Winston AC Motor Soft Starter Pump Soft Starter WSTR3022
WSTR Series Motor Soft Starter is a new generation of Internal bypass and Multi- function intelligent Soft Starter, independently researched and developped by the Winston Engineers Group. Integrated the bypass AC Contactor and the Thermal Relay in one.WSTRD Series Motor Soft Starter greatly reduces the cost of manufacturing and the size of Volume. Meanwhile, WSTRD Series and WSTR Series support the remote Communication Protocol, whole LCD can show Chinese/ English by delection;further optimizing the internal structure and functions, providing high anti-interference, a various of protection functions and control models.

Complete protection function                            Muitiple start and stop modes
Soft Start overheat protection                            Current limit start
Input phase protection                                   Voltage ramp atart
Output phase protection                                 Jump mode start
Three-phase unbalance protection                        Current ramp start 
Start over current protection                             Voltage limited current double closed loop start
Run overload protection                                 Soft stop
Low voltage protection                                  Free stop
Load short circuit protection

Various control support
Programmable relay output
Programmable fault relay output
4-20mA DC analog output
RS485 Communication input/output
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