3RW3046-1BB14, Soft Starter, 45 kW, 80 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: 3RW3046-1BB14

The Siemens 3RW3046-1BB14 is a SIRIUS 3RW30 series soft starter specified for a rated operational current of 80 A and a motor rating of 45 kW (at 400 V, 40 °C). It accepts a wide supply voltage range of 200–480 V AC (three-phase), making it suitable for common industrial mains systems. The control/supply for the control electronics is verified as 110–230 V AC/DC, and the unit is supplied with screw-type terminals for straightforward wiring and panel mounting (size S3). This model uses a two‑phase control method to limit inrush current during starting and is intended for simple motor soft-start applications such as pumps, fans, compressors and conveyors where basic soft start functionality and reduced mechanical stress are required. Its compact S3 form factor and direct-fit terminal layout make it practical for panel retrofits and OEM machines that need a reliable, basic motor soft starter without advanced communications or extended protection features.

Key Soft Starter Attributes