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Siemens 3RW4073-6BB35 SIRIUS Soft Starter, 205A, 200HP

Siemens 3RW4073-6BB35 SIRIUS Soft Starter, 205A.

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ManufacturerSiemens

Part number3RW4073-6BB35

Type Soft Starter

Series SIRIUS 3RW40

Current Rating 205 A

Motor Power 200 hp @ 575 V

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Smooth Motor Acceleration Reduced Inrush Current Motor Protection Features Screw Terminals High Power Rating

Product description

The Siemens 3RW4073-6BB35 is a SIRIUS soft starter designed for smooth motor acceleration. It has a rated operational current of 205A and is suitable for motors up to 200 hp at 575V, with a temperature rating of 50°C. The soft starter operates on an AC supply voltage range of 400-600V AC and features screw terminals for connections.

This soft starter is used to reduce the mechanical stress on machinery and electrical load during motor start-up by limiting the inrush current. Applications include pumps, fans, compressors, and conveyors in industries like water treatment, HVAC, and general manufacturing where smooth start-up is critical.

Please note that the 3RW4073-6BB35 is a phased-out product, with the SIRIUS 3RW5 series being its successor. Stanlo Automation, a veteran-owned surplus parts distributor, may have this or compatible successor models available. Contact us for your motor control needs.

Technical specifications

Type	Soft Starter
Series	SIRIUS 3RW40
Current Rating	205 A
Motor Power	200 hp @ 575 V
Voltage	400-600 V AC
Temperature Rating	50 °C
Terminals	Screw

Common applications

Pump Control

Fan Control

Compressor Start-up

Conveyor Systems

HVAC Systems

Industrial Motor Control

Compatible systems

Designed for 3-phase AC motors within the specified voltage and power range. Connects to standard control circuits and power wiring.

Also known as

SIRIUS 3RW40 205A Soft Starter Siemens Motor Soft Starter 3RW4073 3RW40736BB35

Replaces / compatible with

This is a phased-out product. The preferred successor is the SIRIUS 3RW5 series, specifically type 3RW5073-6AB15.

Technical note

Expert tip

As a phased-out product, ensure availability of spare parts or consider upgrading to the successor SIRIUS 3RW5 series for long-term support.

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Frequently asked questions

What is the successor model for the Siemens 3RW4073-6BB35 SIRIUS soft starter?

The Siemens 3RW4073-6BB35 is a phased-out product. Its preferred successor is within the SIRIUS 3RW5 series, with the specific type being the 3RW5073-6AB15.