e/Zero positive zero

Information
has gloss	eng: Zero Positive Zero (ZPZ) refers to a way of designing electrical components using a three-layer structure, consisting of two thin metal layers (with essentially zero resistance) separated by a layer of a material with a positive temperature coefficient (PTC). In this geometry each of the metal layers act effectively as electrodes, and current will flow perpendicular through the construction. The rated voltage of a ZPZ component is primarily set by the thickness of the PTC layer, and secondarily by the electrical characteristics of the PTC layer.
lexicalization	eng: Zero positive zero
instance of	(noun) an electrical device that resists the flow of electrical current resistance, resistor