What is NTC Open Thermostat

　　1. During the installation and use of the temperature control switch, do not touch the shrapnel and the temperature sensing part, otherwise the temperature of the protector will be inaccurate, the contact will be poor and the action will not be normal.

　　2. When installing, the contact surface should face the leeward side, so as not to affect the function of the shrapnel due to the amount of air blowing and to accumulate dust on the surfaces of contacts A and B, resulting in poor conduction.

　　The temperature switch is a switch that decides on and off according to the temperature of the object to be controlled; according to its different operating principles, it is divided into: bimetal type, pressure type and thermal ferrite

　　Mode.

　　3. Regarding bimetal temperature switches: all kinds of metals have the characteristics of thermal expansion and contraction, and different metals have different expansion coefficients with temperature changes.

　　Working according to this principle, the bimetallic sheet consists of an upper layer of "High Manganese Alloy§ and a lower layer of" Invar§. The expansion coefficient of the former is dozens of times that of the latter, respectively

　　For the "active layer§ and "passive layer§", the contacts A and B of the copper sheet and the spring sheet are in contact at normal temperature, and the entire circuit is in an ON state.

　　4. When the temperature rises, the active layer expands more than the passive layer, and the bimetallic sheet bends downward. When the temperature rises to a certain level, the circuit is disconnected. After cooling to a certain extent, the bimetal is restored and the circuit is connected.

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