High-voltage resistant overcurrnet protector

The utility model relates to an overcurrent protection device which is capable of withstanding high voltage. The utility model comprises a polymer current sensing component which is made by polymer conductive compound material with positive temperature coefficient. The utility model also comprises at least a ceramic current sensing component which is made by ceramic material with positive temperature coefficient. The ceramic current sensing component is arranged between the polymer current sensing components. At least a contact layer, an upper electrode sheet and a lower electrode sheet is included. The number of the polymer current sensing components is at least one. The contact layer is separately arranged between the polymer current sensing component and the ceramic current sensing component. And the polymer current sensing component and the ceramic current sensing component form a series connection structure. The upper electrode sheet is arranged at the upper surface of the series connection structure, and the lower electrode sheet is arranged at the lower surface of the series connection structure. The overcurrent protection device of the utility model not only withstands high voltage, but also eliminates the phenomenon of producing negative temperature coefficient.