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Siemens 3RW3055-2TB05 Soft Starter - 55A

Siemens Sirius 3RW30 soft starter for smooth motor starting.

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ManufacturerSiemens

Part number3RW3055-2TB05

Rated operational current 55 A

Voltage 200-480 V AC

Frequency 50/60 Hz

Control voltage 24 V AC/DC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Soft start function Integrated bypass contactor Motor overload protection Reduced mechanical stress Lower electrical surge Compact design

Product description

The Siemens 3RW3055-2TB05 is a Sirius 3RW30 soft starter designed to reduce the starting current of electric motors, thereby limiting mechanical stress and grid load. It features a rated operational current of 55A and supports a voltage range of 200-480V AC. This model is ideal for soft-starting three-phase asynchronous motors.

This soft starter is commonly used in applications requiring smooth motor acceleration, such as conveyor systems, pumps, fans, and compressors. It's suitable for various industrial environments where minimizing mechanical shock and electrical surge during motor startup is crucial. Industries benefiting from this technology include material handling, water treatment, and general manufacturing.

Source your Siemens 3RW3055-2TB05 from Stanlo Automation, a veteran-owned distributor offering a wide selection of industrial automation surplus parts. We provide reliable components and efficient service to keep your operations running smoothly.

Technical specifications

Rated operational current	55 A
Voltage	200-480 V AC
Frequency	50/60 Hz
Control voltage	24 V AC/DC
Size	S3
Mounting	DIN rail
Protection class	IP20

Common applications

Conveyor systems

Pump control

Fan control

Compressor startups

General motor starting

Material handling equipment

Compatible systems

Three-phase asynchronous motors

Also known as

Siemens Sirius 3RW30 soft starter 3RW30552TB05 Siemens motor starter

Replaces / compatible with

This unit is designed as a direct replacement or upgrade for previous generations of Siemens soft starters within the same series.

Technical note

Expert tip

Ensure the control voltage is correctly wired to 24V AC/DC for proper operation of the 3RW3055-2TB05.

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Frequently asked questions

What are the main benefits of using the Siemens 3RW3055-2TB05 soft starter?

The Siemens 3RW3055-2TB05 soft starter reduces motor starting current, minimizing mechanical stress on equipment and electrical surges on the power grid. This leads to increased lifespan for motors and reduced wear on connected machinery.