Siemens 3RW4024-1BB05

Soft starter SIRIUS 3RW40

The Soft starter Sirius up to 250 kW (at 400 V) are suitable for standard three-phase applying and are designed for soft start/stop of 3-phase asynchronous engines. They prevent the inrush current and torque caused by the use of star-delta starters. Soft starters are appointed with optimum functionality. The built-in bypass contact system reduces energy losses during operation, so the components do not super heat. With the four-step rotary switch, the overload trip time can be install. Thanks to the controllable amperage limit, the engine is reliably covered yet from an unexpected growth in current strength. Three LEDs are used to mapping the possible errors, ineffective trip times (trip class), no load, overheating. Main typical applications: construction machines, presses, conveyors, chillers, centrifuges, mixers.