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. 757-9301
Mfr. Part No.G9SB-3010 DC24
BrandOmron
HK$1,412.40
Each
units
24 V dc 2 1 Emergency Stop 3 - - - - - 112mm - 100mm -
RS Stock No. 176-0031
Mfr. Part No.2TLA010051R0000
BrandABB Jokab
HK$1,603.74
Each
units
24 V dc - 3NO/NC Safety Switch 4 Sentry Multi-Reset 4 Screw - 120mm - 22.5mm -
RS Stock No. 757-9323
Mfr. Part No.G9SA-501 AC100-240
BrandOmron
HK$2,640.88
Each
units
100 → 240 V ac 2 1 Emergency Stop 5 - - - - - 111mm - 94mm -
RS Stock No. 814-6924
Mfr. Part No.XPSAC3421P
HK$1,950.13
Each
units
115 V ac 1 1 Emergency Stop, Safety Switch/Interlock 3 Preventa Monitored - Screw - 114mm - 99mm -
RS Stock No. 917-6660
Mfr. Part No.2TLA010004R0000
BrandABB
HK$1,987.08
Each
units
24 V dc 2 1 Two-Hand Control 3 - Automatic - Screw - 120mm - 74mm -
RS Stock No. 123-2737
Mfr. Part No.280002-P
BrandIDEM
HK$1,439.35
Each
units
24 V ac/dc 2 1 Emergency Stop, Safety Switch/Interlock 3 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 - 22.5mm -
RS Stock No. 183-7198
Mfr. Part No.3SK2112-1AA10
BrandSiemens
HK$4,438.05
Each
units
24 V dc 2 - - - SIRIUS - PLe, SIL 3 Screw - 100mm - 22.5mm -
RS Stock No. 123-2745
Mfr. Part No.280005
BrandIDEM
HK$2,674.35
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. 240-8800
Mfr. Part No.BD5980N.02 AC50/60Hz 230V
BrandDold
HK$2,337.50
Each
units
230 V ac 2 - Two-Hand Control 2 Safemaster - - Screw - 121mm - 74mm -
RS Stock No. 757-9317
Mfr. Part No.G9SA-301 AC100-240
BrandOmron
HK$2,189.00
Each
units
100 → 240 V ac 2 1 Emergency Stop 1 - - - - - 111mm - 94mm -
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. 549-536
Mfr. Part No.G9SA-501 24AC/DC
BrandOmron
HK$2,296.80
Each
units
24 V ac/dc 1, 2 1 Emergency Stop 5 - - - - - 111mm - 76mm -
RS Stock No. 784-5829
Mfr. Part No.3SK1122-1CB41
BrandSiemens
HK$1,863.16
Each
units
24 V dc 1 - - - SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
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. 784-5800
Mfr. Part No.3SK1121-1AB40
BrandSiemens
HK$2,085.94
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
RS Stock No. 240-8715
Mfr. Part No.BO 5988.61/024 DC24V + AC230V
BrandDold
HK$3,063.96
Each
units
24 V dc, 230 V ac 2 1 - 6 Safemaster Monitored - Terminal Block - 121mm - 74mm -
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. 733-2341
Mfr. Part No.2TLA010026R0000
BrandABB
HK$1,474.66
Each
units
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 - - - Terminal Block - 120mm - 84mm -
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. 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 -