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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Omschrijving Prijs 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
RS-stocknr. 776-8551
FabrikantnummerZ15GW22
FabrikantOmron
€ 11,72
Each
Aantal stuks
Roller Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V Solder Snap Action - PCB Pin 49.2mm 39.4mm
RS-stocknr. 621-1515
FabrikantnummerD4N-1120
FabrikantOmron
€ 17,59
Each
Aantal stuks
Roller Lever SPDT NO/NC IP67 - - - - Screw - D4N - 73mm 31mm
RS-stocknr. 808-2849
FabrikantnummerBZE7-2RN-PG
FabrikantHoneywell
€ 90,64
Each
Aantal stuks
Plunger SPDT NO/NC IP65 15 A Die Cast Aluminium 480V 250V Cable Snap Action BZE7 PG13.5 - -
RS-stocknr. 821-0202
Fabrikantnummer1CH28-12
FabrikantHoneywell
€ 310,80
Each
Aantal stuks
Plunger SPDT NO/NC - 4 A - - 28V Cable - - Cable - 1 (Dia.)in
RS-stocknr. 691-7210
FabrikantnummerBZ-2RW863-A2
FabrikantHoneywell
€ 17,47
Each
Aantal stuks
Lever SPDT - - 15 A Plastic 125V - - Snap Action BZ Screw 28.19mm 1.94in
RS-stocknr. 621-1521
FabrikantnummerD4N-112G
FabrikantOmron
€ 21,89
Each
Aantal stuks
Roller Lever SPDT NO/NC IP67 - - - - Screw - D4N - 73mm 31mm
RS-stocknr. 908-3284
FabrikantnummerWLNJ-G-N
FabrikantOmron
€ 70,10
Each
Aantal stuks
Coil Spring SPST NO/NC IP67 10 A - 500V 250V PG 13.5 Snap Action WL Screw 40mm 42mm
RS-stocknr. 753-0003
FabrikantnummerD4MC-5020
FabrikantOmron
€ 33,91
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP67 3 A ac, 250 mA dc - 480V 250V Screw Snap Action - Screw 70mm 47mm
RS-stocknr. 847-4973
Fabrikantnummer106729 & LS-S02
FabrikantEaton
€ 20,62
Each
Aantal stuks
- - 2NC IP66, IP67 3 A @ 24 V dc, 6 A @ 230/240 V ac - 415V 220V - - - Screw - -
RS-stocknr. 308-288
Fabrikantnummer266107 & LS-02
FabrikantEaton
€ 21,25
Each
Aantal stuks
Plunger - 2NC IP66, IP67 6 A Plastic 415V 220V Cage Clamp Standard Action LS-Titan Screw 76mm 33.5mm
RS-stocknr. 447-3402
FabrikantnummerXCKP2102P16
€ 28,50
Each
Aantal stuks
Plunger DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
RS-stocknr. 311-2358
FabrikantnummerGLAB01B
FabrikantHoneywell
€ 67,89
Each
Aantal stuks
Plunger SPDT NO/NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA PG13.5 Connector 145.8mm 42mm
RS-stocknr. 814-7936
FabrikantnummerXCKJ10541H7
€ 72,80
Each
Aantal stuks
Roller Lever - NO/NC IP66 - Zamak® Zinc Alloy - - 1/2 NPT Conduit Snap Action OsiSense XC Wire Lead 84mm 42.5mm
RS-stocknr. 700-4264
FabrikantnummerZCD39
€ 26,50
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Aantal stuks
- 3P NO/2NC - 750 mA Metal 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
RS-stocknr. 700-4267
FabrikantnummerXCKP2118G11
€ 30,60
Each
Aantal stuks
Lever DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
RS-stocknr. 776-8520
FabrikantnummerZ-15GQ
FabrikantOmron
€ 15,98
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Aantal stuks
Plunger SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V Solder Snap Action - PCB Pin 49.2mm 47.3mm
RS-stocknr. 539-315
Fabrikantnummer83731324
FabrikantCrouzet
€ 53,07
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Aantal stuks
Plunger SP NO/NC IP66 5 A - 250V - Cable - - Wire Lead 49.5mm 49mm
RS-stocknr. 386-0372
FabrikantnummerZ-15GQB
FabrikantOmron
€ 16,54
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 47.3mm 49.2mm
RS-stocknr. 808-7670
FabrikantnummerOPD-AR
FabrikantHoneywell
€ 210,95
Each
Aantal stuks
Rotary Lever DPDT - - 10 A Die Cast Aluminium 250V 250V 1/2 in NPT Conduit Snap Action - - 92.96mm 65.02mm
RS-stocknr. 905-5141
FabrikantnummerBNS026R
FabrikantBALLUFF
€ 408,37
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Aantal stuks
Plunger 2P NO/NC IP67 6 A Aluminium 250V - M20 Snap - Screw 79mm 36mm