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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Rincian Komponen Brand Stock Actuator Type Pole and Throw Configuration Normal State Configuration IP Rating Maximum Current Housing Material Maximum ac Voltage Maximum dc Voltage Connection Type Series Contact Type Terminal Type Length Width Dimensions Depth Mechanical Life Minimum Standards Met Operating Force Minimum Operating Temperature Maximum Operating Temperature Mounting Orientation Output Type Hazardous Area Certification
IP65 Snap Action Limit Switch Plastic, NO/NC, 240V Telemecanique Sensors 10 - 2P NO/NC IP65 3 A Plastic 240V 250V Screw OsiSense XC Snap Action Screw 40mm 36mm 40 x 36 x 73 mm 73mm - CSA C22.2 No 14, EN/IEC 60947-5-1, IEC 60947-1, UL 508 - -25°C +70°C Vertical - -
IP66 Slow Break Limit Switch Stay Put Crossed Rods Lever Metal Metal, 2 x (1NC/1NO), 240V Telemecanique Sensors 10 Stay Put Crossed Rods Lever Metal 4P 2 x (1NC/1NO) IP66 3 A Metal 240V 125V Screw OsiSense XC Slow Break Screw 200mm 59mm 200 x 59 x 118 mm 118mm 2000000 cycles - 0.5Nm -25°C +70°C Vertical - -
IP66 Snap Action Limit Switch Spring Return Rotary Head Metal, 2NO/2NC, 240V Telemecanique Sensors 7 Spring Return Rotary Head 2P 2NO/2NC IP66 3 A Metal 240V 250V Screw OsiSense XC Snap Action Screw 43mm 60mm 43 x 60 x 109 mm 109mm - CSA C22.2 No 14, EN/IEC 60947-5-1, IEC 60947-1, UL 508 - -40°C +70°C Vertical - -
IP66, IP67 Snap Action Limit Switch Spring Return Cats Whisker Metal, NO/NC, 240V Telemecanique Sensors 6 Spring Return Cats Whisker 2P NO/NC IP66, IP67 3 A Metal 240V 250V Screw OsiSense XC Snap Action Screw 31mm 30mm 31 x 30 x 65 mm 65mm 5000000 cycles CCC Certified, CSA C22.2 No 14, EN 60204-1, EN 60947-5-1, IEC 60204-1, IEC 60947-5-1, UL 508 0.13Nm -25°C +70°C Vertical - -
Limit switches OsiSense XCRZ03 Schneider Electric 6 - - - - - Steel - - - OsiSense XC - - 200mm 6mm 200 x 6 x 6 mm 6mm - - - -25°C +70°C - - -
IP66 Slow Break Limit Switch Stay Put Crossed Rods Lever Metal Metal, 2 x (2NC), 240V Telemecanique Sensors 5 Stay Put Crossed Rods Lever Metal 4P 2 x (2NC) IP66 3 A Metal 240V 125V Screw OsiSense XC Slow Break Screw 200mm 59mm 200 x 59 x 118 mm 118mm 2000000 cycles - 0.5Nm -25°C +70°C Vertical - -
IP66, IP67 Snap Action Limit Switch Spring Return Round Rod Lever Thermoplastic Plastic, NO/NC, 240V Telemecanique Sensors 5 Spring Return Round Rod Lever Thermoplastic 2P NO/NC IP66, IP67 3 A Plastic 240V 250V Screw OsiSense XC Snap Action Screw 40mm 55mm 40 x 55 x 280 mm 280mm 20000000 cycles CCC Certified, CENELEC EN 50041, CSA C22.2 No 14, EN 60204-1, EN 60947-5-1, IEC 60204-1, IEC 60947-5-1, UL 508 0.1Nm -25°C +70°C Vertical - -
IP65 Slow Break Limit Switch Stay Put Crossed Rods Lever Metal (PBT+PC)-GF30 FR, 2 x (1NC/1NO), 240V Telemecanique Sensors 3 Stay Put Crossed Rods Lever Metal 4P 2 x (1NC/1NO) IP65 3 A (PBT+PC)-GF30 FR 240V 125V Screw OsiSense XC Slow Break Screw 200mm 57mm 200 x 57 x 200 mm 200mm 1000000 cycles - 0.5Nm -25°C +70°C Vertical - -
IP66 Slow Break Limit Switch Stay Put Crossed Rods Lever Metal Metal, 2 x (1NC/1NO), 240V Telemecanique Sensors 3 Stay Put Crossed Rods Lever Metal 4P 2 x (1NC/1NO) IP66 3 A Metal 240V 125V Screw OsiSense XC Slow Break Screw 200mm 59mm 200 x 59 x 118 mm 118mm 2000000 cycles - 0.5Nm -25°C +70°C Vertical - -
IP66, IP67 Slow Break Limit Switch Spring Return Roller Lever Plunger Thermoplastic Plastic, NO/NC, 240V Telemecanique Sensors 3 Spring Return Roller Lever Plunger Thermoplastic 2P NO/NC IP66, IP67 3 A Plastic 240V 250V Screw OsiSense XC Slow Break Screw 31mm 39.5mm 31 x 39.5 x 65 mm 65mm - CSA C22.2 No 14, EN 60204-1, EN 60947-5-1, IEC 60204-1, IEC 60947-5-1, UL 508 6N -25°C +70°C Vertical - -
IP66, IP67 Slow Break Limit Switch Spring Return Roller Lever Thermoplastic Plastic, NO/NC, 240V Telemecanique Sensors 3 Spring Return Roller Lever Thermoplastic 2P NO/NC IP66, IP67 3 A Plastic 240V 250V Screw OsiSense XC Slow Break Screw 31mm 39.5mm 31 x 39.5 x 65 mm 65mm - CSA C22.2 No 14, EN 60204-1, EN 60947-5-1, IEC 60204-1, IEC 60947-5-1, UL 508 0.1Nm -25°C +70°C Vertical - -
IP66, IP67 Snap Action Limit Switch Spring Return Roller Lever Plunger Thermoplastic Plastic, NO/NC, 240V Telemecanique Sensors 3 Spring Return Roller Lever Plunger Thermoplastic 2P NO/NC IP66, IP67 3 A Plastic 240V 250V Screw OsiSense XC Snap Action Screw 31mm 39.5mm 31 x 39.5 x 65 mm 65mm 3000000 cycles CSA C22.2 No 14, EN 60204-1, EN 60947-5-1, IEC 60204-1, IEC 60947-5-1, UL 508 6N -25°C +70°C Vertical - -
IP66 Snap Action Limit Switch Metal, 2NO/2NC, 240V Telemecanique Sensors 2 - 2P 2NO/2NC IP66 3 A Metal 240V 250V Screw OsiSense XC Snap Action Screw 40mm 44mm 40 x 44 x 77 mm 77mm - CSA C22.2 No 14, EN/IEC 60947-5-1, IEC 60947-1, UL 508 - -25°C +70°C Vertical - -
IP66 Snap Action Limit Switch Spring Return Roller Lever Thermoplastic Metal, 2 x (1NC/1NO), 300 V, 500 V Telemecanique Sensors 2 Spring Return Roller Lever Thermoplastic 4P 2 x (1NC/1NO) IP66 10 A Metal 300 V, 500 V 300 V, 500 V Screw OsiSense XC Snap Action Screw 77mm 36mm 77 x 36 x 81 mm 81mm 3000000 cycles - 0.2Nm -25°C +70°C Vertical - -
Wireless limit switch, radio emitter, me Telemecanique Sensors 2 Plunger - - - - Metal - - - XC - - - - - - - - - - - - - -
Wireless limit switch, radio emitter, me Telemecanique Sensors 2 Roller Lever - - - - Metal - - - XC - - - - - - - - - - - - - -
IP66 Snap Action Limit Switch Rotary head Plastic Telemecanique Sensors 1 Rotary head - - IP66 - Plastic - - Screw OsiSense XC Snap Action - 136mm 40mm 40 x 136 x 61 mm 61mm 40000 cycles - 50N -25°C +55°C Vertical Wireless ATEX
IP67 Snap Action Limit Switch Stay Put Without Operating Lever Metal, NO/NC, 600V Telemecanique Sensors 1 Rotary head SPDT-DB NO/NC IP67 1.2 A Metal 600V 600V Screw 9007 Snap Action Screw 39.37mm 63.5mm 39.37 x 63.5 x 102.108 mm 102.108mm 10000000 cycles CE Certified, CSA Certified, UL Listed - -20°F +185°F Vertical - -
Wireless Limit Switch Roller Lever Plastic Telemecanique Sensors 1 Roller Lever - - - - Plastic - - - XC - - - - - - - - - - - - - -
Wireless limit switch, radio emitter, me Telemecanique Sensors 1 Plunger - - - - Metal - - - XC - - - - - - - - - - - - - -
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