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SEMINAR TOPICS CATEGORY


Polyfuses (PPTC)

Added on: March 7th, 2012 by Afsal Meerankutty 1 Comment

A fuse is a one time over current protection device employing fusible link that melts after the current exceeds a certain level for a certain length of time. Typically, a wire or chemical compound breaks the circuit when the current exceeds the rated value.

Polyfuse is a new standard for circuit protection .It is resettable. Technically, Polyfuses are not fuses but polymeric positive temperature coefficient thermistors (PPTC). Re-settable fuses provide over current protection and automatic restoration.

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Topic Category - Electrical Topics

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