The DSE331 is an ATS(Automatic Transfer Switch) Controller. The module will monitor the voltage and
frequency of the incoming S1 AC supply and in the event of failure will issue a start command to S2.
Once S2 is available and producing an output within limits, the DSE331 will control the transfer device and switch the load from S1 to S2. Once the S1 supply returns to within limits, the module will command a return to S1 and shut down S2.

Various timing sequences are available to prevent nuisance starting on minor supply breaks. Configurable digital inputs and outputs make the DSE331 fully flexible to suit a wide variety of applications.

The module can be easily configured using the DSE Configuration Suite PC Software.