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Siemens SIRIUS 3RW4445-6BC46 Soft Starter (Phased Out)

Siemens SIRIUS 3RW4445-6BC46 Soft Starter (Phased Out).

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ManufacturerSiemens

Part number3RW4445-6BC46

Part Number 3RW4445-6BC46

Manufacturer Siemens

Series SIRIUS

Voltage 400-690 V AC

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Veteran-owned

CAGE: 9NK75

Smooth motor acceleration/deceleration Reduces mechanical and electrical stress High current and power rating Suitable for delta connection Screw terminals for connection Phased-out product with successor available

Product description

The Siemens SIRIUS 3RW4445-6BC46 is a soft starter designed to smoothly accelerate and decelerate three-phase motors. It provides controlled starting torque and reduces mechanical stress on machinery, as well as electrical stress on the power supply. This unit is rated for values at 690 V, 40 °C standard, with a current rating of 313 A and a power output of 315 kW.

This specific model is an inside-delta connection type, suitable for voltages up to 600 V. Please note that this product is phased out. The preferred successor model is the SIRIUS 3RW5545-6HA16. It is important to consider the successor for new installations or replacements.

Stanlo Automation, a veteran-owned surplus parts distributor, offers this Siemens SIRIUS soft starter. While this model is phased out, we may have remaining stock or can assist in identifying suitable alternatives. Trust Stanlo Automation for your industrial motor control component needs.

Technical specifications

Part Number	3RW4445-6BC46
Manufacturer	Siemens
Series	SIRIUS
Voltage	400-690 V AC
Current	313 A (at 690 V, 40°C standard)
Power	315 kW (at 690 V)
Connection	Inside-delta (up to 600 V)
Terminals	Screw terminals
Status	Phased-out product

Common applications

Motor Soft Starting

Pump Control

Fan Control

Conveyor Systems

Compressor Control

Industrial Machinery

Compatible systems

Three-phase induction motors Siemens S7 PLCs Industrial motor control panels

Also known as

Siemens SIRIUS 3RW4445 6BC46 3RW44456BC46 Siemens Soft Motor Starter

Replaces / compatible with

The preferred successor for the Siemens 3RW4445-6BC46 is the SIRIUS 3RW5545-6HA16. This soft starter replaces direct-on-line starters for smoother motor operation.

Technical note

Expert tip

As this is a phased-out product, verify the availability of spare parts and support before implementing it in critical applications; the 3RW5 series offers updated features.

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Frequently asked questions

What is the successor to the Siemens 3RW4445-6BC46 SIRIUS soft starter?

The Siemens 3RW4445-6BC46 is a phased-out product. The preferred successor is the SIRIUS 3RW5545-6HA16. When replacing this unit, it is recommended to consider the newer 3RW5 series for optimal performance and availability.