The MCST4825ES is a thermal switch manufactured by Sensata Technologies. It is a single-pole, single-throw (SPST) switch rated for 25A at 250VAC. The switch is designed to open when the temperature reaches a set temperature and close when the temperature drops lower than the reset temperature. It features a wide operating temperature range, a snap-action bimetal element, a low differential temperature, and a low-temperature sensitivity. The MCST4825ES also has a wide range of applications, such as motor thermal protection, motor overload protection, motor over-temperature protection, heat sink protection, and other high-temperature protection applications.