1. Motor control: It realizes the starting and stopping operations of the motor and enables the motor to run according to the required working mode. Through the control circuit and related components, the starting process and operating status of the motor are precisely controlled.

2. Protection functions:

- Overload protection: When the motor load is too large and the current exceeds the set safety value, the explosion-proof starter will automatically cut off the motor power supply to prevent the motor from being damaged due to overload, extend the service life of the motor, and reduce the safety risk caused by overload at the same time.

- Short-circuit protection: When a short-circuit fault occurs in the circuit, the power supply is quickly cut off to prevent excessive short-circuit current from damaging the motor and the circuit and to avoid dangerous situations such as fires or explosions.

- Voltage loss protection: When the grid voltage drops or disappears, the starter can promptly disconnect the motor power supply to prevent the motor from suddenly starting by itself when the voltage is restored, ensuring the safety of the equipment and operators.

3. Explosion-proof function: In dangerous environments where explosive gases, dust, etc. exist, the special structure and materials of the explosion-proof starter can effectively prevent the sparks, arcs or high temperatures generated inside from causing the combustion or explosion of the surrounding explosive mixtures, ensuring the safe progress of the production process.

4. Signal indication: Some explosion-proof starters also have operating status indication functions, such as power supply indication, start indication, stop indication, fault indication, etc., which is convenient for operators to understand the working status of the motor and the starter and to detect and handle abnormal situations in a timely manner.

In conclusion, on the basis of motor control, the explosion-proof starter, through various protection functions and explosion-proof performance, ensures the safe, stable and reliable operation of the motor in dangerous environments.