The Siemens 3RW4036-1BB14 is a SIRIUS soft starter (S2) for three-phase motors, delivering 22 kW at 400 V with a continuous current rating of 45 A to provide a controlled ramp start and limit inrush. It supports AC input voltages from 200 to 480 V and uses a 110–230 V AC/DC control supply, with wiring via screw terminals for robust field connections, and is specified for ambient operation up to 40 °C. This device reduces motor voltage during startup to achieve gentle acceleration and protect electrical and mechanical systems, making it a compact, Siemens Sirius soft-starter option within the 3RW40 family for panel-mounted installations.
