3RW5215-1AC14, Soft Starter, 11 kW, 25 A, 200 to 480V AC

Siemens 3RW52 Soft Starter Series – Overview

Siemens 3RW52 soft starters are high-performance motor starting solutions designed for demanding industrial applications requiring precise and reliable control of three-phase asynchronous motors. The 3RW52 series focuses on reducing mechanical stress, limiting inrush current, and supporting higher motor power ratings with advanced protection functions compared to compact soft starters. With robust construction and enhanced motor protection capabilities, Siemens 3RW52 soft starters are well suited for heavy-duty applications such as large pumps, compressors, conveyors, mixers, and industrial process machinery where dependable motor starting and operational reliability are critical.

Product Description: 3RW5215-1AC14

The Siemens 3RW5215-1AC14 is a SIRIUS 3RW52 soft starter specified for mid‑range three‑phase motors. It is rated 25 A (Ie) with a nominal motor power rating of 11 kW at 400 V, and is designed for supply voltages from 200 to 480 V AC. The device accepts a control/supply voltage of 110–250 V AC for its control circuitry. As a three‑phase controlled soft starter it supports adjustable current limiting during start (Soft Torque / current limit functionality) to reduce inrush and mechanical stress, and includes an integrated bypass contactor to lower heat dissipation during run and simplify wiring. Built for industrial motor starting tasks, this model is suitable for pumps, conveyors and similar medium‑power machines where reduced starting current, smoother torque build‑up and onboard motor protection (electronic overload and thermistor input options) are required. Optional plug‑in communication modules (PROFINET, PROFIBUS, Modbus TCP/RTU and Ethernet/IP variants) allow integration into automation networks when needed.

Key Soft Starter Attributes