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.

...
顯示內容 隱藏內容

篩選條件

正在檢視 1 - 20,共 56 項產品
Results per page
Description Price 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庫存編號 539-319
製造零件編號83106022
BrandCrouzet
HK$207.80
單位
Plunger SPDT NO/NC - 17.5 A Polyamide 250V - - - - Quick Connect 19mm 32mm
RS庫存編號 539-286
製造零件編號83870101
BrandCrouzet
HK$411.06
單位
Plunger - NO/NC IP66, IP67 6 A Metal 240V 125V Cable Snap Action - - 69.9mm 30mm
RS庫存編號 323-9318
製造零件編號83843701
BrandCrouzet
HK$1,216.97
單位
- - - - - - - - - - - - - -
RS庫存編號 323-9324
製造零件編號83845701
BrandCrouzet
HK$991.06
單位
- - - - - - - - - - - - - -
RS庫存編號 539-292
製造零件編號83581101
BrandCrouzet
HK$340.10
單位
Plunger SP NO/NC IP67 8 A - 250V - Cable - - Wire Lead 53.9mm 31mm
RS庫存編號 539-303
製造零件編號83872101
BrandCrouzet
HK$525.73
單位
Plunger - NO/NC IP66, IP67 6 A Metal 240V 125V Cable Snap Action - - 85mm 30mm
RS庫存編號 323-9330
製造零件編號79210997
BrandCrouzet
HK$41.69
單位
- - - - - - - - - - - - - -
RS庫存編號 539-230
製造零件編號83118007
BrandCrouzet
HK$508.70
單位
Lever SP NO/NC - 17.5 A Plastic 250V - Screw - - - 29.4mm 43mm
RS庫存編號 539-268
製造零件編號83228001
BrandCrouzet
HK$586.26
單位
Plunger SP NO/NC - 10 A Polyamide 250V - Solder Pin - - - 7.5mm -
RS庫存編號 539-296
製造零件編號83733327
BrandCrouzet
HK$475.93
單位
Plunger SP NO/NC IP56 5 A - 250V - Cable - - Wire Lead 36mm 49mm
RS庫存編號 539-343
製造零件編號83871101
BrandCrouzet
HK$439.11
單位
Plunger - NO/NC IP66, IP67 6 A Metal 240V 125V Cable Snap Action - - 69.9mm 30mm
RS庫存編號 539-218
製造零件編號83873101
BrandCrouzet
HK$475.79
單位
Lever - NO/NC IP66, IP67 6 A Metal 240V 125V Cable Snap Action - - 76.6mm 30mm
RS庫存編號 539-264
製造零件編號83589801
BrandCrouzet
HK$427.87
單位
Plunger SP NO/NC IP66, IP67 5 A Thermoplastic 250V 24V - - - - 70mm 25mm
RS庫存編號 539-347
製造零件編號83151012
BrandCrouzet
HK$1,702.86
單位
Plunger SP NO/NC - - - - - - - - Solder Tag - -
RS庫存編號 539-258
製造零件編號83229001
BrandCrouzet
HK$652.55
單位
Plunger SP NO/NC - 10 A Polyamide 250V - Solder Pin - - - 13.15mm -
RS庫存編號 539-208
製造零件編號83732329
BrandCrouzet
HK$562.81
單位
Plunger SP NO/NC IP56 5 A - 250V - Cable - - Wire Lead 49.5mm 49mm
RS庫存編號 323-9302
製造零件編號83841701
BrandCrouzet
HK$673.88
單位
- - - - - - - - - - - - - -
RS庫存編號 539-214
製造零件編號83874101
BrandCrouzet
HK$379.50
單位
Plunger - NO/NC IP66, IP67 6 A Metal 240V 125V Cable Snap Action - - 74.8mm 30mm
RS庫存編號 323-9239
製造零件編號83 581 001
BrandCrouzet
HK$382.17
單位
- - - - - - - - - - - - - -
RS庫存編號 539-321
製造零件編號83874301
BrandCrouzet
HK$558.92
單位
Plunger - NO/NC IP66, IP67 100 mA Metal 30V 30V Cable Snap Action - - 49mm 30mm