It is close until the surface reaches 55 Celsius degree and then the switch open. Automatically reset When the surface cools off about 5 degrees, the switch automatically close. Opening-closing durability: 10000 times or more (under rated load). General-purpose low cost, compact, large capacity, minute current thermostat. This KSD301 thermostat is used either as temperature control and safety limit for household electric appliances and widely applicable for coffee maker, water heater, immersion heaters, electric cookers, microwave ovens, automatic toasters, etc.
