WY19 is temperature thermostat, not current thermostat, It has small size but high capacity. The applications are motors, lighting and home appliances.
TS01 Button type is snap action and bimetallic thermostat, Bimetal trips off or on quickly to open or close the circuit when temperature reaches the prescribed value.
17AME is a both temperature and current sensitive protector. It has a small size but high capacity. The applications are motors, lighting and home appliances.
6AM thermal protector has small size and oil & paint resistance.