thermal switch
Bimetallic thermal switches basically fall
into two broad categories: 1) creep action devices with slow make/slow break
switching action; and 2) snap action devices with quick make/quick break
switching action.
Creep action devices are excellent in
either a temperature control application or as a high limit control. They have a narrow temperature differential
between the opening and closing temperatures and generally have more rapid
cycling characteristics than snap action devices.
Snap action devices are most often used for
temperature limiting applications as their fairly wide differential between
opening and closing temperature provides slower cycling characteristics. We have been able to control the amount of
differential in many of our snap action controls, that enables them to be used
for temperature control applications, especially in dual voltage applications.