What is difference between 3Phase and 3Phase+s?

The difference between the two versions of the 3-phase overvoltage and under voltage protection devices is pretty straightforward. The basic 3-phase version only lets power flow when all three phases are working properly. On the other hand, the 3-phase+s version is more flexible. It allows power to flow even if just one phase is working. So, if one phase fails, the 3-phase+s version ensures that power keeps running, whereas the basic 3-phase version requires all three phases to be in order for power to flow.

1. Over-voltage protection: Adjustable
2. Under-voltage protection: Adjustable
3. Over-Current protection: Adjustable
4. Asymmetry protection
5.Phase sequence protection
6. Active time and reconnect time adjustable
7. Voltage and current can be manually calibrated