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. 136-5921
FabrikantnummerEx ES 97 R 11 -60 c
FabrikantSteute
293,22 €
Each
Aantal stuks
Roller/Plunger DPST NO/NC IP66, IP67, IP69 4 A Glass-Fibre, Thermoplastic 500V - Cable Positive Break, Slow Action Ex 97 Screw 787.4mm 2316.48mm
RS-stocknr. 136-5923
FabrikantnummerEx ES 98 -11 -40C
FabrikantSteute
259,18 €
Each
Aantal stuks
Plunger DPST NO/NC IP66 4.4 (T6) A, 6.6 (T5) A Aluminium 250V 125V Cable Positive Break, Slow Action Ex 98 Screw 1016mm 2768.6mm
RS-stocknr. 136-5907
FabrikantnummerEx 14 WR 2O-5m
FabrikantSteute
102,02 €
Each
Aantal stuks
Roller Plunger with Collar DPST 2NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - 762mm 1958.34mm
RS-stocknr. 136-5911
FabrikantnummerEx 14 RUV 1O/1S-5m
FabrikantSteute
122,93 €
Each
Aantal stuks
Emergency-Stop Push-Button DPST NO/NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - - 1778mm
RS-stocknr. 136-5913
FabrikantnummerEx 14 RUV 2O-5m
FabrikantSteute
118,85 €
Each
Aantal stuks
Emergency-Stop Push-Button DPST 2NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - - 1778mm
RS-stocknr. 136-5920
FabrikantnummerEx ES 97 W 02 -60 c
FabrikantSteute
278,70 €
Each
Aantal stuks
Plunger with Collar DPST 2NC IP66, IP67, IP69 4 A Glass-Fibre, Thermoplastic 400V - Cable Positive Break, Slow Action Ex 97 Screw 787.4mm 2057.4mm
RS-stocknr. 136-5908
FabrikantnummerEx 14 D 1O/1S-5m
FabrikantSteute
118,96 €
Each
Aantal stuks
Lever DPST NO/NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - 762mm 838.2mm
RS-stocknr. 136-5925
FabrikantnummerEx ES 98 R -11 -40C
FabrikantSteute
261,90 €
Each
Aantal stuks
Roller/Plunger DPST NO/NC IP66 4.4 (T6) A, 6.6 (T5) A Aluminium 250V 125V Cable Positive Break, Slow Action Ex 98 Screw 1016mm 3022.6mm
RS-stocknr. 136-5914
FabrikantnummerEx 14 RUV-S 2O-5m
FabrikantSteute
118,85 €
Each
Aantal stuks
Emergency-Stop Push-Button DPST NO/NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - - 1778mm
RS-stocknr. 136-5909
FabrikantnummerEx 14 D 2O-5m
FabrikantSteute
118,96 €
Each
Aantal stuks
Lever DPST 2NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - 762mm 838.2mm
RS-stocknr. 136-5918
FabrikantnummerEx ES 97 DS 02 -60 c
FabrikantSteute
322,14 €
Each
Aantal stuks
Lever DPST 2NC IP66, IP67, IP69 4 A Glass-Fibre, Thermoplastic 400V - Cable Positive Break, Slow Action Ex 97 Screw 787.4mm 2895.6mm
RS-stocknr. 136-5919
FabrikantnummerEx ES 97 W 11 -60 c
FabrikantSteute
278,70 €
Each
Aantal stuks
Plunger with Collar DPST NO/NC IP66, IP67, IP69 4 A Glass-Fibre, Thermoplastic 500V - Cable Positive Break, Slow Action Ex 97 Screw 787.4mm 2057.4mm
RS-stocknr. 136-5927
FabrikantnummerEx ES 98 R -02 -40C
FabrikantSteute
251,83 €
Each
Aantal stuks
Roller/Plunger DPST 2NC IP66 4.4 (T6) A, 6.6 (T5) A Aluminium 250V 125V Cable Positive Break, Slow Action Ex 98 Screw 1016mm 3022.6mm
RS-stocknr. 136-5906
FabrikantnummerEx 14 WR 1O/1S-5m
FabrikantSteute
106,10 €
Each
Aantal stuks
Roller Plunger with Collar DPST NO/NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - 762mm 1958.34mm
RS-stocknr. 136-5928
FabrikantnummerEx ES 98 D-11 -40C
FabrikantSteute
257,22 €
Each
Aantal stuks
Lever DPST NO/NC IP66 4.4 (T6) A, 6.6 (T5) A Aluminium 250V 125V Cable Positive Break, Slow Action Ex 98 Screw 1016mm 3365.5mm
RS-stocknr. 136-5903
FabrikantnummerEx 14 W 1O/1S-5m
FabrikantSteute
101,51 €
Each
Aantal stuks
Plunger with Collar DPST NO/NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - 762mm 1699.26mm
RS-stocknr. 136-5905
FabrikantnummerEx 14 W 2O-5m
FabrikantSteute
97,61 €
Each
Aantal stuks
Plunger with Collar DPST 2NC IP65 6 A @ 250 V ac, 250 mA @ 230 V dc Glass-Fibre, Thermoplastic 250V 230V Cable Positive Break, Slow Action Ex 14 - 762mm 1719.58mm
RS-stocknr. 136-5917
FabrikantnummerEx ES 97 DS 11 -60 c
FabrikantSteute
304,06 €
Each
Aantal stuks
Lever DPST NO/NC IP66, IP67, IP69 4 A Glass-Fibre, Thermoplastic 500V - Cable Positive Break, Slow Action Ex 97 Screw 787.4mm 4775.2mm
RS-stocknr. 136-5915
FabrikantnummerEx ES 97 D 11 -60 c
FabrikantSteute
300,89 €
Each
Aantal stuks
Lever DPST NO/NC IP66, IP67, IP69 4 A Glass-Fibre, Thermoplastic 500V - Cable Positive Break, Slow Action Ex 97 Screw 787.4mm 2895.6mm