Siemens 3RW4046-1TB04

Soft starter SIRIUS 3RW40

The Soft starter Sirius up to 250 kilowatts (at 400 V) are suitable for standard three-phase use and are allotted for soft start/stop of three-phase induction engines. It's avoid current peaks and torque that occur when applying star-delta starters. Soft starters are organized with optimum serviceability. The built-in bypass contact system reduces energy losses within exploitation, so the components do not overheat. Use time can be set overload using 4-step rotary switch. Thanks to the managed amperage limitation, the engine is surely defended yet from an unexpected increase in amperage. Three LEDs are utilized to mapping the possible errors, invalid trip times (trip class), phase failure, overheating. The main types applications: construction machines, presses, conveyors, chillers, centrifuges, agitators.