What are chattering problems for a basic switch?

ID: FAQE20041E



When switching contacts, chattering (the moment the contacts leave) and bouncing (the moment the contacts come in contact) always occurs in a basic switch with contacts. Chattering and bouncing may vary depending on the switch operating speed, switch operating load, and contact corrosion, while contact resistance may become unstable at the switching point.


Chattering occurs right before the contacts are switched (NC to NO, NO to NC). Specifically, the slower the actuator is operated, the longer the amount of time contact resistance is unstable. This unstable contact leads to unstable output signal and may result in equipment stoppage.

Extremely Slow Operating Speeds:
The contact between the contacts becomes unstable and chattering occurs.
Incorrect signals are output and arcing causes contact deterioration.

Extremely Slow Operating Speeds

For more information, see "Switch Basics" Applications / Speeds.

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Product category Switches Basic Switches
Classification Trouble shootings
Related keywords
  • Basic Switch
  • Chattering
  • Bouncing
  • Operating Speed
  • Operating Load
  • Contact Corrosion
  • Contact Deterioration

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