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 MakeupLimit 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 TypesLimit 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. 748-2897
Mfr. Part No.D4C-1202
BrandOmron
HK$885.67
Each
units
Roller Plunger SPDT NO/NC IP67 4 A dc, 5 A ac Metal 250V 30V Screw Snap Action - Screw 51.5mm 40mm
RS Stock No. 235-981
Mfr. Part No.XCKM102H29
HK$973.27
Each
units
Roller Plunger DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Snap Action OsiSense XC Screw 64mm 63mm
RS Stock No. 814-8074
Mfr. Part No.9007C54F
HK$2,104.96
Each
units
Coil Spring SPDT NO/NC IP67 10 A Zamak® Zinc Alloy 600V - 1/2-14 NPT Conduit Snap Action 9007 Wire Lead 102mm 39mm
RS Stock No. 480-9110
Mfr. Part No.AZ8104CEJ
BrandPanasonic
HK$210.95
Each
units
Roller Lever DPST NO/NC IP64 5 A - 250V 125V - - AZ8 Screw 96.5mm 28mm
RS Stock No. 422-9463
Mfr. Part No.9007TUB4M11
HK$1,647.36
Each
units
Lever SPDT NO/NC IP66 150 A Die Cast Zinc 600V 600V - Snap Action 9007 Conduit 61.98mm 59mm
RS Stock No. 700-4210
Mfr. Part No.ZCKM5
HK$631.51
Each
units
- DP NO/NC IP66 10 A Zinc Alloy 240V 250V - Slow Action OsiSense XC Wire Lead 64mm 58.5mm
RS Stock No. 360-8433
Mfr. Part No.ZCKJ11H29
HK$1,120.45
Each
units
- SP NO/NC IP65 10 A Metal 240V 250V - Snap Action OsiSense XC Screw 88.5mm 36mm
RS Stock No. 821-0441
Mfr. Part No.GLCB01A2B
BrandHoneywell
HK$368.14
Each
units
Adjustable Roller Lever SPDT 1NO/1NC NO/NC IP66 10 A Die Cast Zinc 300V 300V Internal Screw Terminal Contact Block Snap Action GLC PG13.5 Conduit 68.5mm 30.5mm
RS Stock No. 894-3378
Mfr. Part No.NGCMB50AX32B
BrandHoneywell
HK$485.87
Each
units
Plunger DPDT 2NO/2NC IP67 10 mA Metal - 0.03V M12 Positive Break, Snap Action NGC Cable 30mm 16.7mm
RS Stock No. 311-2128
Mfr. Part No.2LS1-4CN151
BrandHoneywell
HK$1,199.71
Each
units
Plunger - - IP67 10 A - 480V 550V - Snap Action - - 98.6mm 40mm
RS Stock No. 808-6857
Mfr. Part No.201LS1
BrandHoneywell
HK$1,696.25
Each
units
Roller Lever SPDT NO/NC - 10 A Die Cast Zinc 480V 550V 1/2 in NPT Conduit Snap Action - Plug In 48.8mm 28.2mm
RS Stock No. 752-9983
Mfr. Part No.D4MC-1020
BrandOmron
HK$282.81
Each
units
Lever SPDT NO/NC IP67 3 A ac, 250 mA dc - 480V 250V Screw Snap Action - Screw 70mm 48.5mm
RS Stock No. 808-3107
Mfr. Part No.GLAA01B
BrandHoneywell
HK$738.90
Each
units
Plunger SPDT NO/NC IP67 10 A Die Cast Zinc 600V 250V 1/2 in NPT Conduit Snap Action GLA Wire Lead 42mm 42mm
RS Stock No. 843-1257
Mfr. Part No.AT0-11-1-IA/ZS
BrandEaton
HK$570.40
Each
units
Plunger - NO/NC IP65 10 A Plastic 415V 220V - Slow Action AT0 Screw - -
RS Stock No. 902-6896
BrandRS PRO
HK$199.63
Each
units
Adjustable Lever DPST NO/NC IP66 10 A Zinc Alloy 400V 250V Cable Snap - Screw 30.3mm 172.5mm
RS Stock No. 752-9615
Mfr. Part No.HL-5050G
BrandOmron
HK$479.56
Each
units
Coil Spring SPST NO/NC IP65 5 A ac, 400 mA dc - 250V 250V Screw Snap Action - Screw - -
RS Stock No. 908-3247
Mfr. Part No.WLSD2-G-N
BrandOmron
HK$844.27
Each
units
Roller Plunger SPST NO/NC IP67 10 A - 500V 250V PG 13.5 Snap Action WL Screw 40mm 67.3mm
RS Stock No. 311-2415
Mfr. Part No.GLAB01A2B
BrandHoneywell
HK$909.95
Each
units
Rotary Lever SPDT NO/NC IP67 6 A Die Cast Zinc 600V 250V - Snap Action GLA PG13.5 Connector 145.8mm 42mm
RS Stock No. 843-1275
Mfr. Part No.AT0-11-S-IA
BrandEaton
HK$412.30
Each
units
Plunger - NO/NC IP65 10 A Plastic 415V 220V - Slow Action AT0 Screw - -
RS Stock No. 822-5617
Mfr. Part No.Z-15GW22-B7-K
BrandOmron
HK$95.58
Each
units
Roller Lever SPDT NO/NC IP00 15 A Thermosetting Resin 500V 250V M4 Snap Action - Screw 49.2mm 29.4mm
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