Siemens 3RW4026-1TB04

Soft starter SIRIUS 3RW40

The Sirius 3RW40 soft starter 250 kilowatts are fitting for standard 3-phase use and are allotted for soft on/off of 3-phase induction engines. They avoid current peaks and torque caused by the use of "star-delta" starters. The Sirius 3RW40 is appointed with optimum functionality. Fitted shunt contact system diminishing the power losses in exploitation, so the constituent element does not overheat. With the four-step rotary switch, the overload trip time may be install. Full adjustable current limitation, the motor is surely covered even from a surprise increase in current strength. Three LEDs are used to display the possible errors, ineffective trip times, phase failure, overheating. Main types applications: pumps, air conditioning systems, escalators, compressors and coolers, working mechanisms, agitators.