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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กำลังดูสินค้า 1 - 20 รายการจาก 1519 รายการ / Viewing 1 - 20 of 1519 products
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รายละเอียดสินค้า / Description ราคา / 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 Stock No. 386-0417
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Z-15GW22B
Brand :Omron
THB540.76
Each
Units
Roller Lever SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 39.4mm 49.2mm
RS Stock No. 386-0423
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Z-15GW2BOMI
Brand :Omron
THB415.30
Each
Units
Roller Lever SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 39.4mm 49.2mm
RS Stock No. 386-0372
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Z-15GQB
Brand :Omron
THB711.76
Each
Units
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 47.3mm 49.2mm
RS Stock No. 360-8584
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ZCKM1
THB3,036.26
Each
Units
- DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 64mm 58.5mm
RS Stock No. 447-3806
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ZCMD21
THB2,476.07
Each
Units
- DP NO/NC - 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Plug 50mm 30mm
RS Stock No. 447-3575
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ZCP21
THB636.84
Each
Units
- DP NO/NC - 1.5 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
RS Stock No. 386-0366
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Z-15GQ22B
Brand :Omron
THB846.38
Each
Units
Plunger SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 58.9mm 49.2mm
RS Stock No. 447-3834
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XCMD2110L1
THB1,702.32
Each
Units
Plunger DP NO/NC IP66, IP67, IP68 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 50mm 30mm
RS Stock No. 776-8532
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Z-15GQ8B
Brand :Omron
THB647.35
Each
Units
Plunger SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V Screw Snap Action - Screw 49.2mm 58mm
RS Stock No. 821-0202
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1CH28-12
Brand :Honeywell
THB13,357.02
Each
Units
Plunger SPDT NO/NC - 4 A - - 28V Cable - - Cable - 1 (Dia.)in
RS Stock No. 808-2757
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.BZE6-2RN
Brand :Honeywell
THB2,150.09
Each
Units
Plunger SPDT NO/NC IP66 15 A Die Cast Zinc 600V 250V 1/2 NPT Snap Action BZE6 Screw 25.4mm 44.4mm
RS Stock No. 748-2926
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.SHL-Q2255
Brand :Omron
THB1,709.31
Each
Units
Roller Plunger SPDT NO/NC IP67 2 A ac, 200 mA dc - 480V 250V Screw Snap Action - Screw 73.5mm 35.9mm
RS Stock No. 418-5947
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XCRE18
THB7,457.26
Each
Units
Lever 4P 2NO/2NC IP54 3 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 95mm 85mm
RS Stock No. 418-6108
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.ZCKS1
THB2,284.02
Each
Units
- DP NO/NC IP65 10 A Plastic 240V 250V - Snap Action OsiSense XC Screw 72.5mm 40mm
RS Stock No. 776-8576
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Z-15HW78-B
Brand :Omron
THB496.71
Each
Units
Lever SPDT NO/NC IP00 15 A Thermosetting Resin 250V 250V Screw Snap Action - Screw 49.2mm 32.4mm
RS Stock No. 235-931
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XCKJ167H29
THB2,565.26
Each
Units
Plunger SPDT NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 77mm 40mm
RS Stock No. 447-3840
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.XCMD2102L1
THB7,017.49
Each
Units
Plunger DP NO/NC IP66, IP67, IP68 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 50mm 30mm
RS Stock No. 776-8560
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.Z-15GW-B
Brand :Omron
THB366.05
Each
Units
Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V Screw Snap Action - Screw 49.2mm 29.4mm
RS Stock No. 828-1014
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.WL-CA2GN
Brand :Omron
THB2,053.73
Each
Units
Roller Lever DPDT NO/NC IP67 2 A Aluminium Alloy, Stainless Steel 250V 48V G1/2 Conduit Double Break WL Screw 125mm 40mm
RS Stock No. 339-421
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.14CE2-1
Brand :Honeywell
THB2,604.89
Each
Units
Roller Plunger SPDT NO/NC IP66 5 A Die Cast Zinc 240V - - Snap Action 14CE Wire Lead 49mm 40mm