With the system power (R.S.T) phase loss abnormal light signal display, SCR stops output, to prevent the fuse from over-current burning due to the undercurrent generated by the under-phase. After the R.S.T recovery, the SCR automatically resumes the normal mode, the abnormal light is extinguished, and no reset action is required to achieve the optimal automation control state.   
It has a function that the fuse is blown, the abnormal light is displayed, and the SCR stops outputting. When the fuse is removed, it automatically resumes normal operation.   
Auxiliary voltage range: 88V AC-264V AC (50Hz/60Hz), flexible application range, suitable for voltage unstable areas.   
System power supply (R.S.T) 50Hz/60Hz Automatic identification, to achieve the most perfect power output conditions, suitable for use in countries around the world.   
No trouble with the power transmission sequence, greatly saving the time of the electrician, labor cost, material loss, and improve work efficiency.   
Restarting the SCR at any time has a slow start function that reduces the surge current and extends the life of the fuse.   
Small size and easy troubleshooting.   
The fan adopts the patent extraction method, which greatly overcomes the trouble of maintenance. Republic of China Patent (New Type No. 179602).   
The SCR maximum output is set to VR, no external connection.   
Other functions such as over current, over voltage, constant current, constant voltage, heater disconnection and corresponding alarm contact output can be designed according to the requirements of the user. For details, please contact the dealer or the