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Siemens SIRIUS 3RW55 Soft Starter - 1100A

Siemens SIRIUS 3RW55 soft starter, 200-690V, 1100A.

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ManufacturerSiemens

Part number3RW5556-2HA16

Part Number 3RW5556-2HA16

Manufacturer Siemens

Series SIRIUS 3RW55

Voltage 200-690 V

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High current rating (1100A) Wide voltage range (200-690V) Smooth motor start/stop Spring-type terminals SIRIUS system compatibility Reduced mechanical stress

Product description

The Siemens SIRIUS 3RW5556-2HA16 is a high-performance soft starter designed for smooth and controlled acceleration and deceleration of three-phase induction motors. It operates within a voltage range of 200-690V and can handle motor currents up to 1100A. The control voltage is 110-250V AC, and it features convenient spring-type terminals for quick and secure connections.

This soft starter is ideal for applications where high starting torque is required or where reducing mechanical stress on the motor and connected equipment is crucial. It is commonly used in heavy-duty industrial applications such as large pumps, compressors, crushers, and conveyor systems, helping to extend equipment life and improve operational efficiency.

Stanlo Automation, a veteran-owned distributor of surplus industrial parts, offers the Siemens SIRIUS 3RW5556-2HA16. We provide cost-effective solutions for your automation needs, ensuring you receive reliable components from a trusted source.

Technical specifications

Part Number	3RW5556-2HA16
Manufacturer	Siemens
Series	SIRIUS 3RW55
Voltage	200-690 V
Current	1100 A
Control Voltage	110-250 V AC
Terminals	Spring-type

Common applications

Large pump systems

Compressor control

Conveyor belts

Crushers

Industrial machinery

Motor control

Compatible systems

Siemens SIRIUS motor control components Three-phase induction motors

Also known as

Siemens Sirius Soft Starter 3RW55 Soft Starter 1100A Soft Starter

Replaces / compatible with

Replaces direct-on-line (DOL) starters for smoother motor starts and can be used in place of older soft starter models.

Technical note

Expert tip

Proper heat dissipation is critical for this high-current soft starter; ensure adequate enclosure ventilation or heat sinks are in place.

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Frequently asked questions

What is the control voltage range for the Siemens SIRIUS 3RW5556-2HA16 soft starter?

The Siemens SIRIUS 3RW5556-2HA16 soft starter operates with a control voltage range of 110-250V AC. This allows for flexible integration into various control system architectures.