Siemens 3RW4047-1BB15

Soft starter SIRIUS 3RW40

Soft starters up to 250 kW (at 400 V) are suitable for standard 3-phase applications and are allotted for soft start/stop of three-phase induction motors. They avoid the inrush current and torque caused by the utilize of "star-delta" starters. The Siemens 3RW40 soft starter is equipped with optimal operating. Fitted bypass contact system reduces energy losses within operation, whereby the components do not overheat. On-off time can be set overload tripping 4-step rotary switch. Full managed current limitation, the engine is reliably defended yet from an unexpected increase in current strength. The 3 LEDs are utilized to display the operating mode, ineffective trip times, phase failure, overheating. Main typical applications: fans, air conditioning systems, assembly lines, chillers, working mechanisms, agitators.