3RW5524-1HA14, Soft Starter, 22 kW, 47 A, 200 to 480V AC

Siemens 3RW55 Soft Starter Series – Overview

Siemens 3RW55 soft starters are heavy-duty motor starting solutions designed for high-power industrial applications requiring robust and reliable control of three-phase asynchronous motors. The 3RW55 series focuses on reducing mechanical stress, limiting inrush current, and supporting very high motor power ratings with advanced motor protection and monitoring capabilities. With a rugged design and suitability for demanding operating conditions, Siemens 3RW55 soft starters are well suited for large pumps, compressors, crushers, conveyors, mills, and other heavy industrial machinery where dependable motor starting and long-term reliability are critical.

Product Description: 3RW5524-1HA14

The Siemens 3RW5524-1HA14 is a SIRIUS 3RW55 soft starter rated for 47 A operational current and specified for motor power up to 22 kW (at 400 V, 40 °C). The main supply voltage range for this SKU is 200–480 V AC, with the control supply specified as 110–250 V AC. This high-feature soft starter supports voltage-ramp starting and advanced torque control and includes an internal bypass (shunt) design to reduce heat losses during run. Integrated electronic motor protection functions (thermal overload trip and thermistor support / motor overload protection) and built‑in condition monitoring help protect the motor and allow predictive maintenance. Optional communication modules are available for fieldbus integration (PROFINET, PROFIBUS, Modbus TCP), making this unit suitable for industrial motor starting applications such as large pumps, compressors and conveyor drives where controlled starting torque, reduced mechanical stress and system diagnostics are required. The 3RW5524-1HA14 is aimed at engineers and procurement teams specifying soft starters for three-phase asynchronous motors in medium-voltage distribution environments that need a compact, feature-rich starter with monitoring and communication options.

Key Soft Starter Attributes