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Siemens SIRIUS 3RW4453-6BC44 Soft Starter - 551A Standard

Siemens SIRIUS 3RW4453-6BC44 soft starter, 551A standard rating.

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ManufacturerSiemens

Part number3RW4453-6BC44

Standard Rating (400V, 40°C) 551 A, 315 kW

Inside-Delta Rating 954 A, 560 kW

Voltage Range 200-460 V AC

Terminals Screw

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12-month warranty

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Same-day dispatch

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Worldwide delivery

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Veteran-owned

CAGE: 9NK75

High Starting Current Capability Controlled Motor Acceleration Wide Operating Voltage Screw Terminal Connections Reduced Mechanical Stress

Product description

The Siemens SIRIUS 3RW4453-6BC44 is a high-performance soft starter designed for smooth and controlled motor acceleration. It offers impressive starting capabilities, with standard ratings of 551A and 315kW at 400V and 40°C, and within-delta ratings of 954A and 560kW. The unit operates within a voltage range of 200-460V AC and features convenient screw terminals for connections.

This soft starter is suitable for a wide range of industrial applications where controlled motor starting is critical to reduce mechanical stress and electrical load. Common uses include pumps, fans, compressors, and conveyors in sectors like material handling, water treatment, and manufacturing.

Stanlo Automation, a veteran-owned distributor, offers surplus Siemens SIRIUS soft starters like the 3RW4453-6BC44. Secure reliable automation components and benefit from our commitment to quality and customer satisfaction.

Technical specifications

Standard Rating (400V, 40°C)	551 A, 315 kW
Inside-Delta Rating	954 A, 560 kW
Voltage Range	200-460 V AC
Terminals	Screw
Product Status	Phased-out

Common applications

Pump Control

Fan Control

Compressor Starting

Conveyor Systems

Material Handling

Industrial Machinery

Compatible systems

Compatible with standard industrial motor control systems and power distribution.

Also known as

SIRIUS Soft Starter Siemens Motor Starter 3RW4453 Series Soft Starter 551A

Replaces / compatible with

This product is phased out. The preferred successor is the Siemens SIRIUS 3RW5548-6HA14.

Technical note

Expert tip

When replacing the 3RW4453-6BC44, ensure the successor 3RW5548-6HA14 is correctly sized for the motor load and that all wiring adheres to current safety standards.

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Frequently asked questions

What is the successor to the Siemens 3RW4453-6BC44 SIRIUS soft starter?

The Siemens 3RW4453-6BC44 SIRIUS soft starter is a phased-out product. Its preferred successor is the Siemens SIRIUS 3RW5548-6HA14, which offers updated features and support.