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Telemecanique XCKM Limit Switch ZCK-21

Telemecanique XCKM Limit Switch ZCK-21


The Telemecanique XCKM limit switch, also known as ZCK-21, is a versatile and reliable device designed for monitoring the position of moving parts in industrial machinery.


  • Brand: Telemecanique (Schneider Electric)
  • Model: XCKM or ZCK-21
  • Contacts: 1 NO + 1 NC Snap action
  • Operating Temperature: -25°C to +70°C
  • Mechanical Life: 10,000,000 cycles
  • Electrical Life: 500,000 cycles
  • Protection: IP66, IP67, IP69K (According to EN/IEC 60529)
  • Housing Material: Metal, Thermoplastic
  • Actuator Type: Roller Plunger
  • Connection Type: Screw Clamp Terminals


  1. Snap Action Contacts: The limit switch is equipped with 1 normally open (NO) and 1 normally closed (NC) snap action contacts, providing reliable and precise switching.
  2. Robust Construction: The switch is built with a durable metal or thermoplastic housing, ensuring resistance to mechanical stress and harsh industrial environments.
  3. Roller Plunger Actuator: The roller plunger actuator provides smooth and reliable operation, even in applications with high vibration.
  4. IP66, IP67, IP69K Protection: With an IP66, IP67, IP69K enclosure rating, the switch is protected against dust, water jets, and high-pressure, high-temperature washdowns.
  5. Wide Operating Temperature Range: The switch can operate in temperatures ranging from -25°C to +70°C, making it suitable for use in various industrial environments.



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