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Siemens SIRIUS 3RW3047-1BB14 Soft Starter - 106A, 55 kW

Siemens SIRIUS 3RW3047-1BB14 S3 Soft Starter - 106A, 55 kW

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ManufacturerSiemens

Part number3RW3047-1BB14

Frame Size S3

Rated Operational Current 106A (at 40°C)

Motor Power 55 kW (at 400V) / 30 kW (at 230V)

Supply Voltage 200-480V AC

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Soft starting and ramp-down Integrated bypass contact system Thyristor power electronics Screw terminals Compact design

Product description

The Siemens SIRIUS 3RW3047-1BB14 is a soft starter designed for smooth motor acceleration and deceleration in industrial applications. This S3 size starter has a rated operational current of 106A at 40°C and can handle motors up to 55 kW at 400V (30 kW at 230V). It operates with a supply voltage range of 200-480V AC and features a control supply voltage of 110-230V AC/DC, utilizing screw terminals.

This soft starter incorporates thyristor power electronics with an integrated bypass contact system, reducing heat dissipation during run and improving efficiency. It is suitable for applications such as pumps, fans, and conveyor drives that require a compact and straightforward motor starting solution. Note that it does not include intrinsic motor overload protection, requiring an external device for such functions.

Stanlo Automation offers the Siemens 3RW3047-1BB14, a reliable component for your industrial automation needs. As a veteran-owned surplus parts distributor, we prioritize quality and customer satisfaction.

Technical specifications

Frame Size	S3
Rated Operational Current	106A (at 40°C)
Motor Power	55 kW (at 400V) / 30 kW (at 230V)
Supply Voltage	200-480V AC
Control Voltage	110-230V AC/DC
Connection Type	Screw Terminals
Bypass	Integrated Bypass Contact System
IP Rating	IP00

Common applications

Pump control

Fan control

Compressor control

Conveyor drives

Material handling

Compatible systems

Compatible with standard three-phase asynchronous motors.

Also known as

SIRIUS 3RW30 Soft Starter Siemens 106A soft starter

Replaces / compatible with

This soft starter is a direct replacement for older versions or provides an upgrade path for motor control systems.

Technical note

Expert tip

Requires external motor protection as the integrated bypass does not offer overload protection.

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Frequently asked questions

Does the Siemens 3RW3047-1BB14 include motor overload protection?

No, the Siemens 3RW3047-1BB14 soft starter does not have intrinsic motor overload protection. An external motor protection relay or overload device is required for overload and locked-rotor protection.