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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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 Stock No. 447-3806
Mfr. Part No.ZCMD21
TWD972.00
Each
units
- DP NO/NC - 1.5 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Plug 50mm 30mm
RS Stock No. 386-0417
Mfr. Part No.Z15GW22B
BrandOmron
TWD355.00
Each
units
Roller Lever SPDT NO/NC IP00 15 A - 500V 250V - Snap Action - Screw 39.4mm 49.2mm
RS Stock No. 808-2902
Mfr. Part No.LSA4L
BrandHoneywell
TWD4,507.00
Each
units
Rotary Lever DPDT 2NO/2NC IP65, IP66, IP67 10 A Die Cast Zinc 600V 250V 3/4 in NPT Conduit Snap Action HDLS Screw 47.8mm 45.3mm
RS Stock No. 293-7033
Mfr. Part No.3LS1-4C
BrandHoneywell
TWD6,573.00
Each
units
Plunger SPDT NO/NC IP67 10 A Die Cast Zinc 480V 550V - Snap Action - Conduit - -
RS Stock No. 776-8508
Mfr. Part No.Z15G55
BrandOmron
TWD421.00
Each
units
Plunger SPDT NO/NC IP62 15 A Thermosetting Resin 500V 250V Solder Snap Action - PCB Pin 49.2mm 25.1mm
RS Stock No. 447-3575
Mfr. Part No.ZCP21
TWD418.00
Each
units
- DP NO/NC - 1.5 A Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
RS Stock No. 700-4286
Mfr. Part No.ZCP39
TWD793.00
Each
units
- 3P NO/2NC - 750 mA Plastic 240V 250V - Snap Action OsiSense XC Screw 65mm 31mm
RS Stock No. 808-2814
Mfr. Part No.BZE6-2RQ8
BrandHoneywell
TWD1,930.00
Each
units
Plunger SPDT NO/NC IP40 15 A Die Cast Zinc 600V 250V 1/2 NPT Snap Action BZE6 Screw 25.4mm 44.4mm
RS Stock No. 237-2571
Mfr. Part No.14CE101-1
BrandHoneywell
TWD4,361.00
Each
units
Plunger SPDT NO/NC IP65 5 A Die Cast Zinc 240V 250V - Snap Action 14CE Wire Lead 49mm 40mm
RS Stock No. 360-8562
Mfr. Part No.ZCKM1H29
TWD715.00
Each
units
- DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Wire Lead 64mm 58.5mm
RS Stock No. 447-3840
Mfr. Part No.XCMD2102L1
TWD1,249.00
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. 470-4403
Mfr. Part No.ZS 236-11Z
BrandSchmersal
TWD784.00
Each
units
Plunger - NO/NC IP67 10 A Thermoplastic 230V 24V - Snap Action - Screw 61.5mm 30mm
RS Stock No. 125-8474
Mfr. Part No.XCMN2121L1
TWD1,008.00
Each
units
Spring Return Roller Lever Plunger DP NO/NC IP65 6 A Plastic 240V 250V Fixed Cable Snap Action OsiSense XC Fixed Cable 30mm 16mm
RS Stock No. 386-1397
Mfr. Part No.HL-5030
BrandOmron
TWD1,316.00
Each
units
Adjustable Roller Lever SPST NO/NC IP65 5 A - 250V 250V - Snap Action - Screw 101mm -
RS Stock No. 843-1222
Mfr. Part No.AT4/11-S/I/F
BrandEaton
TWD4,118.00
Each
units
Coil Spring - NO/NC IP65 10 A Plastic 415V 220V - Quick Break AT4 Screw - -
RS Stock No. 808-7664
Mfr. Part No.OP-AR
BrandHoneywell
TWD4,866.00
Each
units
Rotary Lever SPDT NO/NC - 15 A Die Cast Aluminium 480V 250V 1/2 in NPT Conduit Snap Action - - 92.96mm 65.02mm
RS Stock No. 186-8497
Mfr. Part No.GLFC01A1B
BrandHoneywell
TWD3,349.00
Each
units
Rotary Lever SPDT NO/NC IP67 10 A Die Cast Zinc 250V 250V - Snap Action GLF 20 mm Conduit 145.8mm 42mm
RS Stock No. 311-2459
Mfr. Part No.GLAB20A1B
BrandHoneywell
TWD3,190.00
Each
units
Rotary Lever DPDT 2NO/2NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA PG13.5 Connector 145.8mm 42mm
RS Stock No. 230-1951
Mfr. Part No.XCKM121
TWD1,391.00
Each
units
Plunger DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 64mm 63mm
RS Stock No. 821-0454
Mfr. Part No.GLZ1AC
BrandHoneywell
TWD1,212.00
Each
units
Roller Plunger - - - - - - - - - GLZ - - -