Non Contact Safety Switches

Non-contact safety switches are a type of safety switch that operates without the use of conductive contacts to complete or break the circuit. Instead, they utilise a magnet, transponder or inductor to detect when the power to a machine needs to be cut. They can be used in machine-guarding applications to prevent injury to personnel in hazardous areas.

What are the advantages of non-contact safety switches?

Non-contact safety switches can be preferable because they are very long lasting and require minimal maintenance They are also resistant to shock and vibrations, as well as being relatively tamper-proof.

Types of non-contact safety switches

Non-contact safety switches may operate using different methods, including by magnet, transponder or inductor. They can also differ in terms of their terminal type, connection type, and crucially, the distance at which the switch will be operated. This determines the level of sensitivity the switch has, and how quickly it will activate when it detects that power needs to be cut.


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Description Price Supply Voltage Safety Contacts Housing Material Auxiliary Contacts Connection Type Switch Type Range Terminal Type Series Switching Distance IP Rating Supply Current Actuator Included Actuator Type
RS Stock No. 528-0784
Mfr. Part No.3SE6605-1BA
BrandSiemens
$102.67
Each
units
100 V ac/dc - Plastic - - - Sirius 3m cable 3SE6 - IP67 - No Coded, Unique Coded
RS Stock No. 755-5706
Mfr. Part No.3SE6315-0BB01
BrandSiemens
$235.91
Each
units
20.4 → 26.4 V dc - Plastic - M12 - Sirius - 3SE6 11 (On) mm, 16 (Off) mm IP65, IP67, IP69K - Yes Coded, Unique Coded
RS Stock No. 528-0807
Mfr. Part No.3SE6605-2BA
BrandSiemens
$151.57
Each
units
100 V ac - Plastic - - Safety Sirius 3m cable 3SE6 5 mm, 15 mm IP67 - No Coded, Unique Coded
RS Stock No. 528-0835
Mfr. Part No.3SE6605-3BA
BrandSiemens
$92.92
Each
units
- - Plastic - - Safety Sirius 3m cable 3SE6 4 mm, 14 mm IP67 - No Coded, Unique Coded
RS Stock No. 749-7723
Mfr. Part No.3SE6604-2BA01
BrandSiemens
$147.90
Each
units
100 V - Plastic - - - Sirius - 3SE6 15 mm IP67 - No Coded, Unique Coded
RS Stock No. 749-7729
Mfr. Part No.3SE6604-2BA
BrandSiemens
$119.13
Each
units
- - Plastic - - - Sirius - 3SE6 15 mm IP67 - No Coded, Unique Coded
RS Stock No. 755-5712
Mfr. Part No.3SE6315-1BB01
BrandSiemens
$329.48
Each
units
20.4 → 26.4 V dc - Plastic - M12 - Sirius - 3SE6 11 (On) mm, 16 (Off) mm IP65, IP67, IP69K - Yes Coded, Unique Coded