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Siemens SIRIUS Soft Starter 3RW4454-6BC45

Siemens SIRIUS Soft Starter - 615A / 400kW

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ManufacturerSiemens

Part number3RW4454-6BC45

Manufacturer Siemens

Series SIRIUS

Part Number 3RW4454-6BC45

Input Voltage 400-600V AC

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Integrated Bypass Contact System Thyristor Technology Controlled Motor Starting Overload Protection Motor Brake Output Screw Terminals

Product description

The Siemens SIRIUS soft starter, model 3RW4454-6BC45, is designed for smooth and controlled starting of three-phase motors.

This soft starter is rated for an input voltage of 400-600V AC (with 230V AC control voltage) and features screw terminals. At 500V, it provides a standard current rating of 615A and a power rating of 400kW. For inside-delta connections, it handles 1065A and 710kW. It includes an integrated bypass contact system and thyristors for efficient operation.

While this product is phased out, Stanlo Automation offers reliable surplus components. The preferred successor is the SIRIUS 3RW5552-6HA16. Ideal for industrial applications requiring controlled motor acceleration, source your automation needs from Stanlo.

Technical specifications

Manufacturer	Siemens
Series	SIRIUS
Part Number	3RW4454-6BC45
Input Voltage	400-600V AC
Control Voltage	230V AC
Standard Current (500V)	615 A
Standard Power (500V)	400 kW
Inside-Delta Current (500V)	1065 A
Inside-Delta Power (500V)	710 kW
Terminals	Screw

Common applications

Industrial Motor Control

Pump Systems

Fan Systems

Conveyor Belts

Manufacturing Equipment

Heavy Machinery

Compatible systems

Three-phase AC motors Industrial control panels Motor control centers

Also known as

Siemens 3RW44 SIRIUS Soft Starter Soft Start Controller

Replaces / compatible with

This product is phased out, with the SIRIUS 3RW5 series being its successor. Specifically, the 3RW5552-6HA16 is the preferred replacement.

Technical note

Expert tip

Ensure proper wiring and de-rating according to ambient temperature and motor start frequency requirements for optimal performance and longevity.

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Frequently asked questions

What are the standard and inside-delta current ratings for the Siemens 3RW4454-6BC45 soft starter?

The Siemens 3RW4454-6BC45 soft starter has a standard current rating of 615A (400kW) at 500V and an inside-delta current rating of 1065A (710kW) at 500V.