The soft-start Switchboard adopts the method of gradually voltage increasing that avoids direct start-up and the problem of mechanical and electric pressure. It can lengthen mechanical life of the ESP-unit and reduce maintenance, which can make it more economic and safe to meet starting requirement for ESP unit.

Main functions:

1. Decrease starting current.

2. Eliminate operating over-voltage.

3. Builted-in Surge voltage absorption equipment.

4. By-pass contactor. If the controller senses that the soft starter itself has a malfunction, the output voltage can be switched to full voltage to ensure the continuous running by the built-in bypass contactor.

5. Auto-startup under load time delay.

6. Consummate protection.overload, under load, short circuit, phase loss, three phase unbalance.

7. Backlit LCD display and programming keypad.

8. Default Phase and Phase discrimination Protection.

9. Grounding automatic-alarming function.

10. Communication and remote control. (Support modbus protocol)