Microtemp Thermal Fuse Protector One Shot 172c degree C  Universal Pack Of 2.

Rated for continuous operating currents up to 10 amps @ 230 VAC, applied to millions of appliances and personal care products each year, providing reliable back-up protection for temperature controlling thermostats and other over-temperature conditions. Also widely applied in office machines, portable heaters and industrial equipment as a thermal safeguard.  

The price is for a packet of 2.