3RW4444-6BC35

The Siemens SIRIUS 3RW4444-6BC35 is compatible with 400-600V high-voltage power grids. The standard circuit rated current is 215A, and the internal delta current is 372A. Under 575V, the standard current is about 200hp, and the internal delta current is about 350hp. The control voltage is 115V AC, making it suitable for high-voltage power supply heavy industrial production lines.

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Product image of Siemens 3RW4444-6BC35 SIRIUS 3RW44 high-voltage soft starter

Product Positioning

The 3RW4444-6BC35 is a model in the SIRIUS 3RW44 series designed for 400-600V high-voltage power grids. It is equipped with a 115V AC control voltage and is suitable for heavy industrial applications requiring high-voltage power supply.

Core Product Advantages and Features

Applicable to high voltage power grids

The rated operating voltage covers 400-600V AC, which can be directly used with high-voltage motor power supplies such as 575V.

215A rated current

With an internal delta connection, the current can reach 372A, meeting the requirements of medium and large high-voltage motors.

115V control voltage

The control circuit uses 115V AC, which facilitates integration with existing low-voltage control systems.

Bypass connection built-in

After startup, it automatically switches to bypass operation to reduce thyristor heating and wear.

project	Specification
model	3RW4444-6BC35
Standard circuit rated current (50°C)	215 A
Rated current of internal delta circuit (50°C)	372 A
Rated power (575V, standard)	About 200 hp
Rated power (575V, internal delta)	About 350 hp
Rated operating voltage	400-600 V AC
Control power supply voltage	115 V AC, 50/60 Hz
Protection level	IP00 (IP20 can be achieved by adding a terminal cover)
Installation method	Screw fixing
Extreme number	3P
Built-in functions	Bypass contact system, thermal resistance motor overload protection

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The Siemens SIRIUS 3RW4444-6BC44 standard circuit has a rated current of 250A, 433A for internal delta connection, a power of 132kW at 400V, and 250kW for internal delta connection. The operating voltage is 200-460V AC, and the control voltage is 230V AC. It is suitable for reduced voltage starting of medium-sized conveyor belts.

3RW4444-6BC34

The Siemens SIRIUS 3RW4444-6BC34 is the 115V control voltage version of the 3RW4444, with a rated current of 215A, 75hp at 230V and 150hp at 460V, and an operating voltage of 200-460V AC. It features screw terminal wiring and a built-in bypass contact.

3RW4443-6BC44

The Siemens SIRIUS 3RW4443-6BC44 standard circuit has a rated current of 203A, 352A for internal delta connection, a power of 110kW at 400V, and 200kW for internal delta connection. It operates at 200-460V AC and controls at 230V AC, making it suitable for reduced-voltage starting of small and medium-sized motors.