The Whirlpool W11707984 is a thermal fuse, a critical safety component for your microwave oven. It serves as a sacrificial protector, halting the electrical flow if it exceeds a safe threshold. Consider it as a self-destructive switch. When excessive current is detected, usually due to internal problems or power spikes, the fuse is purposefully blown. This avoids potential fire threat... https://www.hnkparts.com/w11707984-whirlpool-fuse-thrml-microwave