Voltage dependent resistor with overheated protection structure

A resistor comprising:

• a ceramic body;
• metal electrodes on sides of the ceramic body, each of the metal electrodes being connected to an electrode lead;
• an insulating layer contacting a metal electrode among the metal electrodes, the insulating layer being meltable in response to heat;
• and
• a conductive connector contacting the insulating layer above the metal electrode and configured to short at least two of the metal electrodes when the insulating layer melts;
• wherein the conductive connector comprises a metal clamp structure that clamps onto the metal electrode over the insulating layer;
• wherein the metal clamp structure comprises raised parts facing the ceramic body at points of contact with the insulating layer so that, when the insulating layer melts, the metal clamp structure is in electrical contact with at least part of the metal electrode;
• and
• wherein the metal clamp structure comprises separation grooves separating the raised parts, the separation grooves dividing a front end of the metal clamp structure into metal strips.