For standard thermostats, non inductive ratings are as follows:
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10A at 115V AC |
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2A at 28V DC |
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2A at 115V DC |
Although the thermostat is a robust switching device its first function is in sensing the temperature to be controlled and if the contacts are subjected to unnecessarily arduous duties performance may be impaired.
Relays
A relay is a useful component in a thermostat control circuit but due to the relatively slow make & break thermostat contact action the relay may in some applications not at first energize positively and contact chatter may result. This effect can be minimized by the fitting of a small value capacitor with an associated series resistor.
