3RW4444-6BC44

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.

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Siemens 3RW4444-6BC44 SIRIUS 3RW44 soft starter product image

Product Positioning

The 3RW4444-6BC44 belongs to the SIRIUS 3RW44 series of mid-range current motors, which are suitable for smooth start-up and stop control of medium-sized motors, reducing mechanical and electrical shocks during startup.

Core Product Advantages and Features

Moderate current specifications

The standard circuit has a rated current of 250A, while the internal delta connection can reach 433A, covering the needs of common medium-sized motors.

230V control circuit

The control voltage is 230V AC, which is highly compatible with the control power supply commonly used in Taiwanese factories.

Bypass connection saves energy

After startup, switch to bypass operation to reduce thyristor heating and save power.

thermal resistor overload protection

An integrated thermal resistance evaluation mechanism is used to continuously monitor motor temperature and prevent overheating.

project	Specification
model	3RW4444-6BC44
Standard circuit rated current (400V/40°C)	250 A
Rated current of internal delta circuit	433 A
Standard circuit rated power (400V)	132 kW
Rated power of internal delta circuit (400V)	250 kW
Rated operating voltage	200-460 V AC
Control power supply voltage	230 V AC, 50/60 Hz
Rated insulation voltage	690 V
Protection level	IP00 (IP20 can be achieved by adding a terminal cover)
Dimensions of the outer casing (width x height x depth)	210 x 230 x 298 mm
net weight	Approximately 11.23 kg
Installation method	Screw fixing

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The Siemens SIRIUS 3RW4445-6BC34 is the 115V control voltage version of the 3RW4445, with a rated current of 280A, 100hp at 230V and 200hp at 460V, and an operating voltage of 200-460V AC. It features screw terminal wiring and a built-in bypass contact.

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.

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.