With the development of the electric power industry, electricity now has been accompanied by every detail of our lives, so that the protection for the power industry, began to get more and more attention, because the circuit in the daily work, it is easy because of overvoltage or undervoltage and a certain fault, the fault if not timely be stop or maintenance, very prone to fires and accidents are very serious, serious threat to our living, work safety, the use of over voltage and under voltage protection devices can guarantee the safe use of electricity in our working life.

1. over voltage and under voltage protection devices is free to close and carrying all current loop, control work, if the load current or the fault current, over-voltage breaker will be very sensitive to these currents will be cut off, and the composite can also be connected to the current and the function of compensation, such invisible can prevent the expansion of the accident, to ensure the safe operation of all circuits, so when all electrical appliances once super young or non normal operation of the case, as long as the failure, protection of overvoltage and undervoltage protection devices will automatically disconnect switch, play a protective role for the line, and leakage protection, there are powerful, this is now used very widely, overvoltage and undervoltage protection devices can make more electricity safety prevention get promoted.

2. In one circuit, over-voltage breaker can be used to distribute electricity, do not need to start asynchronous motor is very frequent, can be very good for the implementation of the protection of the motor power supply line, once the machine overload occurs very serious or in order to prevent short circuit, undervoltage fault overvoltage the high-voltage circuit breaker can timely and automatically cut off the circuit, the operation is very fast in the process, so that the function of very powerful combination functions as a fuse switch and over-voltage breaker, and after the analysis of the fault current does not need to change parts, overvoltage and undervoltage protection devices are very simple and convenient in the process of using.

3. over voltage and under voltage protection devices price is very cheap now, and the installation and use is also very simple, the action time is very fast so that greatly control fault in the shortest possible time, to avoid causing more serious accidents, we all know that once the electrical fire caused by the results are very seriously, so the undervoltage breaker use is very powerful, is the most critical can fit any electric monitoring and protection, greatly improve our electrical safety performance, so that electricity is very safe and no hidden state, for the daily work and maintenance, also there is a great role in promoting.