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Siemens 3RW4447-6BC35 SIRIUS Soft Starter - 385A (575V)

Siemens SIRIUS soft starter, 385A (575V) standard rating.

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ManufacturerSiemens

Part number3RW4447-6BC35

Manufacturer Siemens

Series SIRIUS 3RW44

Part Number 3RW4447-6BC35

Standard Rating (575V, 50°C) 385A

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Smooth Motor Acceleration Reduced Inrush Current Motor and System Protection Screw Terminals High Performance

Product description

The Siemens 3RW4447-6BC35 is a SIRIUS soft starter designed for motor control. Its standard rating at 575V and 50°C is 385A, with an inside-delta rating of 667A. It operates on 400-600V AC power and requires 115V AC for control, featuring screw terminals. Please note this is a phased-out product with the preferred successor being the 3RW5547-6HA16.

This soft starter is suitable for applications requiring smooth acceleration of three-phase motors, reducing mechanical stress and electrical inrush current. Industries like heavy machinery, material handling, and water treatment commonly utilize such devices to protect motors and driven equipment from shock loads.

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Technical specifications

Manufacturer	Siemens
Series	SIRIUS 3RW44
Part Number	3RW4447-6BC35
Standard Rating (575V, 50°C)	385A
Inside-Delta Rating	667A
Voltage	400-600V AC
Control Voltage	115V AC
Terminals	Screw
Status	Phased-out Product

Common applications

Heavy Machinery

Material Handling

Pump Control

Fan Control

Conveyor Systems

Industrial Motors

Compatible systems

Three-phase AC Motors Standard industrial power systems

Also known as

Siemens SIRIUS Soft Starter 3RW44 Soft Starter 385A Soft Starter

Replaces / compatible with

Phased-out product. Preferred successor is Siemens SIRIUS 3RW5547-6HA16.

Technical note

Expert tip

As a phased-out product, ensure availability of spare parts or consider migrating to the recommended successor, the 3RW55 series, for long-term support and potential upgrades.

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Frequently asked questions

What is the successor to the Siemens 3RW4447-6BC35 soft starter?

The Siemens 3RW4447-6BC35 is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5547-6HA16. This indicates an updated model with potentially enhanced features or improved technology.