Siemens 3RW4028-1BB05

Soft starter SIRIUS 3RW40

Siemens Soft starter 3RW40 is intended for high power induction engines (up to 250 kW). The soft starter provides easy start, allows you to protect the motor from overloads, reduces the current rate, which do apply of apparatus cheaper. The data devices use features unique to this output diapason: semiconductor motor overburden protection and built-in device defense, controllable current qualification and two-phase monitoring technique. The Sirius 3RW40 are sections of the SIRIUS modular system. Consequently, they have identical dimensions and connection diagrams. Thanks to their special dense dimensions, SIRIUS 3RW40 soft starters are half as much the size of star-delta starters, thus they take up limited space in the monitoring cabinet. At the contactor, they are utilized as protective infinite conjunction for electric motors.