Thermal switch

Thermal switches are mainly used for Rube-Goldberg type events such as Mission Possible.

=Description=

=Acquisition=

Thermal fuses
These can be found in almost any appliance with a heating element (toasters, hair dryers, and the like). Since they are one-shot devices, however, the only reasonable way to acquire them is purchasing them, rather than salvaging them.

Resettable Thermal switches
These cannot be reliably found in small appliances. One manufacturer may use them, while another may use a thermal fuse. Purchasing is about your only option, but they are not expensive. As of this writing, the following surplus retailers carry these: Search for "thermal switch". Expect to spend $1-$2, no more. Buy ones with know specifications (NC or NO, switching temp) if possible.
 * American Sci & Surplus
 * All Electronics
 * Electronics Goldmine