3RW3036-1BB14, Soft Starter, 22 kW, 45 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: 3RW3036-1BB14

The Siemens 3RW3036-1BB14 is a SIRIUS 3RW30 series motor soft starter rated for 45 A continuous current and specified for motors up to 22 kW at 400 V (11 kW at 230 V). The main supply voltage range is 200–480 V AC, making this unit suitable for standard three-phase industrial supplies. Control power for the device accepts 110–230 V AC/DC. The starter uses phase-angle (variable phase) control with a ramp-like voltage increase to limit inrush current and reduce mechanical stress during starts. It includes an integrated bypass contactor to minimise dissipation once the motor is at full speed and provides basic motor overload protection. Typical applications are pumps, fans, compressors and conveyors where straightforward, economical motor soft starting is required and a compact S2-size device is preferred. This SKU is supplied with screw terminals and a compact footprint for panel mounting.

Key Soft Starter Attributes