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Siemens SIRIUS 3RW Soft Starter, , 90 kW, 200 → 480 V ac, 3 Phase

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£1,559.30

(exc. VAT)

£1,871.16

(inc. VAT)

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  • Plus 999,999,997 unit(s) shipping from 17 November 2025
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RS Stock No.:
200-3915
Mfr. Part No.:
3RW5055-6AB14
Brand:
Siemens
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Brand

Siemens

Power Rating

90 kW

Motor Starter Type

Soft Start

Range

SIRIUS 3RW

Voltage Rating

200 → 480 V ac

Phase

3

Current Rating

143 A

IP Rating

IP00

Motor Starter Functionality

Automatic, Manual

Overall Length

198mm

Enclosure

No

Overall Width

120mm

Better World Product

Yes

Overall Depth

249mm

Series

3RW50

Mounting Type

Chassis Mount

Better World Claim

Concentrated or compact solution, Saves energy

Hazardous Area Certification

ATEX, IECEx

Standards Met

CE

RoHS Status: Exempt

COO (Country of Origin):
CZ

Siemens 3RW50 Series Soft Starter, 90 kW Power Rating, 143A Current - 3RW5055-6AB14


This soft starter belongs to the SIRIUS range. It is designed for controlling three-phase motors efficiently, with a power rating of 90kW and accommodating a voltage range of 200 to 480 V. The compact dimensions of 198mm x 120mm x 249mm make it suitable for various installation requirements. Its ability to handle a current rating of 143A makes it ideal for demanding applications in automation and control.

Features & Benefits


• Automatic and manual motor starter functionality enhances versatility
• Integrated bypass contact system reduces energy loss during operation
• Supports both digital and analogue outputs for flexible monitoring
• Compatible with multiple communication protocols for seamless integration

Applications


• Utilised in industrial automation systems for motor control
• Effective in HVAC systems to manage fan and pump operations
• Used for soft starting of conveyor belts in production lines
• Ideal for requiring precise motor protection and control

What types of motors can be used with this soft starter?


This soft starter is compatible with three-phase motors, supporting various power ratings and allowing optimal control for a wide range of motor types.

How does the adjustable current limitation benefit system performance?


The adjustable current limitation allows for a customised response to motor start-up conditions, preventing overloads and extending the lifespan of both the motor and the drive system.

What are the environmental conditions under which this soft starter can operate?


This device can function efficiently in ambient temperatures ranging from -25°C to +60°C and can be installed up to 5000 m above sea level, ensuring consistent performance in diverse settings.

Can this soft starter be integrated into existing industrial control systems?


Yes, it supports multiple communication protocols, including PROFINET and Modbus, enabling easy integration into established industrial networks for enhanced automation.

What measures are in place to protect the motor from thermal overload?


This soft starter features electronic motor overload protection, ensuring that motors are safely monitored and protected against excessive heat during operation.

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