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Will the JKPPTC device cycle? How does it stay latched?

2019-04-25

JKPPTC resettable fuse devices will not cycle between a normal and a tripped state when a fault condition is present. When the JKPPTC device trips it goes from a low resistance to a high resistance state. In the high resistance state a small amount of trickle current is still present. This small trickle current is sufficient to maintain the JKPPTC device in the high resistance state. The JKPPTC device generally requires the power to the circuit to be interrupted, allowing the JKPPTC device to cool before it will return to the normal low resistance state.

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