Fuse with fuse state indicator

A fuse comprising:

• a pair of spaced apart electrical terminal elements;
• an electrically conductive wire electrically connecting the electrical terminal elements and extending along a wire path, the electrically conductive wire being configured for resistive heating in an overcurrent condition;
• a temperature sensitive element adapted to change color when heated to a predetermined transition temperature, wherein the temperature sensitive element extends along at least a portion of the electrically conductive wire in thermal contact therewith and is adapted to absorb heat from the electrically conductive wire;
• wherein the temperature sensitive element is adapted to change color along a first conforming path that substantially conforms to the wire path of the electrically conductive wire in a first overcurrent condition;
• wherein the temperature sensitive element is adapted to change color at a combined second conforming path, which substantially conforms to the wire path of the electrically conductive wire, and at least one first deviating path, which deviates from the conforming path, in a second overcurrent condition that is distinct from the first overcurrent condition.

A fuse comprising:

• a fuse body having an exterior surface;
• a pair of spaced apart electrical terminal elements on the fuse body;
• and
• a fuse state indicator on the exterior surface of the fuse body, the fuse state indicator including:
• a temperature sensitive element having an upper surface facing away from the exterior surface of the fuse body, the temperature sensitive element comprising a material that is capable of changing color when heated to a predetermined transition temperature to form a mark on the temperature sensitive element,
• an electrically conductive element extending across the upper surface of the temperature sensitive element in thermal contact therewith, the electrically conductive element electrically connecting the pair of spaced apart electrical terminal elements and being configured for resistive heating in an overcurrent condition, and
• a window overlying at least a portion of the upper surface of the temperature sensitive element and at least a portion of the electrically conductive element,
• wherein the fuse state indicator is configured to form an image of the electrically conductive element on the temperature sensitive element due to heat transferring from the electrically conductive element to the temperature sensitive element in response to an overcurrent condition.