Siemens 3RW4055-6BB44 SIRIUS S6 Soft Starter 75 kW 134 A

The SIRIUS S6 soft starter, also known as a soft start device, motor soft starter or soft starter, from Siemens is an electrical component from the motor starters category. With type number 3RW4055-6BB44, it serves the gentle control of the start-up and shut-down of electric motors. It is designed for a rated power of 75 kW at 134 A and 400 V and operates at an ambient temperature of 40 °C. The input voltage range is 200-460 V AC. The device has dimensions 25 x 17 x 33 cm and weighs 4.7 kg. Soft starters reduce mechanical loads and current peaks, thereby extending the lifespan of drive components. Typical applications include pumps, fans, compressors, and conveyor systems, where they smooth motor start-up and ensure operational safety in automation technology, mechanical engineering, and industrial production facilities.

SIRIUS soft starter S6 rated for 134 A and 75 kW at 400 V, operating at 40 °C. Input voltage range is 200-460 V AC