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 230-1872
Référence fabricantXCKS131
39,70 €
Each
Unité
Lever DP NO/NC IP65 3 A Plastic 240V 250V - Snap Action OsiSense XC Screw 72.5mm 40mm
N° de stock RS 749-7593
Référence fabricant3SE5112-0CR01
MarqueSiemens
48,60 €
Each
Unité
Spring Rod DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 40.5mm
N° de stock RS 344-3618
Référence fabricantSSCEB31A1B
MarqueHoneywell
110,66 €
Each
Unité
Rotary Lever SPDT NO/NC IP68 4 A Die Cast Zinc 240V - - Snap Action SSCE Wire Lead 65.1mm 16mm
N° de stock RS 447-3575
Référence fabricantZCP21
11,80 €
Each
Unité
- DP NO/NC - 1.5 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
N° de stock RS 435-0371
Référence fabricantZE-Q-2G
MarqueOmron
50,10 €
Each
Unité
Plunger SPDT NO/NC IP65 15 A - 480V 250V - Snap Action - Screw 63.7mm 86mm
N° de stock RS 447-3468
Référence fabricantXCKD2118P16
38,10 €
Each
Unité
Lever DP NO/NC - 3 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
N° de stock RS 447-3452
Référence fabricantXCKP2145P16
34,90 €
Each
Unité
Lever DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
N° de stock RS 410-6994
Référence fabricantC2-SU1Z ST.
MarqueBernstein AG
17,91 €
Each
Unité
Plunger - NO/NC IP20 - Fibreglass - - Screw - C2 - 44mm 26mm
N° de stock RS 360-8455
Référence fabricantZCKJ1
36,80 €
Each
Unité
- DP NO/NC IP65 10 A Metal 240V 250V - Snap Action OsiSense XC Screw 77mm 40mm
N° de stock RS 447-3604
Référence fabricantZCD21
18,10 €
Each
Unité
- DP NO/NC - 1.5 A Metal 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
N° de stock RS 539-343
Référence fabricant83871101
MarqueCrouzet
50,94 €
Each
Unité
Plunger - NO/NC IP66, IP67 6 A Metal 240V 125V Cable Snap Action - - 69.9mm 30mm
N° de stock RS 700-4309
Référence fabricantXCKJ10541H29
65,20 €
Each
Unité
Lever SPDT NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 77mm 40mm
N° de stock RS 230-1951
Référence fabricantXCKM121
48,40 €
Each
Unité
Plunger DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 64mm 63mm
N° de stock RS 749-7631
Référence fabricant3SE5122-0CE01
MarqueSiemens
48,96 €
Each
Unité
Roller Lever DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 56mm
N° de stock RS 235-981
Référence fabricantXCKM102H29
48,60 €
Each
Unité
Roller Plunger DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 64mm 63mm
N° de stock RS 836-2731
Référence fabricantD4B4A11N
MarqueOmron
56,85 €
Each
Unité
Roller Lever - 2NC IP67 - Metal - - Screw - D4B - 40mm 62mm
N° de stock RS 822-5658
Référence fabricantZE-Q22-2S
MarqueOmron
73,24 €
Each
Unité
Roller Plunger SPDT NO/NC IP65 15 A @ 480 V ac, 500 mA @ 125 V dc - 480V 250V 1/2 in 14 NPSM - - Conduit 86mm 44.5mm
N° de stock RS 808-2568
Référence fabricant914CE1-3
MarqueHoneywell
54,87 €
Each
Unité
Plunger SPDT NO/NC IP66, IP67, IP68 5 A Die Cast Zinc 250V 28V Cable Snap Action 914CE Wire Lead 40mm 16mm
N° de stock RS 808-2678
Référence fabricant914CE2-3A
MarqueHoneywell
79,99 €
Each
Unité
Roller Plunger SPDT NO/NC IP66, IP67, IP68 5 A Die Cast Zinc 250V 28V Cable Snap Action 914CE Wire Lead 40mm 16mm
N° de stock RS 447-3446
Référence fabricantXCKP2127P16
31,00 €
Each
Unité
Plunger DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm