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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Description Prix 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
N° de stock RS 195-1724
Référence fabricantXCRZ03
3,33 €
Each
Unité
Lever - - - - - - - - - XCR - 200mm 6mm
N° de stock RS 757-9207
Référence fabricantD4NL-1CFG-B
MarqueOmron
134,34 €
Each
Unité
Various Options - 2NC + 1NC/1NO IP67 - Plastic - - - Slow Action D4NL PG13.5 95mm 88.5mm
N° de stock RS 700-4157
Référence fabricantXCMD2124L1
70,10 €
Each
Unité
Plunger DP NO/NC IP66, IP67, IP68 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 50mm 30mm
N° de stock RS 186-8188
Référence fabricantGLAC01B
MarqueHoneywell
72,69 €
Each
Unité
Plunger SPDT NO/NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA 20 mm Conduit 145.8mm 42mm
N° de stock RS 752-9609
Référence fabricantHL-5000G
MarqueOmron
62,75 €
Each
Unité
Roller Lever SPST NO/NC IP65 5 A ac, 400 mA dc - 250V 250V Screw Snap Action - Screw - -
N° de stock RS 132-9173
Référence fabricantXCSP3902P20
57,70 €
Each
Unité
Roller Plunger 3P NO/2NC IP66, IP67 - Plastic - - M20 - XCSP - 34mm 35mm
N° de stock RS 311-2184
Référence fabricantGLAC06A1B
MarqueHoneywell
76,31 €
Each
Unité
Rotary Lever DPST 2NC IP67 10 A Die Cast Zinc 500V 250V - Slow Action GLA 20 mm Conduit 145.8mm 42mm
N° de stock RS 181-2634
Référence fabricantXCMD2115L5
72,40 €
Each
Unité
- - - - - - - - - - Modicon - - -
N° de stock RS 302-0013
Référence fabricantXCLJ567H29
75,70 €
Each
Unité
Roller Plunger - NO/NC IP66 - Metal - - Screw - XCL-J - 120mm 44mm
N° de stock RS 133-0080
Référence fabricantXCSC513
172,00 €
Each
Unité
- - 2NO/NC IP67 6 A Zamak 240V 250V 1/2 in NPT - XCSC - 52mm 44mm
N° de stock RS 236-029
Référence fabricantXCKS131H29
40,10 €
Each
Unité
Lever DP NO/NC IP65 3 A Plastic 240V 250V - Snap Action OsiSense XC Screw 72.5mm 40mm
N° de stock RS 808-2990
Référence fabricantLSM2D
MarqueHoneywell
152,38 €
Each
Unité
Rotary Lever DPDT 2NO/2NC IP65, IP66, IP67 10 A Die Cast Zinc 600V 250V 3/4 in NPT Conduit Snap Action HDLS Plug In 47.8mm 45.3mm
N° de stock RS 311-2364
Référence fabricantGLAB01C
MarqueHoneywell
66,35 €
Each
Unité
Plunger SPDT NO/NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA PG13.5 Connector 145.8mm 42mm
N° de stock RS 125-8473
Référence fabricantXCMN2115L1
44,60 €
Each
Unité
Spring Return Roller Lever DP NO/NC IP65 6 A Plastic 240V 250V Fixed Cable Snap Action OsiSense XC Fixed Cable 30mm 32.4mm
N° de stock RS 843-1247
Référence fabricant017098 & AT0-02-1-IA
MarqueEaton
42,81 €
Each
Unité
Plunger - 2NC IP65 10 A Plastic 415V 220V - Slow Action AT0 Screw - -
N° de stock RS 843-1207
Référence fabricant005244 & AT4/11-1/I/S
MarqueEaton
54,44 €
Each
Unité
Plunger - NO/NC IP65 10 A Plastic 415V 220V - Slow Action AT4 Screw - -
N° de stock RS 908-3278
Référence fabricantWLNJ-Y-N
MarqueOmron
66,30 €
Each
Unité
Coil Spring SPST NO/NC IP67 10 A - 500V 250V M20 Snap Action WL Screw 40mm 42mm
Nouveau
N° de stock RS 217-7133
Référence fabricantGLCB06A1B-4
MarqueHoneywell
38,78 €
Each
Unité
Side Rotary With Roller DPST 2NC IP67 10 A Zinc Die-Cast 300V ac - - - - - - -
N° de stock RS 752-9933
Référence fabricantSHL-W155
MarqueOmron
46,02 €
Each
Unité
Lever SPDT NO/NC IP67 2 A ac, 200 mA dc - 480V 250V Screw Snap Action - Screw 73.5mm 40.9mm
N° de stock RS 125-8463
Référence fabricantXCKN2121P20
18,64 €
Each
Unité
Spring Return Roller Lever Plunger DP NO/NC IP65 10 A Plastic 240V 250V Screw Clamp Snap Action OsiSense XC Screw 30mm 30mm