Siemens 3RW4047-1BB05

Soft starter SIRIUS 3RW40

Siemens Sirius 3RW40 is designed for high power asynchronous engines (up to 250 Kilowatt). The soft starter provides light start, protects the engine against overload, lower the current expenditure, which do the utilize of apparatus cheaper. The data models use features unusual to this energy diapason: solid-state motor overload security and integral appliance defense, regulating current limiting and two-phase monitoring method. The soft starter Siemens 3RW40 are sections of the SIRIUS modular system. Consequently, they have identical dimensions and connection diagrams. Due to their especially compact dimensions, Siemens soft starters are half as much the dimension of star-delta starters, thus they take up minimum place in the monitoring cabinet. Together with the contactor, they are used as safety-free starting conjunction for electric motors.