Siemens 3RW4046-1BB14

Soft starter SIRIUS 3RW40

Siemens Sirius 3RW40 up to 250 kilowatts (at 400 V) are suitable for standard 3-phase applying and are allotted for soft on/off of three-phase asynchronous engines. They avoid current peaks and torque that happen when utilization star-delta starters. The Sirius 3RW40 is appointed with optimum serviceability. Fitted shunt contact system reduces energy losses in exploitation, whereby the components element does not warm-up. With the four-step rotary switch, the overload trip time may be install. Thanks to the controllable current limitation, the engine is reliably defended yet from an unexpected growth in amperage. The 3 LEDs are utilized to mapping the operating mode, invalid trip times (trip class), phase failure, device failure. The main types applications: pumps, air conditioning systems, escalators, compressors and coolers, centrifuges, mixers.