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.

...
Read more Read less

Filters

Viewing 341 - 360 of 363 products
Results per page
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. 239-1049
Mfr. Part No.774303
BrandPilz
HK$1,525.81
Each
units
24 V ac/dc 2 - Light Beam/Curtain, Safety Switch/Interlock 2 PNOZ X Manual - Screw - 121mm - 87mm -
RS Stock No. 784-5816
Mfr. Part No.3SK1121-1CB44
BrandSiemens
HK$3,280.00
Each
units
24 V dc 1 - - 4 SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
New
RS Stock No. 191-9859
Mfr. Part No.751109
BrandPilz
HK$1,631.77
Each
units
24 V dc 2 1 Safety Switch 3 PNOZ s9 Manual 4 Cage Clamp - 120mm - 98mm -
RS Stock No. 146-5863
Mfr. Part No.SRB-E-201LC
BrandSchmersal
HK$1,547.86
Each
units
24 V dc 1, 2 - - - - Automatic - Plug In, Screw - 98mm - 22.5mm -
RS Stock No. 177-9020
Mfr. Part No.SCR4-W22-3.5-SD
HK$1,235.47
Each
units
24 V dc, 230 V ac 1 3NO/NC Two-Hand Control - - - - Screw - 114.5mm - 22.5mm -
RS Stock No. 477-8684
Mfr. Part No.XPSCM1144
HK$2,326.77
Each
units
24 V dc - 4 Light Beam/Curtain 2 Preventa - - Screw - - - - -
RS Stock No. 183-7201
Mfr. Part No.3SK2122-2AA10
BrandSiemens
HK$6,527.08
Each
units
24 V dc 4 - - - SIRIUS - PLe, SIL 3 Push In - 100mm - 45mm -
RS Stock No. 123-2743
Mfr. Part No.280001
BrandIDEM
HK$1,101.63
Each
units
24 V ac/dc 1 1 Emergency Stop 3 Viper Automatic - Screw CULus, EN 60204-1, EN 62061, EN ISO 12100, EN ISO 13849-1, EN ISO 13849-2, TUV, UL 508 99mm - 22.5mm -
RS Stock No. 893-7701
Mfr. Part No.2700569
HK$966.65
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. 155-838
Mfr. Part No.750135
BrandPilz
HK$2,754.00
Each
units
48 → 240 V ac/dc 2 - Emergency Stop, Light Beam/Curtain, Safety Switch/Interlock 2 PNOZsigma Automatic, Manual, Monitored - Screw - 120mm - 102mm -
RS Stock No. 893-7739
Mfr. Part No.2904955
HK$934.41
Each
units
24 V dc 2 1 Emergency Stop, Safety Switch/Interlock 1 PSRmini Manual 4 Screw CUL, CULus, EAC, Functional Safety, UL 102.5mm - 93.1mm -
RS Stock No. 814-6949
Mfr. Part No.XPSDME1132P
HK$4,334.62
Each
units
24 V dc 1 2 Safety Switch/Interlock 2 Preventa Monitored - Screw - 114mm - 99mm -
RS Stock No. 146-5865
Mfr. Part No.SRB-E-204PE
BrandSchmersal
HK$1,426.67
Each
units
24 V dc 1, 2 - - - - Automatic - Plug In, Screw - 98mm - 22.5mm -
RS Stock No. 177-9019
Mfr. Part No.SCR4-W22-3.5-D
HK$1,235.47
Each
units
24 V dc, 230 V ac 1 3NO/NC Two-Hand Control - - - - Screw - 114.5mm - 22.5mm -
RS Stock No. 123-2739
Mfr. Part No.280006-P
BrandIDEM
HK$3,459.87
Each
units
24 V ac/dc 2 3 Emergency Stop, Safety Switch/Interlock 7 Viper Automatic, Manual - Plug In CULus, EN 60204-1, EN 62061, EN ISO 12100, EN ISO 13849-1, EN ISO 13849-2, TUV, UL 508 99mm - 45mm -
RS Stock No. 893-7698
Mfr. Part No.2700540
HK$1,014.48
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. 784-5838
Mfr. Part No.3SK1122-1CB42
BrandSiemens
HK$1,863.16
Each
units
24 V dc 1 - - - SIRIUS Automatic, Monitored - Screw - 121.7mm - 100mm -
RS Stock No. 780-5089
Mfr. Part No.R1.188.3840.0 - SNO4083KM-A
BrandWieland
HK$2,001.31
Each
units
115 → 230 V ac 2 - - 3 SafeRELAY Manual - Screw - - - - -
RS Stock No. 123-2738
Mfr. Part No.280005-P
BrandIDEM
HK$3,227.88
Each
units
24 V ac/dc 2 3 Emergency Stop, Safety Switch/Interlock 7 Viper Automatic, Manual - Plug In CULus, EN 60204-1, EN 62061, EN ISO 12100, EN ISO 13849-1, EN ISO 13849-2, TUV, UL 508 99mm - 45mm -
RS Stock No. 893-7694
Mfr. Part No.2700499
HK$1,161.64
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 -
Related Products
PushPull bulkhead mounted housing with HARTING PushPull technologyCompact, ...
Description:
PushPull bulkhead mounted housing with HARTING PushPull technologyCompact, space-saving design for device integration of RJ45-, USB-, Signal- or Power-pcb femaleHigh packing density (spacing 27 x 21 mm).
IP67 Common Core field installable IEC 61076-3-106 Variant ...
Description:
IP67 Common Core field installable IEC 61076-3-106 Variant 1 compliant RJ45 industrial circular plug and receptacle kits for use with Cat 5e cable in harsh environments. These industrial circular Ethernet IP67 RJ45 plug and receptacle kits have a pass-through modular ...
19" rack mount unit 1 HU with 24 ...
Description:
19" rack mount unit 1 HU with 24 RJ45 jacks assembled on one common PCBNo special tooling required for mounting of cover (shielded type)Printed circuit board is mounted horizontallyGrounding using the enclosed earth connection cable (shielded types)360° shielding can be ...
Category 3 right angle SMT RJ11, RJ12 and ...
Description:
Category 3 right angle SMT RJ11, RJ12 and RJ45 modular jacks with an industry standard footprint and a low 11.5 mm profile. These cat 3 low profile modular RJ jacks have black UL 94V-0 thermoplastic housings, highly reliable gold plated ...