3RW5554-6HA14

The 3RW5554-6HA14 is one of the highest current-rated soft starters in the Siemens SIRIUS 3RW55 series. It is rated at 840 amps, uses screw terminals, and has a control voltage of 110 to 250 volts AC, making it suitable for large motor applications.

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Siemens 3RW5554-6HA14 SIRIUS 3RW55 soft starter 840A

Product Positioning

The 3RW5554-6HA14 is one of the models with the highest rated current in the SIRIUS 3RW55 high-current soft starter series, rated at 840 amps, which can provide progressive start-stop control for large three-phase induction motors.

Core Product Advantages and Features

High current carrying capacity specifications

With a rated operating current of 840 amps, it can directly meet the high starting current requirements of large motors.

Wide main circuit voltage

The main circuit supports 200 to 480 volt AC, covering a variety of common industrial power distribution system specifications.

Flexible communication extension

Optional PROFINET, PROFIBUS or Modbus TCP communication modules can be connected in series with a host monitoring system.

Screw terminal wiring

The main circuit uses a screw terminal design, which facilitates on-site wiring and maintenance of high-current cables.

project	Specification
Product Type	SIRIUS 3RW55 High Current Soft Starter
Rated current	840 A (40°C)
Main circuit voltage	200-480 V AC
Control voltage	110-250 V AC
Power reference value	Approximately 450 kW at 400V (direct wiring)
Terminal type	Screw terminals
Protection level	IP00 (IP20 can be achieved by adding a faceplate)
net weight	Approximately 75 kilograms
Communication expansion	Optional PROFINET/PROFIBUS/Modbus TCP module
Product Brand	SIEMENS SIRIUS

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