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. 854-1625
Fabrikantnummer21CH38-18
FabrikantHoneywell
€ 489,27
Each
Aantal stuks
Roller Lever SPST - - 4 A - - 28V - - - Wire Lead - -
RS-stocknr. 822-5601
FabrikantnummerZ-15GQ22-B7-K
FabrikantOmron
€ 13,13
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP00 15 A - 500V 250V M4 Snap Action - Screw 49.2mm 25.5mm
RS-stocknr. 308-1894
FabrikantnummerGLDB01E7B
FabrikantHoneywell
€ 40,80
Each
Aantal stuks
Coil Spring SPDT 1NO/1NC NO/NC IP66 10 A Plastic, Polyester 300V 300V Internal Screw Terminal Contact Block Snap Action GLD PG13.5 Conduit 68.5mm 30.5mm
RS-stocknr. 822-5591
FabrikantnummerZ-15GQ22A55-B5V
FabrikantOmron
€ 40,81
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP62 15 A - 500V 250V M4 Snap Action - Screw 81.6mm 35.5mm
RS-stocknr. 311-2415
FabrikantnummerGLAB01A2B
FabrikantHoneywell
€ 90,07
Each
Aantal stuks
Rotary Lever SPDT NO/NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA PG13.5 Connector 145.8mm 42mm
RS-stocknr. 609-3755
FabrikantnummerZCKJ404
€ 102,00
Each
Aantal stuks
- DP 2NO/2NC IP65 10 A Metal 240V 250V - Snap Action OsiSense XC Screw 77mm 40mm
RS-stocknr. 808-2757
FabrikantnummerBZE6-2RN
FabrikantHoneywell
€ 48,97
Each
Aantal stuks
Plunger SPDT NO/NC IP66 15 A Die Cast Zinc 600V 250V 1/2 NPT Snap Action BZE6 Screw 25.4mm 44.4mm
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. 447-3878
FabrikantnummerXCMD2115L1
€ 59,50
Each
Aantal stuks
Lever DP NO/NC IP66, IP67, IP68 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 50mm 30mm
RS-stocknr. 808-7698
FabrikantnummerSL1-EK
FabrikantHoneywell
€ 142,76
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP67 100 mA Die Cast Zinc 125V 30V Cable Snap Action SL1 Screw 18mm 59.8mm
RS-stocknr. 822-5626
FabrikantnummerZ-15GW-B7-K
FabrikantOmron
€ 12,59
Each
Aantal stuks
Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 29.4mm
RS-stocknr. 828-1014
FabrikantnummerWL-CA2GN
FabrikantOmron
€ 95,90
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. 186-8251
FabrikantnummerGLAC01A2B
FabrikantHoneywell
€ 97,85
Each
Aantal stuks
Rotary Lever SPDT NO/NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA 20 mm Conduit 145.8mm 42mm
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. 125-8465
FabrikantnummerXCKN2145P20
€ 29,20
Each
Aantal stuks
Spring Return Roller Lever DP NO/NC IP65 10 A Plastic 240V 250V Screw Clamp Snap Action OsiSense XC Screw 30mm 42.3mm
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. 808-7474
FabrikantnummerBXA3K
FabrikantHoneywell
€ 232,47
Each
Aantal stuks
Rotary Lever SPDT NO/NC IP67 10 A Stainless Steel 600V 250V 1/2 in NPT Conduit Snap Action BX - 156.62mm 52.32mm
RS-stocknr. 344-3618
FabrikantnummerSSCEB31A1B
FabrikantHoneywell
€ 110,66
Each
Aantal stuks
Rotary Lever SPDT NO/NC IP68 4 A Die Cast Zinc 240V - - Snap Action SSCE Wire Lead 65.1mm 16mm
RS-stocknr. 308-238
Fabrikantnummer266121 & LSE-11
FabrikantEaton
€ 43,66
Each
Aantal stuks
Plunger - NO/NC IP66, IP67 200 mA Plastic - 30V Cage Clamp Standard Action LS-Titan Screw 76mm 33.5mm
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