Siemens 3RW4027-1BB14

Soft starter SIRIUS 3RW40

The Sirius 3RW40 soft starter up to 250 kW are fitting for standard 3-phase applying and are allotted for soft on/off of 3-phase asynchronous motors. They avoid the inrush current and torque that occur when applying "star-delta" starters. Soft starter Siemens 3RW40 is appointed with optimal serviceability. The built-in bypass contact system reduces the power losses in exploitation, whereby the components element does not super heat. Use time can be set overload tripping 4-step rotary switch. Thanks to the controllable current limitation, the engine is reliably covered yet from a surprise growth in current strength. The 3 LEDs are utilized to mapping the possible errors, invalid trip times, no load, device failure. The main types applications: fans, air conditioning systems, escalators, compressors and coolers, centrifuges, agitators.