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. 776-8539
FabrikantnummerZ15GQ22
FabrikantOmron
19,63 €
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V Solder Snap Action - PCB Pin 49.2mm 58.9mm
RS-stocknr. 386-0366
FabrikantnummerZ15GQ22B
FabrikantOmron
19,96 €
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 58.9mm 49.2mm
RS-stocknr. 386-0417
FabrikantnummerZ15GW22B
FabrikantOmron
11,64 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 39.4mm 49.2mm
RS-stocknr. 753-0003
FabrikantnummerD4MC-5020
FabrikantOmron
33,07 €
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. 386-0423
FabrikantnummerZ15GW2BOMI
FabrikantOmron
11,64 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 39.4mm 49.2mm
RS-stocknr. 435-0371
FabrikantnummerZE-Q-2G
FabrikantOmron
48,86 €
Each
Aantal stuks
Plunger SPDT NO/NC IP65 15 A - 480V 250V - Snap Action - Screw 63.7mm 86mm
RS-stocknr. 822-5658
FabrikantnummerZE-Q22-2S
FabrikantOmron
49,82 €
Each
Aantal stuks
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
RS-stocknr. 822-5617
FabrikantnummerZ-15GW22-B7-K
FabrikantOmron
11,32 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 29.4mm
RS-stocknr. 436-0182
FabrikantnummerZ-15GQ21-B
FabrikantOmron
21,03 €
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 58.9mm 49.2mm
RS-stocknr. 822-5614
FabrikantnummerZ-15GW2-B7-K
FabrikantOmron
20,56 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 29.4mm
RS-stocknr. 827-9099
FabrikantnummerA-20GV-B
FabrikantOmron
17,86 €
Each
Aantal stuks
Lever SPDT NO/NC IP00 20 A - 500V 250V Screw Snap Action - Screw 49.2mm 17.45mm
RS-stocknr. 776-8554
FabrikantnummerZ-15GW2255-B
FabrikantOmron
17,18 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP62 15 A Thermosetting Resin 500V 250V Screw Snap Action - Screw 49.2mm 39.4mm
RS-stocknr. 386-0372
FabrikantnummerZ15GQB
FabrikantOmron
16,12 €
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 47.3mm 49.2mm
RS-stocknr. 822-5623
FabrikantnummerZ-15GW4-B7-K
FabrikantOmron
8,79 €
Each
Aantal stuks
Lever SPDT NO/NC IP00 15 A - 500V 250V M4 Snap Action - Screw 49.2mm 29.4mm
RS-stocknr. 753-0012
FabrikantnummerD4E-1A20N
FabrikantOmron
72,45 €
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP67 5 A - 125V - Screw Snap Action - Screw 57mm 32.9mm
RS-stocknr. 822-5588
FabrikantnummerZ-15G-B7-K
FabrikantOmron
6,25 €
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 24.2mm
RS-stocknr. 435-0321
FabrikantnummerZC-Q55
FabrikantOmron
42,72 €
Each
Aantal stuks
Plunger SPDT NO/NC IP67 10 A - 250V 250V - Snap Action - Screw 60.2mm 70mm
RS-stocknr. 776-8567
FabrikantnummerZ-15GW4-B
FabrikantOmron
11,32 €
Each
Aantal stuks
Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V Screw Snap Action - Screw 49.2mm 29.4mm
RS-stocknr. 828-1014
FabrikantnummerWL-CA2GN
FabrikantOmron
93,50 €
Each
Aantal stuks
Roller Lever DPDT NO/NC IP67 2 A Aluminium Alloy, Stainless Steel 250V 48V G1/2 Conduit Double Break WL Screw 125mm 40mm
RS-stocknr. 822-5585
FabrikantnummerZ-15GD-B7-K
FabrikantOmron
7,11 €
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 24.2mm