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 Category ISO 13849-1 SIL IEC 61508 PL ISO 13849-1 Safety Contacts Range Reset Method Safety Category Terminal Type Standards Met Configurable
RS stock no. 712-5254
Mfr. Part No.2900510
R 2,836.14
Each
units
24 V ac/dc 2 1 Safety Switch/Interlock - - - 3 - - 3 Screw - -
RS stock no. 712-5279
Mfr. Part No.2986957
R 2,231.13
Each
units
24 V dc - - - - - - 3 - - 3 Cage Clamp - -
RS stock no. 712-5248
Mfr. Part No.2900525
R 3,751.33
Each
units
24 V ac/dc 2 1 Safety Switch/Interlock - - - 2 - - 3 Screw - -
RS stock no. 177-4033
Mfr. Part No.2702192
R 1,556.43
Each
units
24 V dc 1 - - - - - 1 - Manual 1 Terminal Block - -
RS stock no. 666-7038
Mfr. Part No.2963912
R 7,739.60
Each
units
24 V ac/dc 1, 2 1 Emergency Stop, Safety Switch/Interlock - - - 8 - - 3 Screw - -
RS stock no. 893-7714
Mfr. Part No.2700553
R 2,084.22
Each
units
24 V dc 2 3 Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual - Screw CUL, CULus, EAC, Functional Safety, UL -
RS stock no. 893-7708
Mfr. Part No.2700548
R 2,083.78
Each
units
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual - Cage Clamp CUL, CULus, EAC, Functional Safety, UL -
RS stock no. 893-7701
Mfr. Part No.2700569
R 2,081.53
Each
units
24 V dc 2 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual 4 Screw CUL, CULus, EAC, Functional Safety, UL -
RS stock no. 712-5266
Mfr. Part No.2986588
R 1,767.08
Each
units
24 V dc - - - - - - 3 - - 2 Screw - -
RS stock no. 666-7053
Mfr. Part No.2981428
R 7,438.14
Each
units
24 V dc 2 - Light Beam/Curtain, Safety Switch/Interlock - - - 6 - - 3 Screw - -
RS stock no. 177-4034
Mfr. Part No.2700525
R 5,148.67
Each
units
24 → 230 V ac/dc 2 - Emergency Stop - - - 3 - Manual 2 Terminal Block - -
RS stock no. 666-7078
Mfr. Part No.2981936
R 1,357.55
Each
units
24 V dc - - Safety Switch/Interlock - - - - - - - - - -
RS stock no. 767-6180
Mfr. Part No.2986562
R 1,988.52
Each
units
20.4 → 26.4 V dc 1 2 Safe Coupling Relay - - - - - - - - - -
RS stock no. 177-4032
Mfr. Part No.2702097
R 3,195.58
Each
units
24 V dc 2 - Emergency Stop - - - 2 - Manual 1 Terminal Block DIN EN 50178 -
RS stock no. 742-7471
Mfr. Part No.2981059
R 4,160.69
Each
units
24 V ac/dc 2 1 Light Beam/Curtain, Safety Switch/Interlock - - - 3 - - 3 Screw - -
RS stock no. 893-7745
Mfr. Part No.2904958
R 1,624.83
Each
units
24 V dc 2 2 Emergency Stop, Safety Switch/Interlock - - - 2 PSRmini Automatic 3 Screw CUL, CULus, EAC, Functional Safety, UL -
RS stock no. 893-7739
Mfr. Part No.2904955
R 1,625.08
Each
units
24 V dc 2 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Manual 4 Screw CUL, CULus, EAC, Functional Safety, UL -
RS stock no. 712-5250
Mfr. Part No.2900509
R 3,859.22
Each
units
24 V ac/dc 1, 2 1 Safety Switch/Interlock - - - 3 - - 3 Screw - -
RS stock no. 893-7711
Mfr. Part No.2904950
R 1,568.36
Each
units
24 V dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 1 PSRmini Automatic 1 Screw CUL, CULus, EAC, Functional Safety, UL -
RS stock no. 666-7056
Mfr. Part No.2981800
R 5,066.64
Each
units
24 V dc 2 2 Light Beam/Curtain, Safety Switch/Interlock - - - 2 - - 3 Screw - -