3RW3018-1BB14, Soft Starter, 7.5 kW, 17.6 A, 200 to 480V AC

Siemens 3RW30 Soft Starter Series – Overview

Siemens 3RW30 soft starters are compact and cost-effective motor starting solutions designed for basic soft starting of three-phase asynchronous motors in standard industrial applications. The 3RW30 series focuses on reducing mechanical stress and limiting inrush current during motor start-up, providing a simple and reliable alternative to direct-on-line starting. With a straightforward design and easy commissioning, Siemens 3RW30 soft starters are well suited for pumps, fans, compressors, conveyors, and other simple motor-driven machines where basic motor starting control is sufficient.

Product Description: 3RW3018-1BB14

The Siemens 3RW3018-1BB14 is a SIRIUS 3RW30 soft starter specified for small three-phase motors up to 7.5 kW (at 400 V). It is designed for use on supply systems from 200 to 480 V AC and has a rated operational current of 17.6 A (specified at 40 °C). Control voltage for this SKU is 110–230 V AC/DC, making it compatible with common industrial control supplies. Typical applications include starting pumps, fans, compressors and small conveyor drives where limiting inrush current and reducing mechanical stress at start-up are required. The compact S00 size and DIN-rail / screw mounting options make the unit suitable for space-constrained control panels and retrofit installations. This model is intended for straightforward soft starting duties and provides the electrical ratings and control-voltage flexibility expected for basic industrial motor starting tasks.

Key Soft Starter Attributes