3RW3014-1BB14, Soft Starter, 3 kW, 6.5 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: 3RW3014-1BB14

The Siemens 3RW3014-1BB14 is a SIRIUS 3RW30 series soft starter rated for 6.5 A (at 40 °C) with motor output ratings up to 3 kW at 400 V (and 1.5 kW at 230 V in the standard circuit). It is designed for three-phase supply voltages from 200 to 480 V AC and accepts a control/auxiliary voltage of 110–230 V AC/DC. The unit uses thyristor-based soft starting with an integrated bypass contact system to reduce heating and losses after start-up, and it is specified for operation on 50–60 Hz networks.

Typical motor compatibility covers small industrial motors in the 1.5–3 kW range (depending on system voltage and ambient temperature). This model is appropriate for straightforward industrial motor starting tasks such as small pumps, fans, compressors and conveyors where simple soft-start functionality and compact footprint are required. Notable verified features for this SKU include the integrated bypass contact system and thyristor power stage. The device does not provide intrinsic motor overload protection; external overload or motor protection must be used where required by the application.

Practical notes for procurement and installation: the rated operational current falls with increased ambient temperature (manufacturer ratings specify 6 A at 50 °C and 5.5 A at 60 °C), so select the correct size when ambient conditions or duty cycle impose additional thermal stress. The 3RW3014-1BB14 is intended as a low-cost, easy-to-commission soft starter for engineers and maintenance teams who need controlled starting current and reduced mechanical shock without advanced communication or integrated motor protection.

Key Soft Starter Attributes