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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Omschrijving Prijs 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-stocknr. 330-0757
Fabrikantnummer440R-S35003
€ 508,00
Each
Aantal stuks
230 V ac - 1 Speed/Standstill Monitoring - - - 2 - - - - - -
RS-stocknr. 757-9339
FabrikantnummerG9SX-NS202-RT DC24
FabrikantOmron
€ 203,07
Each
Aantal stuks
24 V dc - - Safety Switch/Interlock - - - - - - - Screw - -
Nieuw
RS-stocknr. 200-6177
FabrikantnummerXPSUAB31CP
€ 131,29
Each
Aantal stuks
48 to230 V 1 - Emergency Stop - - - 1 - - - - - -
RS-stocknr. 780-5091
FabrikantnummerR1.188.3710.0 - SNZ1022K-A
FabrikantWieland
€ 144,04
Each
Aantal stuks
115 → 230 V ac 2 - - - - - 2 SafeRELAY - - Screw - -
Nieuw
RS-stocknr. 191-9874
Fabrikantnummer751189
FabrikantPilz
€ 220,93
Each
Aantal stuks
24 V dc 2 1 Safety Switch - - - 3 PNOZ s9 Manual 4 Cage Clamp - -
RS-stocknr. 712-5257
Fabrikantnummer2900526
FabrikantPhoenix Contact
€ 149,78
Each
Aantal stuks
24 V ac/dc 2 1 Safety Switch/Interlock - - - 2 - - 3 Screw - -
RS-stocknr. 375-3779
FabrikantnummerBG5933.22 AC24V
FabrikantDold
€ 239,91
Each
Aantal stuks
24 V ac - - Two-Hand Control - - - 3 Safemaster - - - - -
RS-stocknr. 656-6073
FabrikantnummerLG5924.02/61 DC24V
FabrikantDold
€ 135,59
Each
Aantal stuks
24 V ac/dc 1 - Emergency Stop - - - 2 Safemaster - - Terminal Block - -
RS-stocknr. 181-1416
FabrikantnummerXPSATE5110P
€ 357,20
Each
Aantal stuks
100 - 120 V, 200 - 240 V - - - - - - - - - - - - -
RS-stocknr. 447-5773
Fabrikantnummer440R-M23086
€ 276,00
Each
Aantal stuks
115 V ac 1 1 Light Beam/Curtain, Safety Switch/Interlock - - - 2 Minotaur Automatic, Manual, Monitored - Screw - -
Nieuw
RS-stocknr. 201-1473
FabrikantnummerXPSUDN13AC
€ 259,90
Each
Aantal stuks
24 V ac/dc 1 8 Emergency Stop - - - 5 - - - - - -
RS-stocknr. 125-1106
FabrikantnummerXPSVNE3742HSP
€ 440,37
Each
Aantal stuks
230 V ac - - - - - - - - - - Screw - -
RS-stocknr. 176-0032
Fabrikantnummer2TLA010050R0100
FabrikantABB Jokab
€ 241,00
Each
Aantal stuks
265 V ac, 375 V dc 2 3NO/NC Safety Switch - - - 4 Sentry Multi-Reset 4 Screw - -
Nieuw
RS-stocknr. 191-9863
Fabrikantnummer751132
FabrikantPilz
€ 202,78
Each
Aantal stuks
24 V dc 2 2 Safety Switch - - - 3 PNOZ s22 Automatic 4 Cage Clamp - -
RS-stocknr. 180-3066
Fabrikantnummer788-906
FabrikantWago
€ 42,02
Each
Aantal stuks
24 V dc - 2 Safety Relay - - - 2 - - - Cage Clamp - -
RS-stocknr. 780-5073
FabrikantnummerR1.188.3580.0 - SNO4083KM-A
FabrikantWieland
€ 223,42
Each
Aantal stuks
24 V dc 2 - - - - - 3 SafeRELAY Manual - Screw - -
Nieuw
RS-stocknr. 191-9871
Fabrikantnummer751184
FabrikantPilz
€ 243,88
Each
Aantal stuks
24 V dc 2 1 - - - - 3 PNOZ s5 Automatic, Manual 4 Cage Clamp - -
Nieuw
RS-stocknr. 201-1467
FabrikantnummerXPSUAT33A3AC
€ 369,51
Each
Aantal stuks
24 V ac/dc 1 8 Emergency Stop - - - 5 - - - - - -
RS-stocknr. 893-7688
Fabrikantnummer2700466
FabrikantPhoenix Contact
€ 113,53
Each
Aantal stuks
24 V dc 1 3 Emergency Stop, Safety Switch/Interlock - - - 3 PSRmini Automatic, Manual 1 Screw CUL, CULus, EAC, Functional Safety, UL -
RS-stocknr. 375-3757
FabrikantnummerBG5933.22 DC24V
FabrikantDold
€ 246,85
Each
Aantal stuks
24 V dc - - Two-Hand Control - - - 3 Safemaster - - Screw - -
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