Siemens Soft Starter 3RW52, 480V AC, 355 kW, 3 Phase 3RW5246-6TC04

Siemens 3RW5246-6TC04 soft starter is designed for industrial automation to control starting and stopping of three-phase asynchronous motors up to 355 kW with a supply voltage of 480V AC. It ensures smooth motor startups by reducing electrical and mechanical stresses, which enhances operational efficiency in manufacturing, HVAC, water treatment, and heavy machinery applications.

This model features precise 3-phase control, suitable for high-power motors and inside-delta circuits, providing a concentrated, compact solution that saves space and wiring complexity compared to traditional star-delta starters or frequency converters. Its integrated bypass technology lowers heat generation within control cabinets and reduces energy consumption.

Safety and reliability are ensured via intelligent monitoring functions that protect against overheating and motor overload, with customizable current limiting during startup. The unit allows parameterization through rotary potentiometers and offers various communication interfaces such as PROFINET, PROFIBUS, EtherNet/IP, and Modbus TCP, supporting flexible industry 4.0 integrations. The thermistor input enhances motor protection by monitoring thermal conditions.

Mounting is achieved by screw fixing, and the device comes with an IP00 rating. It complies with major standards including EAC, CSA, CE/IEC 60947-4-2, UL, IEC 81346-2, IEC 60721, IEC 60529, and CCC, reflecting its global usability. This product is manufactured in the Czech Republic.

Enables smooth soft starting and stopping of three-phase asynchronous motors. Reduces current peaks and prevents supply voltage fluctuations during startup. Minimizes mechanical load in the drive and reduces network stress.

Energy-saving integrated bypass reduces heat dissipation. Intelligent monitoring protects from overheating and overload. 3-phase control suitable for high motor power and inside-delta circuits. Soft Torque function ensures gentle motor startup.

Remote reset capability for easy fault clearing. Wide supply voltage range with screw and spring-type terminals. Optional communication modules for PROFINET, PROFIBUS, EtherNet/IP, and Modbus TCP.

This Siemens soft starter is ideal for industrial, manufacturing, HVAC, water treatment, and automation control applications requiring reliable motor starting and efficient energy management. Explore more in the Soft Starter category at EnvMart.