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A Positive Temperature Coefficient (PTC) device is primarily used for overcurrent protection and temperature regulation in electrical circuits. It acts as a resistor that increases its resistance significantly when a certain temperature threshold is exceeded, thereby limiting the current flow and preventing overheating. PTC devices are commonly found in applications such as circuit protection, heating elements, and as resettable fuses in electronic devices. Their self-regulating nature makes them efficient and reliable for safeguarding sensitive components.

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What happens when a PTC device gets hot?

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