Siemens 3RW4047-1TB05

Soft starter SIRIUS 3RW40

The Sirius 3RW40 soft starter is intended for high power 250 Kilowatt asynchronous motors. The soft starter allow easily start-up, allows you to protect the motor against overload, lower the current expenditure, inexpensive than utilize of the equipment. The data devices use features unusual to this output diapason: solid-state engine overburden security and integral device defense, controllable current qualification and 2-phase control technique. The Sirius 3RW40 are sections of the SIRIUS modular system. Consequently, they have pinpoint sizes and wiring diagrams. Thanks to its especially compact size, SIRIUS 3RW40 soft starters are half as much the size of star-delta starters, thereby they take at limited space in the monitoring cabinet. Together with the contactor, they are used as safety-free starting union for starting engines.