Siemens 3RW4458-2BC44

The SIRIUS Soft Starter is engineered for optimal performance at 400 V and 40 °C, featuring a standard current capacity of 970 A and a power rating of 560 kW. This device is capable of handling an inside-delta circuit with a maximum current rating of 1680 A and a power output of 1000 kW, operating within an AC voltage range of 200-460 V.

It incorporates spring-loaded terminals for secure connections and integrates a bypass contact system, enhancing operational efficiency. Key protective features include intrinsic device protection and motor overload protection, ensuring reliable performance under various conditions. The product adheres to IEC standards, with an insulation voltage rated value of 690 V and is suitable for installation in environments with a pollution degree of 3.

Measuring 510 mm in width, 640 mm in height, and 290 mm in depth, the soft starter allows for vertical mounting with adjustable positions. It can accommodate main current circuits through busbar connections and auxiliary circuits via spring-loaded terminals. The control supply operates at both 50 Hz and 60 Hz with a voltage rating of 230 V.

This soft starter is classified under the designation code Q according to EN 61346-2, and it is important to note that it is a phased-out product, with the successor being the SIRIUS 3RW5, specifically the model 3RW5556-2HA14.