3RW3037-1BB14, Soft Starter, 30 kW, 63 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: 3RW3037-1BB14

The Siemens 3RW3037-1BB14 is a SIRIUS 3RW30 soft starter sized for motors up to 30 kW (at 400 V, 40 °C) with a rated operational current of 63 A (rated at 40 °C). It supports a wide main supply range of 200–480 V AC (50/60 Hz), making it suitable for common low-voltage industrial distribution systems. Typical motor compatibility includes three-phase asynchronous motors up to 30 kW at 400 V (and 18.5 kW at 230 V) where a compact, entry-level soft starter is required. This model includes an integrated bypass contactor to reduce conduction losses after the start phase, and it accepts a control supply of 110–230 V AC/DC for straightforward panel integration. Applications that match its specification are basic industrial motor-driven machines such as pumps, fans, conveyors and compressors where mechanical stress reduction, inrush current limitation and uncomplicated installation are primary requirements. The device is designed for standard indoor panel mounting and is rated for continuous use at a surrounding temperature of 40 °C without derating.

Key Soft Starter Attributes