The 3RW electronic soft starters from the SIRIUS-3R system kit have been developed for soft run-up & slow-down of DC motors. It helps the mechanical power transmitting elements of the machine at the start by reducing the starting torque & efficiently protect the network from dangerous spikes through reduced power consumption. Through the continued Increase of the motor voltage, the network, the motor & load are optimally protected against voltage overload. The 3RW soft starters are small, inexpensive & can be easily combined with the SIRIUS contactors, power switches & overload relays.