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Siemens 3RW4075-6BB44 SIRIUS Soft Starter - Phased Out

Siemens 3RW4075-6BB44 SIRIUS soft starter (356A, 200kW) - Phased Out.

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ManufacturerSiemens

Part number3RW4075-6BB44

Type Soft Starter

Series SIRIUS 3RW40

Current Rating 356 A

Power Rating 200 kW / 400 V

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12-month warranty

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Same-day dispatch

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Veteran-owned

CAGE: 9NK75

Smooth motor starting Reduces mechanical stress Limits inrush current Screw terminal connections SIRIUS design

Product description

The Siemens 3RW4075-6BB44 is a SIRIUS soft starter rated for 356A and 200kW at 400V. It operates with a control voltage range of 200-460V AC and features screw terminals. Please note that this is a phased-out product, with the successor being the SIRIUS 3RW5 series, specifically the 3RW5075-6AB14 model.

This soft starter was designed to provide smooth and controlled starting of three-phase motors, reducing mechanical stress and electrical inrush currents. It was commonly used in applications such as conveyor systems, pumps, fans, and compressors where a gentle motor start-up is required.

Stanlo Automation, a veteran-owned supplier of industrial surplus parts, offers this Siemens SIRIUS soft starter. While it is a phased-out model, we can help you find this or suitable replacement parts to maintain your equipment.

Technical specifications

Type	Soft Starter
Series	SIRIUS 3RW40
Current Rating	356 A
Power Rating	200 kW / 400 V
Control Voltage	200-460 V AC
Terminals	Screw terminals
Status	Phased-out product
Successor	3RW5075-6AB14

Common applications

Conveyor Systems

Pump Control

Fan Control

Compressor Control

General Motor Starting

Compatible systems

Three-phase AC motors

Also known as

Siemens SIRIUS 3RW40 Soft Starter 3RW40756BB44

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5075-6AB14.

Technical note

Expert tip

When replacing with the successor 3RW5075-6AB14, verify wiring and enclosure dimensions as minor modifications may be necessary.

What happens next?

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Frequently asked questions

What is the recommended successor for the Siemens 3RW4075-6BB44 soft starter?

The Siemens 3RW4075-6BB44 is a phased-out product. The preferred successor recommended by Siemens is the SIRIUS 3RW5075-6AB14.