The Siemens 3RW5556-6HA14 is a high-capacity SIRIUS soft starter designed for controlling large three-phase motors in industrial applications. It supports a 200–480 V motor supply range, with a rated current of 1100 A, and features a 110–250 V AC control supply with screw terminals.
The soft starter provides controlled motor starting and stopping, helping reduce mechanical stress, current peaks and voltage disturbances associated with conventional direct-on-line motor starting.
The 3RW5556-6HA14 is designed for demanding motor-control applications where high motor current and controlled starting are required.
With a rated current of 1100 A, it is suitable for high-power industrial motors and large electrical drives when the application requirements match the device ratings.
Typical applications include:
The final selection should always be based on motor current, starting conditions, utilization category and application requirements.
The soft starter is designed for a 200–480 V motor supply range.
This wide operating range makes the 3RW5556-6HA14 suitable for compatible industrial motor-control systems operating at different three-phase voltages.
It can be considered for applications using compatible motor voltages within the specified range, subject to the motor, installation and system requirements.
One of the key characteristics of the 3RW5556-6HA14 is its 1100 A rated current.
The high current rating makes it suitable for large motors and high-power industrial equipment where conventional low-current soft starters would not be appropriate.
Potential applications include:
The appropriate motor duty and current rating must be confirmed before installation.
The product is specified with a 110–250 V AC control supply.
This control voltage is used for the control circuit of the soft starter and should be matched with the electrical control architecture of the installation.
It can be integrated into industrial control systems using compatible control-voltage arrangements.
The 3RW5556-6HA14 features screw terminals, providing a conventional and practical connection method for industrial control-panel installation.
Screw terminals can simplify wiring, commissioning and maintenance when installed according to the manufacturer's connection requirements.
A major advantage of a soft starter is the ability to control motor acceleration and deceleration rather than applying full line voltage immediately.
The 3RW5556-6HA14 can help provide:
The exact starting and stopping behaviour depends on the configured parameters and motor/application characteristics.
The Siemens 3RW5556-6HA14 is suitable for high-power industrial motor-control systems.
It can be integrated with other equipment such as:
This allows the soft starter to become part of a complete motor-control and automation system.
The Siemens 3RW5556-6HA14 can be used in various industrial applications, including:
For related Siemens industrial electrical and automation products, customers can explore the Siemens product range at SB Smart.
The 3RW5556-6HA14 is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals handling high-current motor-control applications.
Its combination of a 200–480 V motor voltage range, 1100 A current rating, 110–250 V AC control supply and screw terminals makes it suitable for demanding industrial motor-starting systems.
The Siemens 3RW5556-6HA14 is designed for high-current industrial motor-control applications, offering a 1100 A rating and compatibility with 200–480 V motor systems.
Its soft-starting capability can help reduce the stresses associated with direct motor starting, while the 110–250 V AC control supply and screw terminals support integration into industrial control-panel architectures.
It is a suitable solution for OEMs, panel builders and industrial facilities requiring controlled starting and stopping of large motors.
SB Smart supplies Siemens industrial electrical and automation products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and major cities across India.
Major delivery locations include:
It is a Siemens SIRIUS soft starter designed for high-current industrial motor-control applications.
The specified motor voltage range is 200–480 V.
The product is specified with a 1100 A rated current.
The specified control supply is 110–250 V AC.
Yes, the product specification includes screw terminals.
A soft starter controls the motor's starting and stopping process to help reduce starting current, mechanical stress and sudden acceleration effects.
It can be used for large pumps, compressors, conveyors, fans, process machinery, production equipment and other high-power industrial motor applications.
Yes. Its 1100 A current rating makes it suitable for high-current motor applications when the motor and application ratings are correctly matched.
Yes. It can form part of an industrial motor-control system alongside appropriate PLCs, protection devices, contactors and automation components.
You can explore the Siemens product range at SB Smart for Siemens SIRIUS soft starters, motor-control products and other industrial automation equipment.
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RW55 |
| Model Number | 3RW5556-6HA14 |
| Product Type | High Performance Soft Starter |
| Rated Current | 1100 A |
| Supply Voltage | 200–480 V AC |
| Control Voltage | 110–250 V AC |
| Phase | 3 Phase |
| Control Method | 3-phase controlled |
| Protection | Motor overload + thermal protection |
| Monitoring | Advanced diagnostics / condition monitoring |
| Bypass | Integrated |
| Mounting | Panel / screw mounting |
| Application | Ultra-heavy industrial motor control |
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