3RW5074-6TB14

This model belongs to the SIRIUS 3RW50 series of high-current motors, with a rated current of 315A. It is suitable for 200-480V main circuits, with a power of approximately 200kW. It features a thermistor input to monitor the motor winding temperature and is suitable for heavy-load start-stop applications of large three-phase motors.

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Siemens SIRIUS 3RW5074-6TB14 High Current Soft Starter Appearance Drawing

Product Positioning

The 3RW5074-6TB14 belongs to the SIRIUS 3RW50 series of high-current models, with a rated current of up to 315A and a power of approximately 200kW. It also features a thermistor input function, making it suitable for the soft-start requirements of large three-phase motors under heavy load conditions.

Core Product Advantages and Features

High current carrying capacity

With a rated current of 315A, it can meet the starting current requirements of large three-phase motors or heavy-duty equipment.

Thermistor temperature monitoring

It can be connected to the motor's built-in PTC temperature sensing element to monitor the winding temperature in real time and prevent damage due to overheating.

3RW50 series design

It belongs to the SIRIUS 3RW50 high-current model, and is different from the 3RW52 series in terms of frame size.

Communication module expansion

It can be equipped with PROFINET, EtherNet/IP, Modbus and other modules to be integrated into the existing monitoring network.

project	Specification
Rated current	315 A (40°C)
Applicable main circuit voltage	200–480 V AC
Control power supply voltage	110–250 V AC
Power (480V rating)	Approximately 200 kW
Product Series	SIRIUS 3RW50
Terminal type	Screw terminals
Input type	Thermistor (PTC) input
Communication Interface	Optional PROFINET / EtherNet / IP / Modbus RTU / TCP / PROFIBUS modules
Protection level	IP00
Casing size	Approximately 230 x 160 x 282 mm
weight	Approximately 8.2 kg
Applicable to	Heavy-load start/stop control for large three-phase asynchronous motors

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