1.Use reliable mechanical interlock and electric interlock, actuators using independent load isolation
       switch,safe and reliable to use;

2. Using a zero technology,an emergency can be forced to zero(cut off the two power supplies at the same time),it
       can meet the needs of the fire;

3. Perform load isolation switch adopts single motor drive, switch reliable, stable, no noise, small impact;

4. Perform load isolation switch with a mechanical interlock device, reliable operation,the commonly used spare
       power supply and is not affected each other;

5.It has obvious on off position indicator,padlock,and other functions, it can realize isolation between the
       source and load;

6. Good safety performance, high degree of automation, high reliability,long service life.