3RW5244-6TC14

3RW5244-6TC14 has a rated current of 250A, is suitable for 200-480V three-phase motors, has a built-in thermistor input, a control voltage of 110-250V AC, a motor reference power of 132kW with 400V standard wiring and 250kW with internal delta wiring, and a UL rated power of 75HP with 230V and 150HP with 480V.

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Siemens 3RW5244-6TC14 SIRIUS soft starter 250A thermistor model product image

Product Positioning

The 3RW5244-6TC14 belongs to the SIRIUS 3RW52 series soft starter, with a rated current of 250A. It has a built-in thermistor input to monitor the motor temperature rise and is suitable for soft starting and soft stopping applications of medium and large three-phase motors in general factories and public facilities.

Core Product Advantages and Features

Thermistor temperature protection

It has a built-in thermistor input, which can be connected to a motor winding sensor to monitor the temperature rise.

Covering both IEC and UL specifications

It also provides IEC metric current and UL horsepower comparison data to facilitate cross-regional selection.

Medium and high current starting capability

With a rated current of 250A, it is suitable for the soft start requirements of medium and large motors such as pumps and fans in factories.

Supports multiple communication modules

Optional communication interfaces such as PROFINET, PROFIBUS, and Modbus TCP can be added.

project	Specification
model	3RW5244-6TC14
Rated operating current	250 A
Main circuit rated voltage	200-480 V AC
Control power supply voltage	110-250 V AC
Motor power (400V, standard wiring)	132 kW
Motor power (400V, internal delta connection)	250 kW
Motor power (230V, standard wiring)	75 kW
UL rated (230V/480V)	75 HP / 150 HP
Protection level	IP00
Terminal type	Screw terminals
Temperature protection	Built-in thermistor input
External dimensions (height x width x depth)	393 x 210 x 203 mm
net weight	9.9 kg

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3RW5244-6AC14

The SIRIUS 3RW5244-6AC14 is a general-purpose soft starter with a rated current of 250A. It features a screw terminal analog output design, a built-in bypass contactor, and optional PROFINET/PROFIBUS communication modules. It is suitable for the gradual start and stop control of medium and large three-phase asynchronous motors.

3RW5244-6AC05

This model is a 24V AC/DC version of the 3RW5244 series, with a rated current of 250A. It is suitable for 200-600V main circuits, features screw terminals and analog output design, and can be equipped with various communication modules to facilitate integration into equipment and machines with low-voltage DC control circuits.