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. 666-7062
Mfr. Part No.2981680
TWD4,213.00
Each
units
24 V dc 1 - Expansion Module 6 - - 3 Screw - 114.5mm - 112mm -
RS Stock No. 666-7069
Mfr. Part No.2981499
TWD5,894.00
Each
units
24 V dc 2 1 Safety Switch/Interlock 2 - - 3 Screw - 114.5mm - 112mm -
RS Stock No. 893-7708
Mfr. Part No.2700548
TWD4,712.00
Each
units
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock 3 PSRmini Automatic, Manual - Cage Clamp CUL, CULus, EAC, Functional Safety, UL 114.5mm - 12.5mm -
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. 893-7688
Mfr. Part No.2700466
TWD4,608.00
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. 893-7701
Mfr. Part No.2700569
TWD4,737.00
Each
units
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock 3 PSRmini Automatic, Manual 4 Screw CUL, CULus, EAC, Functional Safety, UL 114.5mm - 112.2mm -
RS Stock No. 177-4038
Mfr. Part No.2702383
TWD5,717.00
Each
units
24 V dc 2 - Emergency Stop 5 - Manual 1 Terminal Block - 114.5mm - 116.6mm -
RS Stock No. 893-7691
Mfr. Part No.2700498
TWD4,608.00
Each
units
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock 2 PSRmini Automatic, Manual 3 Screw CUL, CULus, EAC, Functional Safety, UL 114.5mm - 112.2mm -
RS Stock No. 177-4036
Mfr. Part No.2700575
TWD8,369.00
Each
units
24 V dc 2 - Two Hand Control 2 - Manual 1 Terminal Block - 114.5mm - 116.6mm -
RS Stock No. 893-7733
Mfr. Part No.2904956
TWD3,718.00
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. 893-7705
Mfr. Part No.2700570
TWD4,737.00
Each
units
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock 3 PSRmini Automatic, Manual 4 Cage Clamp CUL, CULus, EAC, Functional Safety, UL 114.5mm - 116.6mm -
RS Stock No. 893-7723
Mfr. Part No.2904952
TWD3,706.00
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. 801-5943
Mfr. Part No.2981062
TWD5,670.00
Each
units
24 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 4 - Automatic, Manual 3 Cage Clamp - 114.5mm - 112mm -
RS Stock No. 893-7720
Mfr. Part No.2904951
TWD3,577.00
Each
units
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock 1 PSRmini Manual 1 Screw CUL, CULus, EAC, Functional Safety, UL 102.5mm - 93.1mm -
RS Stock No. 712-5279
Mfr. Part No.2986957
TWD5,046.00
Each
units
24 V dc - - - 3 - - 3 Cage Clamp - 114.5mm - 112mm -
RS Stock No. 177-4039
Mfr. Part No.2702356
TWD14,143.00
Each
units
24 V dc 2 - - 1 - Manual 1 Terminal Block - 114.5mm - 116.6mm -
New
RS Stock No. 190-8413
Mfr. Part No.2702524
TWD6,235.00
Each
units
24 V dc 2 - - 1 - - SIL 3 Screw - 93.1mm ATEX, IECEx 6.8mm -
RS Stock No. 893-7694
Mfr. Part No.2700499
TWD4,608.00
Each
units
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock 2 PSRmini Automatic, Manual 3 Cage Clamp CUL, CULus, EAC, Functional Safety, UL 114.5mm - 116.6mm -
RS Stock No. 893-7682
Mfr. Part No.2700467
TWD4,608.00
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. 177-4037
Mfr. Part No.2702095
TWD6,278.00
Each
units
24 V dc 1 - Emergency Stop 2 - Manual 1 Terminal Block - 114.5mm - 116.6mm -