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 1754 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. 447-3395
FabrikantnummerXCKP2118P16
30,00 €
Each
Aantal stuks
Lever DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
RS-stocknr. 447-3806
FabrikantnummerZCMD21
37,60 €
Each
Aantal stuks
- DP NO/NC - 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Plug 50mm 30mm
RS-stocknr. 334-993
Fabrikantnummer24CE31-Y1
FabrikantHoneywell
80,47 €
Each
Aantal stuks
Plunger SPST NC IP67 100 mA Die Cast Zinc 240V 250V - Slow Action - Wire Lead 49mm 40mm
RS-stocknr. 339-421
Fabrikantnummer14CE2-1
FabrikantHoneywell
77,19 €
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP66 5 A Die Cast Zinc 240V - - Snap Action 14CE Wire Lead 49mm 40mm
RS-stocknr. 235-953
FabrikantnummerXCKJ10541
55,58 €
Each
Aantal stuks
Lever SPDT NO/NC IP66 10 A Metal 600V 600V - Snap Action OsiSense XC Screw 77mm 40mm
RS-stocknr. 470-4403
FabrikantnummerZS 236-11Z
FabrikantSchmersal
26,09 €
Each
Aantal stuks
Plunger - NO/NC IP67 10 A Thermoplastic 230V 24V - Snap Action - Screw 61.5mm 30mm
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. 691-7257
FabrikantnummerLSA1A
FabrikantHoneywell
107,81 €
Each
Aantal stuks
Rotary Lever SPDT NO/NC IP67 10 A Die Cast Zinc 600V 250V - Snap Action HDLS Conduit 106.78mm 1.62in
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. 447-3840
FabrikantnummerXCMD2102L1
55,90 €
Each
Aantal stuks
Plunger DP NO/NC IP66, IP67, IP68 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 50mm 30mm
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. 283-583
FabrikantnummerXCMD21G1L1
81,30 €
Each
Aantal stuks
Plunger DP NO/NC IP66, IP67, IP68 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 50mm 30mm
RS-stocknr. 700-4188
FabrikantnummerZCT21P16
19,00 €
Each
Aantal stuks
- DP NO/NC IP66, IP67 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw - -
RS-stocknr. 230-1967
FabrikantnummerXCKM115
47,20 €
Each
Aantal stuks
Lever DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 64mm 63mm
RS-stocknr. 609-3840
FabrikantnummerZCMD21C12
65,00 €
Each
Aantal stuks
- DP NO/NC IP66, IP67 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC M12 Connector 59mm 30mm
RS-stocknr. 470-4396
FabrikantnummerTV1H 236-11z
FabrikantSchmersal
40,28 €
Each
Aantal stuks
Lever DPDT NO/NC IP67 4 A Thermoplastic 230V 24V - Slow Action - Screw 58.5mm 30mm
RS-stocknr. 308-1844
FabrikantnummerGLCB01A4J
FabrikantHoneywell
43,56 €
Each
Aantal stuks
Adjustable Lever 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
RS-stocknr. 843-1200
Fabrikantnummer095417 & AT4/11-1/I/R316
FabrikantEaton
77,48 €
Each
Aantal stuks
Rotary Lever - NO/NC IP65 10 A Plastic 415V 220V - Slow Action AT4 Screw - -
RS-stocknr. 894-3324
FabrikantnummerNGCMB10AX01L
FabrikantHoneywell
29,72 €
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP67 6 A Metal 240V - M12 Positive Break, Snap Action NGC Cable 30mm 16.7mm