Fuse element, fuse device and protection device

A fuse element, comprising:

• a low-melting-point metal layer;
• a high-melting-point metal layer provided over at least one surface of the low-melting-point metal layer;
• and
• an intermediate layer disposed between the low-melting-point metal layer and the high-melting-point metal layer, wherein
• the intermediate layer is directly in contact with both the high-melting point metal layer and the low-melting point metal layer,
• each of the high-melting-point metal layer and the intermediate layer is made of a metal that is liquefied by contacting a molten form of the low-melting-point metal layer,
• the high-melting point metal layer is made of silver or an alloy comprising silver as a main component thereof,
• a melting point of a material constituting the intermediate layer is higher than a melting point of a material constituting the low-melting-point metal layer and lower than a melting point of a material constituting the high-melting-point metal layer, and
• the intermediate layer is made of zinc or an alloy comprising zinc as a main component thereof.