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Siemens 3RW4447-2BC46 SIRIUS Soft Starter (Phased Out)

Siemens 3RW4447-2BC46 SIRIUS soft starter (432A, 690V). Phased out.

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ManufacturerSiemens

Part number3RW4447-2BC46

Current Rating 432 A (at 690 V, 40 °C)

Power Rating 400 kW (at 690 V)

Voltage 400-690 V AC

Control Voltage 230 V AC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Controlled Motor Start Reduces Mechanical Stress Prevents Voltage Dips High Current Rating (432A) Suitable for 690V Systems

Product description

The Siemens 3RW4447-2BC46 is a SIRIUS soft starter designed for controlled motor acceleration. Rated for a maximum current of 432A and a power output of 400kW at 690V (40°C), it is suitable for high-power motor applications. Note that this is a phased-out product, with the SIRIUS 3RW5 series being its successor.

This soft starter is ideal for reducing mechanical stress on machinery during startup, preventing voltage dips, and improving system efficiency. It finds applications in pumps, fans, compressors, and conveyors where smooth motor starts are crucial.

Stanlo Automation, a veteran-owned surplus industrial automation parts distributor, offers the Siemens 3RW4447-2BC46. Even for phased-out items, we aim to provide necessary components for maintenance and repair.

Technical specifications

Current Rating	432 A (at 690 V, 40 °C)
Power Rating	400 kW (at 690 V)
Voltage	400-690 V AC
Control Voltage	230 V AC
Series	SIRIUS 3RW44
Status	Phased-out

Common applications

Pump Control

Fan Control

Compressor Starting

Conveyor Systems

Industrial Motor Control

Compatible systems

Suitable for motors requiring controlled starting on 400-690V AC systems.

Also known as

Siemens 3RW44 Soft Starter SIRIUS 432A Soft Starter

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5547-2HA16.

Technical note

Expert tip

As the 3RW4447-2BC46 is phased out, ensure spare parts availability or plan migration to the successor series (3RW5) for long-term support.

What happens next?

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Frequently asked questions

What is the successor product for the Siemens 3RW4447-2BC46 soft starter?

The Siemens 3RW4447-2BC46 is a phased-out product. The preferred successor model is the SIRIUS 3RW5547-2HA16, which offers updated features and technology for soft starter applications.