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 296-4669
Référence fabricantXCSPA592
39,10 €
Each
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- - 1NC/1NO IP67 6 A Glass Fibre Reinforced PA 240V 250V Screw - XCSPA - 93.5mm 30mm
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 Break OsiSense XC Screw 200mm 57mm
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 Snap Action LS-Titan Screw 76mm 33.5mm
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 609-6675
Référence fabricantXCRF17
213,00 €
Each
Unité
Lever 4P 2NO/2NC IP54 3 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 95mm 85mm
N° de stock RS 808-7642
Référence fabricantGLLA01A2Y
MarqueHoneywell
22,28 €
Each
Unité
Rotary Lever SPDT NO/NC IP66 10 A Plastic 300V 250V 1/2 in Conduit Snap Action GLL - 30.5mm 62mm
N° de stock RS 621-1537
Référence fabricantD4N-1131
MarqueOmron
15,76 €
Each
Unité
Plunger SPDT NO/NC IP67 - - - - Screw - D4N - 73.2mm 31mm
N° de stock RS 125-8484
Référence fabricantZCMD29
42,30 €
Each
Unité
- DP 2NC - 6 A Zamak 240V 250V Plug In Snap Action OsiSense XC Plug In 30mm 16mm
N° de stock RS 308-294
Référence fabricant266114 & LS-11D
MarqueEaton
21,36 €
Each
Unité
Plunger - NO/NC IP66, IP67 6 A Plastic 415V 220V Cage Clamp Standard Action LS-Titan Screw 76mm 33.5mm
N° de stock RS 766-1700
Référence fabricantXCSM3902L1
78,10 €
Each
Unité
Roller Plunger 3P NO/2NC - - Metal - - Cable - XCSM - 70mm 30mm
N° de stock RS 235-925
Référence fabricantXCKJ161
53,20 €
Each
Unité
Plunger SPDT NO/NC IP66 10 A Metal 600V 600V - Snap Action OsiSense XC Screw 77mm 40mm
N° de stock RS 246-3087
Référence fabricant14CE2-3
MarqueHoneywell
76,64 €
Each
Unité
Roller Plunger SPDT NO/NC IP66 5 A Die Cast Zinc 240V - - Snap Action 14CE Wire Lead 49mm 40mm
N° de stock RS 344-3595
Référence fabricantSSCEB31C
MarqueHoneywell
90,35 €
Each
Unité
Plunger SPDT NO/NC IP68 4 A Die Cast Zinc 240V - - Snap Action SSCE Wire Lead 67mm 40mm
N° de stock RS 410-6988
Référence fabricantC2-U1Z R
MarqueBernstein AG
16,74 €
Each
Unité
Roller Tappet - NO/NC IP20 - Fibreglass - - Screw - C2 - 44mm 26mm
N° de stock RS 700-4305
Référence fabricantXCKJ10511H29
61,80 €
Each
Unité
Lever SPDT NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 77mm 40mm
N° de stock RS 186-8469
Référence fabricantGLEB01A2B
MarqueHoneywell
56,83 €
Each
Unité
Rotary Lever SPDT NO/NC IP67 6 A Die Cast Zinc 300V 250V - Snap Action GLE PG13.5 Connector 139mm 65mm
N° de stock RS 308-1793
Référence fabricantGLCB01B
MarqueHoneywell
41,44 €
Each
Unité
Plunger SPDT 1NO/1NC NO/NC IP66 10 A Die Cast Zinc 300V 300V Internal Screw Terminal Contact Block Snap Action GLC PG13.5 Conduit 68.5mm 30.5mm
N° de stock RS 621-1515
Référence fabricantD4N-1120
MarqueOmron
17,59 €
Each
Unité
Roller Lever SPDT NO/NC IP67 - - - - Screw - D4N - 73mm 31mm
N° de stock RS 700-4210
Référence fabricantZCKM5
27,60 €
Each
Unité
- DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Slow Action OsiSense XC Wire Lead 64mm 58.5mm
N° de stock RS 447-3402
Référence fabricantXCKP2102P16
28,50 €
Each
Unité
Plunger DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm