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 539-319
Référence fabricant83106022
MarqueCrouzet
12,74 €
Each
Unité
Plunger SPDT NO/NC - 17.5 A Polyamide 250V - - - - Quick Connect 19mm 32mm
N° de stock RS 808-7636
Référence fabricantGLLA01A1B
MarqueHoneywell
18,42 €
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 447-3430
Référence fabricantXCKP2121P16
29,70 €
Each
Unité
Plunger DP NO/NC IP66, IP67 10 A Plastic 240V 250V Cable Snap Action OsiSense XC Screw Clamp 65mm 31mm
N° de stock RS 808-7648
Référence fabricantGLLA01A2B
MarqueHoneywell
15,60 €
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 753-0003
Référence fabricantD4MC-5020
MarqueOmron
33,91 €
Each
Unité
Roller Plunger SPDT NO/NC IP67 3 A ac, 250 mA dc - 480V 250V Screw Snap Action - Screw 70mm 47mm
N° de stock RS 808-2577
Référence fabricant914CE1-3A
MarqueHoneywell
61,97 €
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 894-3324
Référence fabricantNGCMB10AX01L
MarqueHoneywell
29,72 €
Each
Unité
Roller Plunger SPDT NO/NC IP67 6 A Metal 240V - M12 Positive Break, Snap Action NGC Cable 30mm 16.7mm
N° de stock RS 691-7216
Référence fabricantBZ-2RW84-A2
MarqueHoneywell
15,09 €
Each
Unité
Lever SPDT - - 15 A Plastic 125V - - Snap Action BZ Screw 28.19mm 1.94in
N° de stock RS 386-0423
Référence fabricantZ-15GW2BOMI
MarqueOmron
9,26 €
Each
Unité
Roller Lever SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 39.4mm 49.2mm
N° de stock RS 308-1816
Référence fabricantGLCB01C
MarqueHoneywell
45,75 €
Each
Unité
Roller 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 447-3474
Référence fabricantXCKD2102P16
35,10 €
Each
Unité
Plunger DP NO/NC - 3 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
N° de stock RS 360-8584
Référence fabricantZCKM1
27,90 €
Each
Unité
- DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 64mm 58.5mm
N° de stock RS 700-4169
Référence fabricantXCKP2106G11
30,90 €
Each
Unité
Coil Spring DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
N° de stock RS 684-2908
Référence fabricant3SE5112-0CH01
MarqueSiemens
54,99 €
Each
Unité
Roller Lever - NO/NC IP66, IP67 6 A @ 24 V Metal 400V 400V Snap-On Snap Action - Screw 119.5mm 37.3mm
N° de stock RS 873-2244
Référence fabricant440P-MSRS11B
49,11 €
Each
Unité
Spring Rod SPST NO/NC IP66 - Metal - - M20 - 440P - 211mm 40mm
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 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 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