3RW4073-2BB44
The 3RW4073-2BB44 is a larger capacity soft starter model in the SIRIUS series, suitable for three-phase motors with high power requirements. It achieves voltage ramp starting through thyristor phase control and has built-in bypass contacts and overload protection. It is commonly used in large industrial loads such as pumps, fans, and compressors.
Product Positioning
The 3RW4073-2BB44 is a soft starter model from the Siemens SIRIUS 3RW40 series. It is suitable for starting and controlling three-phase motors with high power requirements. It uses a voltage ramp method to smoothly accelerate the motor to its rated speed.
Core Product Advantages and Features
High-capacity soft-start design
It belongs to the 3RW4073 series of soft starters suitable for motors with high power requirements.
Voltage ramp control
The motor voltage rises smoothly by using thyristor phase control, reducing the starting surge current.
Built-in bypass contact
Once the system reaches full speed, it is powered by the bypass contact to reduce losses caused by prolonged thyristor conduction.
Overload protection function
Built-in motor thermal overload protection monitors the motor's operating status to reduce the risk of abnormalities.
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