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 822-5617
Référence fabricantZ-15GW22-B7-K
MarqueOmron
8,94 €
Each
Unité
Roller Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 29.4mm
N° de stock RS 360-8427
Référence fabricantZCKJ1H29
35,80 €
Each
Unité
- DP NO/NC IP65 10 A Metal 240V 250V - Snap Action OsiSense XC Screw 77mm 40mm
N° de stock RS 296-4669
Référence fabricantXCSPA592
39,10 €
Each
Unité
- - 1NC/1NO IP67 6 A Glass Fibre Reinforced PA 240V 250V Screw - Preventa XCSPA - 93.5mm 30mm
N° de stock RS 418-6063
Référence fabricantXCKS149
55,50 €
Each
Unité
Lever DP NO/NC IP65 3 A Plastic 240V 250V - Snap Action OsiSense XC Screw 72.5mm 40mm
N° de stock RS 478-1393
Référence fabricant266140 & LSM-11S
MarqueEaton
28,88 €
Each
Unité
Plunger - NO/NC IP66, IP67 6 A Metal 415V 220V Cage Clamp Quick Break LS-Titan Screw 76mm 33.5mm
N° de stock RS 700-4318
Référence fabricantXCKJ10559H29
65,50 €
Each
Unité
Lever SPDT NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 77mm 40mm
N° de stock RS 822-5658
Référence fabricantZE-Q22-2S
MarqueOmron
76,17 €
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 125-8467
Référence fabricantXCKVR54D1H29
145,00 €
Each
Unité
Crossed Rods Lever 4P 2NC IP65 10 A PBT+PC GF30 FR, Plastic 240V 125V Screw Clamp Slow Action OsiSense XC Screw 200mm 57mm
N° de stock RS 808-2735
Référence fabricant914CE3-3
MarqueHoneywell
76,21 €
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 447-3531
Référence fabricantXCKT2102P16
33,50 €
Each
Unité
Plunger DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 51mm 58mm
N° de stock RS 609-6631
Référence fabricantXCMD2102M12
67,70 €
Each
Unité
Plunger DP NO/NC IP66, IP67, IP68 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC M12 Connector 50mm 30mm
N° de stock RS 235-997
Référence fabricantXCKM121H29
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 808-7654
Référence fabricantGLLA01C
MarqueHoneywell
17,78 €
Each
Unité
Roller Plunger SPDT NO/NC IP66 10 A Plastic 300V 250V 1/2 in Conduit Snap Action GLL - 30.5mm 62mm
N° de stock RS 447-3812
Référence fabricantZCMD25
40,70 €
Each
Unité
- DP NO/NC IP66, IP67 1.5 A Zinc Alloy 240V 250V - Slow Action OsiSense XC Plug 50mm 30mm
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 344-3589
Référence fabricantSSCEB31B
MarqueHoneywell
79,25 €
Each
Unité
Plunger SPDT NO/NC IP68 4 A - 240V - - Snap Action SSCE Wire Lead 54mm 40mm
N° de stock RS 808-2568
Référence fabricant914CE1-3
MarqueHoneywell
57,06 €
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 822-5614
Référence fabricantZ-15GW2-B7-K
MarqueOmron
16,75 €
Each
Unité
Roller Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 29.4mm
N° de stock RS 814-7996
Référence fabricantXCMD2116C12
73,90 €
Each
Unité
Roller Lever DPST NO/NC IP66, IP67, IP68 4 A Zamak® Zinc Alloy 60V - M12 Snap Action OsiSense XC 5-Pin Connector 50mm 30mm
N° de stock RS 905-5141
Référence fabricantBNS026R
MarqueBALLUFF
408,37 €
Each
Unité
Plunger 2P NO/NC IP67 6 A Aluminium 250V - M20 Snap Action - Screw 79mm 36mm