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

1521 - 1540 van 1669 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. 827-9172
FabrikantnummerD4C-1231
FabrikantOmron
€ 96,95
Each
Aantal stuks
Plunger SPDT NO/NC IP67 4 A @ 30 V dc, 5 A @ 250 V ac - 250V 250V Screw Snap Action - Screw 49mm 40mm
Nieuw
RS-stocknr. 211-0146
Fabrikantnummer3SE5212-0CC05-1AJ0
FabrikantSiemens
€ 48,70
Each
Aantal stuks
Rounded plunger - 1NO/1NC IP66, IP67 4 A Metal 400V - - - - - - -
Nieuw
RS-stocknr. 213-0797
Fabrikantnummer3SE5322-0SG21
FabrikantSiemens
€ 355,00
Each
Aantal stuks
- - 2NC/1NO - - Plastic - - - - 3SE5 - - -
RS-stocknr. 311-2443
FabrikantnummerGLAB20C
FabrikantHoneywell
€ 93,87
Each
Aantal stuks
Plunger DPDT 2NO/2NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA PG13.5 Connector 145.8mm 42mm
Nieuw
RS-stocknr. 221-1880
FabrikantnummerXCKD2101P16
€ 33,70
Each
Aantal stuks
Rotary DP 1 NC + 1 NO IP66, IP67 10 A Metal 500V - - Snap Action - - - -
Nieuw
RS-stocknr. 221-1894
FabrikantnummerXCKJ110513H29
€ 124,60
Each
Aantal stuks
Roller lever SP 1 C/O IP66 10 A Metal 500V - - Snap Action - - - -
RS-stocknr. 478-3563
FabrikantnummerLS4M2D
FabrikantHoneywell
€ 157,63
Each
Aantal stuks
Rotary Lever DPDT 2NO/2NC - 10 A Die Cast Zinc 600V 250V - Snap Action HDLS 20 mm Conduit - -
RS-stocknr. 195-1744
FabrikantnummerZCMD21L10
€ 75,58
Each
Aantal stuks
- 2P 1NC/1NO - - Zamak - - Cable Snap Action ZCMD - 58mm 30mm
RS-stocknr. 202-1645
Fabrikantnummer3SE5112-0LH11-1AJ0
FabrikantSiemens
€ 88,50
Each
Aantal stuks
Roller - 1NO/2NC IP66/IP67 - Metal - - - - - - - -
RS-stocknr. 808-2671
Fabrikantnummer914CE2-3L1
FabrikantHoneywell
€ 83,34
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP66, IP67, IP68 5 A Die Cast Zinc 240V - Cable Snap Action 14CE, 914CE Wire Lead 40mm 16mm
RS-stocknr. 203-3961
Fabrikantnummer3SE5122-0CR01
FabrikantSiemens
€ 55,10
Each
Aantal stuks
Spring Rod - 1 NO/1 NC IP65/IP67 6 A Metal 400V - - Snap Action - - - -
RS-stocknr. 776-8576
FabrikantnummerZ-15HW78-B
FabrikantOmron
€ 16,54
Each
Aantal stuks
Lever SPDT NO/NC IP00 15 A Thermosetting Resin 250V 250V Screw Snap Action - Screw 49.2mm 32.4mm
RS-stocknr. 894-3387
FabrikantnummerNGCMB50AX32C
FabrikantHoneywell
€ 55,14
Each
Aantal stuks
Roller Plunger DPDT 2NO/2NC IP67 10 mA Metal - 0.03V M12 Positive Break, Snap Action NGC Cable 30mm 16.7mm
RS-stocknr. 902-6907
FabrikantRS PRO
€ 27,95
Each
Aantal stuks
Adjustable Lever DPST NO/NC IP66 10 A Zinc Alloy 400V 250V Cable Snap Action - Screw 30.3mm 186mm
Nieuw
RS-stocknr. 221-1882
FabrikantnummerXCKD2128P16
€ 47,60
Each
Aantal stuks
Roller lever DP 1 NC + 1 NO IP66, IP67 10 A Metal 500V - - - - - - -
Nieuw
RS-stocknr. 221-1929
FabrikantnummerXR2AA02K20
€ 1.683,50
Each
Aantal stuks
Drive shaft SP 2 C/O IP54 10 A Aluminium alloy 240V - - Snap Action - - - -
RS-stocknr. 195-1717
FabrikantnummerXCRA12
€ 277,28
Each
Aantal stuks
Roller Lever DPST 2NC/2NO IP54 3 A Zinc Alloy 240V 250V PG 13.5 Snap Action XCR Screw 85mm 75mm
RS-stocknr. 902-6953
FabrikantRS PRO
€ 30,67
Each
Aantal stuks
Adjustable Lever DPST NO/NC IP67 5 A Thermoplastic 240V 250V Cable Snap Action - Wire Lead 31.5mm 158mm
RS-stocknr. 189-5272
Fabrikantnummer6088185022
FabrikantBernstein AG
€ 40,29
Each
Aantal stuks
Lever, Roller DPST NC/NO IP65 10 A Glass Fibre Reinforced Thermoplastic 240V - Screw Slow Action, Snap Action TI2 - 30mm -
RS-stocknr. 808-2741
Fabrikantnummer914CE3-9
FabrikantHoneywell
€ 86,17
Each
Aantal stuks
Roller Plunger SPDT NO/NC IP66, IP67, IP68 5 A Die Cast Zinc 250V 28V Cable Snap Action 14CE, 914CE Wire Lead 40mm 16mm