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. 744-8705
Mfr. Part No.750330
BrandPilz
TWD29,850.00
Each
units
24 → 240 V ac/dc 1 2 Speed/Standstill Monitoring 2 - - - Screw - 98mm - 120mm -
RS Stock No. 741-8666
Mfr. Part No.SRB324ST 24V (V.3)
BrandSchmersal
TWD13,595.00
Each
units
24 V ac/dc 1, 2 - Light Beam/Curtain, Safety Switch/Interlock - PROTECT - - Screw - 121mm - 100mm -
RS Stock No. 784-5881
Mfr. Part No.3SK1230-1AW20
BrandSiemens
TWD4,980.00
Each
units
110 → 240 V ac/dc - - - - SIRIUS Automatic - Screw - 121.7mm - 100mm -
RS Stock No. 382-2049
Mfr. Part No.011-149
BrandSmartscan
TWD4,172.00
Each
units
24 V dc 2 1 Light Beam/Curtain 2 - Automatic, Manual - - - 60mm - 90mm -
RS Stock No. 757-9323
Mfr. Part No.G9SA-501 AC100-240
BrandOmron
TWD11,223.00
Each
units
100 → 240 V ac 2 1 Emergency Stop 5 - - - - - 111mm - 94mm -
RS Stock No. 183-7199
Mfr. Part No.3SK2112-2AA10
BrandSiemens
TWD19,488.00
Each
units
24 V dc 2 - - - SIRIUS - PLe, SIL 3 Push In - 100mm - 22.5mm -
RS Stock No. 155-838
Mfr. Part No.750135
BrandPilz
TWD11,143.00
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. 549-530
Mfr. Part No.G9SB-2002-A AC/DC24
BrandOmron
TWD5,794.00
Each
units
24 V ac/dc 2 - Emergency Stop 2 - Automatic - - - 112mm - 100mm -
RS Stock No. 123-2746
Mfr. Part No.280006
BrandIDEM
TWD11,412.00
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. 757-9339
Mfr. Part No.G9SX-NS202-RT DC24
BrandOmron
TWD10,200.00
Each
units
24 V dc - - Safety Switch/Interlock - - - - Screw - 115mm - 100mm -
RS Stock No. 183-7202
Mfr. Part No.3SK2611-3AA00
BrandSiemens
TWD18,754.00
Each
units
- - - - - SIRIUS - - Screw - 60mm - 96mm -
RS Stock No. 125-1103
Mfr. Part No.XPSTSA5142P
TWD6,235.00
Each
units
24 V ac/dc - - Safety Switch/Interlock - Preventa Manual PLd Category 3, SIL CL2 Screw CSA, EN/IEC 60204-1, EN/IEC 60947-5-1, TUV, UL 114mm - 45mm -
RS Stock No. 240-8670
Mfr. Part No.BN5983.53 DC24V
BrandDold
TWD11,524.00
Each
units
24 V dc 2 1 Emergency Stop 3 Safemaster Monitored - Terminal Block - 121mm - 74mm -
RS Stock No. 733-2391
Mfr. Part No.2TLA010029R0000
BrandABB
TWD5,212.00
Each
units
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 2 - - - Terminal Block - 120mm - 84mm -
RS Stock No. 731-8963
Mfr. Part No.XPSBCE3410P
TWD9,340.00
Each
units
115 V ac - 1 Two-Hand Control 2 Preventa - - Screw - 114mm - 99mm -
RS Stock No. 176-0034
Mfr. Part No.2TLA010041R0600
BrandABB Jokab
TWD4,339.00
Each
units
24 V dc - 4NO/NC Safety Switch 5 Sentry Multi-Reset 4 Screw - 120mm - 22.5mm -
RS Stock No. 240-8709
Mfr. Part No.BD5935.48 AC50/60Hz 230V
BrandDold
TWD10,140.00
Each
units
230 V ac 2 1 Emergency Stop 3 Safemaster Monitored - Terminal Block - 121mm - 74mm -
RS Stock No. 893-7698
Mfr. Part No.2700540
TWD4,822.00
Each
units
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock 3 PSRmini Automatic, Manual 3 Screw CUL, CULus, EAC, Functional Safety, UL 114.5mm - 112.2mm -
RS Stock No. 698-8704
Mfr. Part No.SRB101EXI-1A
BrandSchmersal
TWD15,211.00
Each
units
24 V dc 2 1 Safety Switch/Interlock 1 PROTECT Automatic, Manual - Screw - 121mm ATEX 100mm -
RS Stock No. 784-5822
Mfr. Part No.3SK1121-2CB42
BrandSiemens
TWD12,480.00
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -