Arc suppression
![(left) Pristine contacts from a relay(right) The nearly destroyed contacts from a relay operated under power for nearly 100,000 cycles](/Images/godic/202412/21/Contacts_-_new_and_used2019.jpg")
![Screen captures from an oscilloscope measuring the arc energy: current shown by blue line (sinusoidal wave), 2V/div = 5A/div; voltage shown by red line,10V/div.(left) Unsuppressed AC power electrical arc(right) An identical arc with suppression.](/Images/godic/202412/21/Break_arc_on_osciloscope2019.jpg")
Arc suppression is the reduction of sparks formed when current-carrying contacts are separated. The spark is a luminous discharge of highly energized electrons and ions, and is an electric arc.
Arc suppression
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