Siemens SIRIUS 3RW55 - A.1.4 Inside-Delta Circuit

Example circuits
A.1 Main circuit connection
SIRIUS 3RW55 soft starter
204 Manual, 08/2018, A5E35630887002A/RS-AB/002
A.1.4
Inside-delta circuit
The inside-delta circuit requires a motor with windings that can be connected in a delta
circuit where a line voltage prevails.
If the soft starter is operated in an inside-delta circuit, the motor power output of the
individual devices is increased by a factor of root 3. On the front of the device behind the
hinged cover, you will find a value table with increased current values for an inside-delta
circuit.
If the load voltage is present and the motor is connected to the device, the soft starter
automatically detects the type of connection.