3RW4443-6BC36

The Siemens SIRIUS 3RW4443-6BC36 is designed for 400-690V high-voltage power grids, with a control voltage of 115V AC. It shares the same current rating as the 6BC44, with a standard circuit current rating of 203A and an internal delta current rating of 352A. It is suitable for small and medium-sized motors with high-voltage power supply according to European standards.

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Product image of Siemens 3RW4443-6BC36 SIRIUS 3RW44 high-voltage soft starter

Product Positioning

The 3RW4443-6BC36 is a model in the SIRIUS 3RW44 series designed for 400-690V European high-voltage power grids. It is equipped with 115V AC control voltage and is suitable for small and medium-sized motors in high-voltage power supply production lines.

Core Product Advantages and Features

690V high voltage compatibility

The rated operating voltage covers 400-690V AC, which can be directly matched with the European standard 690V high-voltage motor power supply.

115V control voltage

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

Same frame current rating

It shares the same chassis and current carrying capacity as the 6BC44 version, and parts and spare parts are interchangeable.

Bypass connection built-in

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

project	Specification
model	3RW4443-6BC36
Rated operating voltage	400-690 V AC
Control power supply voltage	115 V AC, 50/60 Hz
Standard circuit rated current (400V/40°C, same frame specifications)	203 A
Rated current of internal delta circuit (same as frame specifications)	352 A
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
Applicable occasions	European standard 690V high voltage power supply for small and medium-sized motors

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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.

3RW4443-6BC35

The Siemens 3RW4443-6BC35 soft starter has a rated voltage of 400-600V AC, a standard wiring rating of 180A, and an internal delta wiring rating of 312A. It features a bypass contactor and motor overload protection, and is suitable for smooth start-stop of loads such as pumps and fans.

3RW4443-6BC34

The Siemens 3RW4443-6BC34 soft starter has a rated voltage of 200-460V AC, a standard wiring rating of 180A, and an internal delta wiring rating of 312A. It features a bypass contactor and overload protection design, making it suitable for reduced-voltage starting applications such as conveyor belts and compressors.