3RW5553-6HA14

The 3RW5553-6HA14 is a Siemens SIRIUS 3RW55 series soft starter with a rated capacity of 720 amps. It uses screw terminal wiring and has a control voltage of 110 to 250 volts AC. It is suitable for the gradual start and stop of large three-phase motors.

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Product Positioning

The 3RW5553-6HA14 is a model in the SIRIUS 3RW55 high-current soft starter series, with a rated current of 720 amps, which can be used for large three-phase motors with a voltage of approximately 400 volts and a wattage of approximately 400 kW.

Core Product Advantages and Features
High rated current design
With a rated current of 720 amps, it meets the high current requirements of large motors during startup.
Wide voltage compatibility range
The main circuit voltage covers 200 to 480 volts AC, and is compatible with industrial voltage specifications in many countries.
Modular communication optional
It can be equipped with field bus modules such as PROFINET and integrated into the existing automation monitoring architecture.
project Specification
Product Type SIRIUS 3RW55 High Current Soft Starter
Rated current 720 A (40°C)
Main circuit voltage 200-480 V AC
Control voltage 110-250 V AC
Power reference value Approximately 400 kilowatts at 400V
Terminal type Screw terminals
net weight Approximately 56 kilograms
Packaging size 575 x 880 x 350 mm
Place of origin Czech Republic
Product Brand SIEMENS SIRIUS