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.
Description:
The HYGIECODE MMC-H safety switch has been developed
for non-contact interlocking of hinged, sliding or removable guard doors.It is ideal for applications that require a wide tolerance to misalignment, high switching capacity or high level of hygiene.When used with a dual channel safety relay, this safety switch can be used ...
Description:
The Allen Bradley Guard Master 440N series magnetic
safety switch has a supply voltage rating of 24VDC at 1A current. This switch comes with FRS2 GD2 housings and a 3m cable. It offers reliability together with tolerance to misalignment. It is designed to be installed so that when a guard ...
Description:
The D40 from Omron is a compact non-contact
door switch with easy to see red/yellow LED status indicators. The actuator is smaller than the switch saving space, even when mounted with an L-bracket, the actuator's height will not hinder installation or operation. Mount from whichever side provides the easiest wiring ...
Description:
The F3S-TGR non contact safety switches are designed
to interlock hinge, sliding or removable guard doors. Plastic and stainless steel switches are available, the latter are ideally suited to high hygiene demands in the food industry. The switches have a long sensing range to avoid false signals resulting from an ...
