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Siemens SIRIUS 3RW5552 Soft Starter - 630A, 480V

Siemens SIRIUS 3RW5552 Soft Starter, 630A, 200-480V AC, with screw terminals.

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ManufacturerSiemens

Part number3RW5552-6HA14

Series SIRIUS 3RW55

Voltage 200-480V AC

Current 630A

Control Voltage 110-250V AC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Smooth Motor Start Reduced Mechanical Stress Integrated Bypass Adjustable ramp time Overload Protection Screw Terminals

Product description

The Siemens SIRIUS 3RW5552-6HA14 is a high-performance soft starter designed for controlled starting of three-phase motors. It operates within a voltage range of 200-480V AC and can handle a maximum current of 630A. The control voltage for this unit is 110-250V AC, and it features convenient screw terminals for electrical connections.

This soft starter is crucial for applications where smooth motor acceleration is required to reduce mechanical stress and electrical load on the power supply. It is widely used in pumps, fans, compressors, conveyors, and other machinery to extend equipment life and improve system efficiency.

Stanlo Automation, a veteran-owned company specializing in surplus industrial parts, offers the Siemens 3RW5552-6HA14. We provide reliable components with competitive pricing, ensuring your industrial operations benefit from quality Siemens technology without the premium cost.

Technical specifications

Series	SIRIUS 3RW55
Voltage	200-480V AC
Current	630A
Control Voltage	110-250V AC
Terminals	Screw
Motor Power	Up to 315 kW (400V)

Common applications

Pump Control

Fan Control

Compressor Starting

Conveyor Systems

Crushers

Industrial Machinery

Compatible systems

Three-Phase Motors Industrial Control Panels PLC Systems

Also known as

Siemens SIRIUS Soft Starter 3RW55 Soft Starter

Replaces / compatible with

The 3RW55 series offers advanced soft-start capabilities, often replacing traditional direct-on-line starters or Star-Delta starters for improved performance and reduced stress.

Technical note

Expert tip

Ensure proper sizing of the soft starter based on motor full load current and starting duty cycle for optimal performance and longevity.

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Frequently asked questions

What is the maximum motor power that the Siemens 3RW5552-6HA14 soft starter can handle?

The Siemens SIRIUS 3RW5552-6HA14 soft starter is rated for 630A at 200-480V AC. This typically corresponds to a maximum motor power of up to 315 kW at 400V, providing smooth and controlled acceleration for large industrial motors.