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. 411-2157
Mfr. Part No.3TK2827-1BB40
BrandSiemens
PHP23,114.68
Each
units
24 V dc 1 1 Safety Switch/Interlock, Speed/Standstill Monitoring 2 SIRIUS Monitored - Screw - 120mm - 138.5mm -
RS Stock No. 784-5784
Mfr. Part No.3SK1111-1AW20
BrandSiemens
PHP12,018.92
Each
units
110 → 240 V ac/dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
RS Stock No. 528-0908
Mfr. Part No.3SE6806-2CD00
BrandSiemens
PHP25,642.78
Each
units
24 V dc 1 1 Safety Switch/Interlock 2 SIRIUS Monitored - - - 120mm - 100mm -
RS Stock No. 498-949
Mfr. Part No.3TK2826-1BB40
BrandSiemens
PHP15,857.27
Each
units
24 V dc 2 1 Emergency Stop, Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock 4 SIRIUS Automatic - Screw - 120mm - 138.5mm -
RS Stock No. 784-5780
Mfr. Part No.3SK1111-1AB30
BrandSiemens
PHP12,318.33
Each
units
24 V ac/dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
RS Stock No. 784-5800
Mfr. Part No.3SK1121-1AB40
BrandSiemens
PHP13,426.53
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
RS Stock No. 784-5807
Mfr. Part No.3SK1121-1CB42
BrandSiemens
PHP19,058.24
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
RS Stock No. 784-5844
Mfr. Part No.3SK1122-2CB42
BrandSiemens
PHP11,992.55
Each
units
24 V dc 1 - - - SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 183-7202
Mfr. Part No.3SK2611-3AA00
BrandSiemens
PHP26,184.62
Each
units
- - - - - SIRIUS - - Screw - 60mm - 96mm -
RS Stock No. 784-5803
Mfr. Part No.3SK1121-1CB41
BrandSiemens
PHP19,058.24
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
RS Stock No. 784-5796
Mfr. Part No.3SK1111-2AW20
BrandSiemens
PHP12,580.75
Each
units
110 → 240 V ac/dc 1 - - 4 SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 184-0136
Mfr. Part No.3SK29412AA10
BrandSiemens
PHP22,712.31
Each
units
- 2 - - - SIRIUS - 4, PLe 3, SIL 3 Plug In - 100mm - 22.5mm -
RS Stock No. 763-6864
Mfr. Part No.3TK2828-1AJ20
BrandSiemens
PHP22,869.09
Each
units
115 V ac 1, 2 - Safety Switch/Interlock, Speed/Standstill Monitoring 4 SIRIUS - - - - 120mm - 138.5mm -
RS Stock No. 784-5847
Mfr. Part No.3SK1122-2CB44
BrandSiemens
PHP11,446.49
Each
units
24 V dc 1 - - - SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 183-7200
Mfr. Part No.3SK2122-1AA10
BrandSiemens
PHP40,016.92
Each
units
24 V dc 4 - - - SIRIUS - PLe, SIL 3 Screw - 100mm - 45mm -
RS Stock No. 784-5825
Mfr. Part No.3SK1121-2CB44
BrandSiemens
PHP19,058.24
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 784-5819
Mfr. Part No.3SK1121-2AB40
BrandSiemens
PHP11,985.51
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 784-5822
Mfr. Part No.3SK1121-2CB42
BrandSiemens
PHP16,810.45
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Cage Clamp - 121.7mm - 100mm -
RS Stock No. 498-937
Mfr. Part No.3RK1205-0BG00-0AA2
BrandSiemens
PHP6,563.41
Each
units
26.5 → 31.5 V dc - - - 2 SIRIUS - - Cage Clamp - 91mm - 90mm -
RS Stock No. 784-5816
Mfr. Part No.3SK1121-1CB44
BrandSiemens
PHP19,058.24
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -