1, the thermostat is a switch, used to control the fire wire (positive) on and off, lower than the desired temperature disconnect, higher than the set temperature on

2, TCA, TCB for the thermocouple poles, thermostat above the + connected to the red pole, - connected to the blue pole. That is, the thermostat 1, 2 pins.

3, the thermostat's 9, 10 pins for the power supply, the above picture is AC 220V, directly connected to the zero line firewire can be.

Extended information:

Working principle is the ambient temperature through the temperature sensor is automatically sampled, instant monitoring, when the ambient temperature is higher than the control setting value control circuit Start, can be set to control the return difference.

If the temperature is still rising, when it rises to the set overrun alarm temperature point, start the overrun alarm function. When the controlled temperature can not be effectively controlled, in order to prevent the destruction of equipment can also be tripped by the function to stop the equipment to continue to run.

Mainly used in the power sector to use a variety of high and low voltage switchgear, dry-type transformers, box-type substations and other related temperature use.