Limit Switches

Limit switches are a contact proximity sensor device that consists of an actuator mechanically linked to a set of output contacts. When an object comes into contact with the actuator, the device operates the contacts to make or break an electrical connection.

Limit Switch Makeup

Limit switches are made up of three key components:
•Actuator Head - The actuator is the part of the switch that makes physical contact with the object. In some limit switches, the actuator is attached to an operating head which translates a rotary, linear, or perpendicular motion to open or close the electrical contacts of the switch.


•Switch Body – The switch body is the component containing the electrical contact mechanism, the contacts within the body open or close the electrical circuit when the actuator is activated.


•Receptacle/Terminals - The component containing the terminal screws or screw/clamp assembly necessary for wiring purposes.



Actuator Types

Limit switches are available with a wide range of actuator types. The type of actuator used can be determined by the mounting position, force required and objects to be detected.
•Rotary Lever - with lever actuators, a cam or plate hits the end of the lever arm which in turn rotates a shaft and operates the contacts in the switch. The rotation may be spring returned (momentary) or maintained.


•Plunger - Plunger types are best where short controlled machine movements are present or where mounting space does not permit a lever type.


•Cat Whisker or Coil Spring – Longer actuators with a coil wire that can be moved/bent in multiple directions. Typically used in conveying applications to count objects as they pass by.


•Forked – Used with maintained contacts, consisting of two roller levers. One roller will trip the switch and when the second is moved to the opposite direction it will reset the switch.

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Omschrijving Prijs Actuator Type Pole and Throw Configuration Normal State Configuration IP Rating Maximum Current Housing Material Maximum AC Voltage Maximum DC Voltage Connection Type Contact Type Series Terminal Type Length Width
RS-stocknr. 189-5279
Fabrikantnummer6083000208
FabrikantBernstein AG
€ 22,00
Each
Aantal stuks
Plunger DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 74mm
RS-stocknr. 189-5286
Fabrikantnummer6083000254
FabrikantBernstein AG
€ 26,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 105.5mm
RS-stocknr. 189-5289
Fabrikantnummer6083000262
FabrikantBernstein AG
€ 23,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 101.5mm
RS-stocknr. 189-5280
Fabrikantnummer6083000214
FabrikantBernstein AG
€ 26,00
Each
Aantal stuks
Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 74mm
RS-stocknr. 189-5287
Fabrikantnummer6083000255
FabrikantBernstein AG
€ 25,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 105.5mm
RS-stocknr. 189-5275
Fabrikantnummer6083000202
FabrikantBernstein AG
€ 17,00
Each
Aantal stuks
Plunger DPST 2NC IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN62 - 31mm 74mm
RS-stocknr. 189-5277
Fabrikantnummer6083000205
FabrikantBernstein AG
€ 16,00
Each
Aantal stuks
Plunger DPST 2NO IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN62 - 31mm 74mm
RS-stocknr. 189-5268
Fabrikantnummer6088103001
FabrikantBernstein AG
€ 18,91
Each
Aantal stuks
Plunger DPST NC/NO IP65 10 A Glass Fibre Reinforced Thermoplastic 240V 250V Screw Slow Action, Snap Action TI2 - 30mm 57mm
RS-stocknr. 189-5281
Fabrikantnummer6083000215
FabrikantBernstein AG
€ 25,00
Each
Aantal stuks
Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 74mm
RS-stocknr. 189-5285
Fabrikantnummer6083000229
FabrikantBernstein AG
€ 25,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 105.5mm
RS-stocknr. 189-5276
Fabrikantnummer6083000203
FabrikantBernstein AG
€ 16,00
Each
Aantal stuks
Plunger DPST 2NC IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN62 - 31mm 74mm
RS-stocknr. 189-5296
Fabrikantnummer6083000268
FabrikantBernstein AG
€ 29,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action I81 - 31mm 122.5mm
RS-stocknr. 189-5290
Fabrikantnummer6083000235
FabrikantBernstein AG
€ 28,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 108mm
RS-stocknr. 189-5282
Fabrikantnummer6083000221
FabrikantBernstein AG
€ 25,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 90mm
RS-stocknr. 189-5266
Fabrikantnummer6088153002
FabrikantBernstein AG
€ 22,45
Each
Aantal stuks
Plunger DPST NC/NO IP65 10 A Glass Fibre Reinforced Thermoplastic 240V 250V Screw Slow Action, Snap Action TI2 - 30mm 57mm
RS-stocknr. 189-5292
Fabrikantnummer6083000242
FabrikantBernstein AG
€ 26,00
Each
Aantal stuks
Plunger DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action I81 - 31mm 89.5mm
RS-stocknr. 189-5272
Fabrikantnummer6088185022
FabrikantBernstein AG
€ 37,25
Each
Aantal stuks
Lever, Roller DPST NC/NO IP65 10 A Glass Fibre Reinforced Thermoplastic 240V - Screw Slow Action, Snap Action TI2 - 30mm -
RS-stocknr. 189-5278
Fabrikantnummer6083000207
FabrikantBernstein AG
€ 23,00
Each
Aantal stuks
Plunger DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 74mm
RS-stocknr. 189-5288
Fabrikantnummer6083000261
FabrikantBernstein AG
€ 24,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action IN65 - 31mm 101.5mm
RS-stocknr. 189-5295
Fabrikantnummer6083000245
FabrikantBernstein AG
€ 29,00
Each
Aantal stuks
Lever, Roller DPST NC/NO IP66, IP67 5 A Glass Fibre Reinforced Thermoplastic 240V 24V Screw Slow Action, Snap Action I81 - 31mm 121mm