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Siemens SIRIUS 3RW3028-1BB14 Soft Starter - 38A, 18.5 kW

Siemens SIRIUS 3RW3028-1BB14 S0 Soft Starter - 38A, 18.5kW.

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ManufacturerSiemens

Part number3RW3028-1BB14

Type SIRIUS Soft Starter

Size S0

Rated Current 38 A

Max Motor Power 18.5 kW (400V)

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Smooth motor start-up Reduces inrush current Sized for 38A continuous load 18.5 kW motor capacity at 400V Screw terminal connections SIRIUS design

Product description

The Siemens SIRIUS 3RW3028-1BB14 is a size S0 soft starter designed for smooth motor acceleration. It is rated for a continuous current of 38 A and can handle motor power up to 18.5 kW at 400 V, with an ambient temperature rating of 40 °C. The control voltage range is 200-480 V AC, with a separate auxiliary control voltage of 110-230 V AC/DC.

This soft starter is ideal for applications where controlled motor start-up is necessary to reduce mechanical stress and electrical inrush currents. It is commonly used in pump, fan, and conveyor systems to provide gentle acceleration and deceleration.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RW3028-1BB14. Trust us for reliable industrial automation components and efficient service to keep your operations running smoothly.

Technical specifications

Type	SIRIUS Soft Starter
Size	S0
Rated Current	38 A
Max Motor Power	18.5 kW (400V)
Control Voltage	200-480 V AC
Auxiliary Voltage	110-230 V AC/DC
Terminals	Screw

Common applications

Pump control

Fan control

Conveyor systems

Compressor starters

Industrial machinery

Compatible systems

Standard AC induction motors

Also known as

Siemens Soft Starter S0 SIRIUS 3RW30 3RW30 Soft Starter

Replaces / compatible with

Replaces DOL starters for applications requiring soft start functionality to reduce mechanical shock and electrical load. Compatible with many SIRIUS motor control components.

Technical note

Expert tip

Ensure the control voltage supply (110-230 V AC/DC) is correctly wired for proper soft starter operation.

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Frequently asked questions

What is the maximum motor power for the Siemens 3RW3028-1BB14 soft starter?

The Siemens 3RW3028-1BB14 soft starter is rated for a maximum motor power of 18.5 kW at a 400 V supply voltage.