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. 684-2908
Fabrikantnummer3SE5112-0CH01
FabrikantSiemens
54,99 €
Each
Aantal stuks
Roller Lever - NO/NC IP66, IP67 6 A @ 24 V Metal 400V 400V Snap-On Snap Action - Screw 119.5mm 37.3mm
RS-stocknr. 749-7593
Fabrikantnummer3SE5112-0CR01
FabrikantSiemens
48,60 €
Each
Aantal stuks
Spring Rod DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 40.5mm
RS-stocknr. 749-7631
Fabrikantnummer3SE5122-0CE01
FabrikantSiemens
48,96 €
Each
Aantal stuks
Roller Lever DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 56mm
RS-stocknr. 768-6241
Fabrikantnummer3SE5232-0LC05
FabrikantSiemens
21,87 €
Each
Aantal stuks
Round Plunger - NO/2NC - - Plastic - - Screw - 3SE5 - 31mm 33mm
RS-stocknr. 768-6298
Fabrikantnummer3SE5232-0PC05
FabrikantSiemens
21,87 €
Each
Aantal stuks
Round Plunger - 2NO/NC - - Plastic - - Screw - 3SE5 - 31mm 33mm
RS-stocknr. 769-6276
Fabrikantnummer3SE5132-0CE05
FabrikantSiemens
37,80 €
Each
Aantal stuks
Roller Lever - NO/NC - - Plastic - - Screw - 3SE5 - 40.5mm 37.3mm
RS-stocknr. 749-7701
Fabrikantnummer3SE5423-0CC20-1EA2
FabrikantSiemens
60,57 €
Each
Aantal stuks
Plunger DPST NO/NC IP67 - Metal - - M12 - 3SE5 - 50mm 40mm
RS-stocknr. 227-977
Fabrikantnummer3SE5232-0HC05
FabrikantSiemens
19,98 €
Each
Aantal stuks
Plunger - NO/NC IP65 - Plastic - - Screw - 3SE5 - 75.7mm 31mm
RS-stocknr. 749-7577
Fabrikantnummer3SE5112-0BH01
FabrikantSiemens
56,16 €
Each
Aantal stuks
Twist Lever DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 40.5mm
RS-stocknr. 749-7580
Fabrikantnummer3SE5112-0CC02
FabrikantSiemens
51,12 €
Each
Aantal stuks
Plunger DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 40.5mm
RS-stocknr. 749-7678
Fabrikantnummer3SE5232-0HR01
FabrikantSiemens
37,62 €
Each
Aantal stuks
Spring Rod DPST NO/NC IP65 - Plastic - - Screw - 3SE5 - 75.7mm 31mm
RS-stocknr. 768-6588
Fabrikantnummer3SE5122-0LA00-1AJ0
FabrikantSiemens
46,35 €
Each
Aantal stuks
Round Plunger - NO/NC - - Metal - - Screw - 3SE5 - 31mm 33mm
RS-stocknr. 749-7583
Fabrikantnummer3SE5112-0CD02
FabrikantSiemens
57,06 €
Each
Aantal stuks
Plunger DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 40.5mm
RS-stocknr. 749-7625
Fabrikantnummer3SE5122-0CB01
FabrikantSiemens
38,52 €
Each
Aantal stuks
Plunger DPST NO/NC IP66, IP67 - Metal - - Screw - 3SE5 - 85.7mm 56mm
RS-stocknr. 749-7638
Fabrikantnummer3SE5122-0CH80
FabrikantSiemens
61,83 €
Each
Aantal stuks
Rod DPST NO/NC IP65, IP67 - Metal - - Screw - 3SE5 - 85.7mm 56mm
RS-stocknr. 749-7666
Fabrikantnummer3SE5232-0HK21
FabrikantSiemens
30,24 €
Each
Aantal stuks
Twist Lever DPST NO/NC IP65 - Plastic - - Screw - 3SE5 - 75.7mm 31mm
RS-stocknr. 755-7900
Fabrikantnummer3SE5423-0CD20-1EB1
FabrikantSiemens
64,17 €
Each
Aantal stuks
Roller Plunger DPST NC/NO - - - - - M12 Screw - 3SE5 - 50mm 40mm
RS-stocknr. 755-7869
Fabrikantnummer3SE5413-0CD20-1EB1
FabrikantSiemens
55,62 €
Each
Aantal stuks
Roller Plunger DPST NO/NC - - - - - M12 - 3SE5 - 50mm 30mm
Nieuw
RS-stocknr. 213-0797
Fabrikantnummer3SE5322-0SG21
FabrikantSiemens
355,00 €
Each
Aantal stuks
- - 2NC/1NO - - Plastic - - - - 3SE5 - - -
RS-stocknr. 768-6456
Fabrikantnummer3SE5214-0LC05-1AE1
FabrikantSiemens
50,13 €
Each
Aantal stuks
Round Plunger - 2NC - - Metal - - Screw - 3SE5 - 31mm 33mm