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Siemens 3RW4028-1BB14 SIRIUS Soft Starter S0 - 38A, 18.5kW

Siemens SIRIUS S0 Soft Starter, 38A, 18.5kW, 200-480V AC.

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ManufacturerSiemens

Part number3RW4028-1BB14

Size S0

Rated Operational Current 38 A

Motor Power 18.5 kW at 400 V

Control Voltage 200-480 V AC

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Soft starting for motors S0 frame size Wide control voltage range 38A continuous current 18.5kW motor power Screw terminals

Product description

The Siemens 3RW4028-1BB14 is a SIRIUS soft starter in size S0, designed for smooth motor acceleration. It features a rated operational current of 38 A and can handle a motor power of 18.5 kW at 400 V. The device operates with a wide control voltage range of 200-480 V AC and a separate coil voltage of 110-230 V AC/DC, utilizing screw terminals for secure connections.

This soft starter is ideal for applications requiring reduced mechanical stress on machinery, such as conveyor systems, pumps, and fans, where soft starting prevents jolts and extends equipment life. It is commonly used in industrial automation, manufacturing, and process control environments.

Stanlo Automation, a veteran-owned business, offers a reliable source for this Siemens soft starter. We provide surplus industrial automation parts, ensuring you get quality components like the 3RW4028-1BB14 with the assurance of a dedicated supplier.

Technical specifications

Size	S0
Rated Operational Current	38 A
Motor Power	18.5 kW at 400 V
Control Voltage	200-480 V AC
Coil Voltage	110-230 V AC/DC
Terminals	Screw

Common applications

Pump control

Fan control

Conveyor systems

Compressor control

Industrial machinery

HVAC systems

Compatible systems

Designed for use with standard AC induction motors

Also known as

SIRIUS Soft Starter S0 Siemens 3RW40 Soft Starter 38A Soft Starter Siemens

Replaces / compatible with

This soft starter is part of the Siemens SIRIUS 3RW40 series, designed for a wide range of motor control applications.

Technical note

Expert tip

Ensure correct wiring for the 200-480V AC control circuit and the 110-230V AC/DC coil to prevent damage and ensure proper function.

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Frequently asked questions

What is the maximum motor power for the Siemens 3RW4028-1BB14 soft starter?

The Siemens 3RW4028-1BB14 soft starter is rated for a maximum motor power of 18.5 kW when operating at a 400 V supply voltage. This capacity makes it suitable for a variety of medium-sized industrial motors.