.76
Each
units
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock 3 Preventa Monitored - Screw - 114mm - 99mm -
RS Stock No. 203-8035
Mfr. Part No.774073
BrandPilz
HK$2,120.77
Each
units
24 V dc, 110 V ac 2 - Safety Switch/Interlock 2 - Automatic, Manual - Screw - 121mm - 87mm -
RS Stock No. 245-1955
Mfr. Part No.774150
BrandPilz
HK$2,210.00
Each
units
24 V dc 2 1 Expansion Module 8 PNOZ X - - Screw - 121mm - 87mm -
RS Stock No. 698-8707
Mfr. Part No.SRB200EXI-1R
BrandSchmersal
HK$4,928.18
Each
units
24 V dc 2 - Safety Switch/Interlock 2 PROTECT Monitored - Screw - 121mm ATEX 100mm -
RS Stock No. 731-8960
Mfr. Part No.XPSBCE3410C
HK$2,450.00
Each
units
115 V ac - 1 Two-Hand Control 2 Preventa - - Cage Clamp - 114mm - 111mm -
RS Stock No. 757-9326
Mfr. Part No.G9SA-TH301 AC/DC24
BrandOmron
HK$2,021.80
Each
units
24 V ac/dc 2 1 Two-Hand Control 3 - - - - - 111mm - 94mm -
RS Stock No. 155-838
Mfr. Part No.750135
BrandPilz
HK$2,754.00
Each
units
48 → 240 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 2 PNOZsigma Automatic, Manual, Monitored - Screw - 120mm - 102mm -
RS Stock No. 362-0152
Mfr. Part No.774709
BrandPilz
HK$3,186.59
Each
units
24 V dc 1, 2 4 Safety Switch/Interlock 6 PNOZ X - - Screw - 121mm - 87mm -
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. 763-6864
Mfr. Part No.3TK2828-1AJ20
BrandSiemens
HK$3,780.00
Each
units
115 V ac 1, 2 - Safety Switch/Interlock, Speed/Standstill Monitoring 4 SIRIUS - - - - 120mm - 138.5mm -
RS Stock No. 712-5260
Mfr. Part No.2986960
HK$1,270.76
Each
units
24 V dc - - - 3 - - 3 Screw - 114.5mm - 99mm -
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