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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Beskrivning Pris 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-artikelnummer 733-2391
Tillv. art.nr2TLA010029R0000
VarumärkeABB
1 482,45 kr
Each
Enheter
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 2 - - - Terminal Block - -
RS-artikelnummer 733-2436
Tillv. art.nr2TLA020052R1000
VarumärkeABB
2 504,24 kr
Each
Enheter
24 V dc - - Light Beam/Curtain, Safety Switch/Interlock - - - 2 - Automatic, Manual - Screw - -
RS-artikelnummer 917-6676
Tillv. art.nr2TLA010005R0100
VarumärkeABB
1 809,09 kr
Each
Enheter
24 V ac/dc 1 1 Emergency Stop, Safety Switch/Interlock - - - 3 - Automatic - Screw - -
RS-artikelnummer 917-6673
Tillv. art.nr2TLA010033R3000
VarumärkeABB
1 657,15 kr
Each
Enheter
24 V dc 2 - Emergency Stop, Safety Switch/Interlock - - - 4 - Automatic - Screw CCC, CCSAus, CE, EN 60204-1:2006 + A1:2009, EN 62061:2005, EN 954-1:1996, EN ISO 12100-1:2003, EN ISO 12100-2:2003, EN ISO 13849-1:2008, IEC 60529, IEC 60947-5-1:2009, TUV -
RS-artikelnummer 733-2418
Tillv. art.nr2TLA010002R0000
VarumärkeABB
2 420,49 kr
Each
Enheter
24 V dc 2 - Two-Hand Control - - - 4 - - - Screw - -
RS-artikelnummer 733-2341
Tillv. art.nr2TLA010026R0000
VarumärkeABB
2 035,22 kr
Each
Enheter
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 4 - - - Terminal Block - -
RS-artikelnummer 733-2373
Tillv. art.nr2TLA010028R2000
VarumärkeABB
3 291,53 kr
Each
Enheter
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 5 - - - Terminal Block - -
RS-artikelnummer 733-2360
Tillv. art.nr2TLA010028R1000
VarumärkeABB
3 274,78 kr
Each
Enheter
24 V dc 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 5 - - - Terminal Block - -
RS-artikelnummer 733-2424
Tillv. art.nr2TLA010002R0400
VarumärkeABB
2 683,39 kr
Each
Enheter
115 V ac 2 - Two-Hand Control - - - 4 - - - Screw - -
RS-artikelnummer 733-2351
Tillv. art.nr2TLA010026R0500
VarumärkeABB
2 202,73 kr
Each
Enheter
230 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 4 - - - Terminal Block - -
RS-artikelnummer 733-2357
Tillv. art.nr2TLA010026R0400
VarumärkeABB
2 294,86 kr
Each
Enheter
115 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 4 - - - Terminal Block - -
RS-artikelnummer 733-2389
Tillv. art.nr2TLA010028R2400
VarumärkeABB
3 660,05 kr
Each
Enheter
115 V ac 1, 2 - Light Beam/Curtain, Safety Mat/Edge, Safety Switch/Interlock - - - 5 - - - Terminal Block - -
RS-artikelnummer 733-2433
Tillv. art.nr2TLA010002R0500
VarumärkeABB
2 462,37 kr
Each
Enheter
230 V ac 2 - Two-Hand Control - - - 4 - - - Screw - -
RS-artikelnummer 917-6664
Tillv. art.nr2TLA010033R2000
VarumärkeABB
1 373,57 kr
Each
Enheter
24 V dc 1 - Emergency Stop, Safety Switch/Interlock - - - 4 - Automatic - Screw - -
RS-artikelnummer 917-6660
Tillv. art.nr2TLA010004R0000
VarumärkeABB
2 222,77 kr
Each
Enheter
24 V dc 2 1 Two-Hand Control - - - 3 - Automatic - Screw - -