Siemens 3RW4027-1BB15

Soft starter SIRIUS 3RW40

The Soft starter Sirius 3RW40 is designed for high power 250 kW asynchronous engines. Siemens Soft starter allow light start, protects the motor from overloads, lower the current consumption, which makes the use of apparatus cheaper. These devices apply features unusual to this energy diapason: semiconductor engine overload defense and built-in device defense, adjustable current limiting and control the 2-phase method (polarity balance). The Soft starters 3RW40 are part of the SIRIUS modular system. Consequently, they have identical sizes and wiring schemes. Thanks to their special compact dimensions, Siemens soft starters are half as much the dimension of star-delta starters, thus they take up limited place in the monitoring cabinet. At the contactor, they are utilized as protective infinite conjunction for electric engines.