12. PPTC Selection & Failures cases

Question.5

A battery-powered device has a PPTC on its output connector.
Junior Engineer uses wrong connection causing a permanent short. The PPTC trips and the device appears to stop working. He keeps the system in this situation as it is.
What will happen ?

PPTC protects- No current flows
PPTC stays tripped- small leakage current still flows, dissipating power, heated.
PPTC cycles between tripped and reset states repeatedly- causing system ON/ OFF
PPTC will be damaged in a few seconds.

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