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.

...
Lees meer Lees minder

Filters

1 - 20 van 159 producten worden weergegeven
Resultaten per pagina
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. 386-0366
FabrikantnummerZ-15GQ22B
FabrikantOmron
20,47 €
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 58.9mm 49.2mm
RS-stocknr. 776-8539
FabrikantnummerZ-15GQ22
FabrikantOmron
20,13 €
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. 386-0417
FabrikantnummerZ-15GW22B
FabrikantOmron
11,94 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 39.4mm 49.2mm
RS-stocknr. 757-9156
FabrikantnummerD4B-4171N
FabrikantOmron
51,66 €
Each
Aantal stuks
Roller Plunger DPST NO/NC - - Metal - - Screw - D4B-N - 97mm 40mm
RS-stocknr. 757-9231
FabrikantnummerD4NS-1BF
FabrikantOmron
23,01 €
Each
Aantal stuks
- - 2NC IP67 10 A Plastic 240V 250V Screw - D4NS - 96mm 31mm
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. 386-0423
FabrikantnummerZ-15GW2BOMI
FabrikantOmron
9,26 €
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
50,10 €
Each
Aantal stuks
Plunger SPDT NO/NC IP65 15 A - 480V 250V - Snap Action - Screw 63.7mm 86mm
RS-stocknr. 621-1521
FabrikantnummerD4N-112G
FabrikantOmron
21,89 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP67 - - - - Screw - D4N - 73mm 31mm
RS-stocknr. 621-1543
FabrikantnummerD4N-1132
FabrikantOmron
15,76 €
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP67 - - - - Screw - D4N - 83.6mm 31mm
RS-stocknr. 757-9216
FabrikantnummerD4NL-1AFG-B
FabrikantOmron
134,34 €
Each
Aantal stuks
Various Options - 1NC/1NO + 1NC/1NO IP67 - Plastic - - - Slow Action D4NL PG13.5 95mm 88.5mm
RS-stocknr. 822-5658
FabrikantnummerZE-Q22-2S
FabrikantOmron
73,24 €
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
8,94 €
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. 836-2731
FabrikantnummerD4B4A11N
FabrikantOmron
56,85 €
Each
Aantal stuks
Roller Lever - 2NC IP67 - Metal - - Screw - D4B - 40mm 62mm
RS-stocknr. 822-5614
FabrikantnummerZ-15GW2-B7-K
FabrikantOmron
16,75 €
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
21,57 €
Each
Aantal stuks
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 58.9mm 49.2mm
RS-stocknr. 621-1537
FabrikantnummerD4N-1131
FabrikantOmron
15,76 €
Each
Aantal stuks
Plunger SPDT NO/NC IP67 - - - - Screw - D4N - 73.2mm 31mm
RS-stocknr. 827-9099
FabrikantnummerA-20GV-B
FabrikantOmron
23,11 €
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
17,62 €
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. 621-1515
FabrikantnummerD4N-1120
FabrikantOmron
17,59 €
Each
Aantal stuks
Roller Lever SPDT NO/NC IP67 - - - - Screw - D4N - 73mm 31mm