Product review (5 stars): Inexpensive fix
Technically, this does not " blow" like an electrical fuse. Its metallic inside and when it overheats, usually your vent is blocked, it melts and opens up. After it cools, it makes continuity again. If blockage is not fixed, it will keep happening. After awhile, it will get weak and stay open. This was my case. The local appliance shop wantef 21 bucks for this part. Amazon saved me some money.