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Siemens SIRIUS 3RW30 Soft Starter, 63A

Siemens SIRIUS Size S3 soft starter, 63A, 30kW, 200-460V AC input.

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ManufacturerSiemens

Part number3RW3044-1AB04

Series SIRIUS 3RW30

Size S3

Rated Current 63 A

Motor Power 30 kW @ 400 V

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Smooth motor start-up Size S3 rating 63A current handling 30kW motor support Wide AC input voltage range 24V UC control Screw connections

Product description

The Siemens 3RW3044-1AB04 is a SIRIUS soft starter, size S3, with a rated current of 63A, capable of controlling motors up to 30kW at 400V. It features a wide AC control voltage input range of 200-460V and a control voltage of 24V UC (universal control). This model utilizes screw connections for secure and reliable wiring.

Soft starters like this Siemens unit are essential for reducing mechanical stress on machinery and electrical load during motor startup. They are commonly used in applications such as conveyor systems, pumps, fans, and compressors where smooth acceleration is required to prevent damage and conserve energy.

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Technical specifications

Series	SIRIUS 3RW30
Size	S3
Rated Current	63 A
Motor Power	30 kW @ 400 V
Control Voltage Input	200-460 V AC
Control Voltage	24 V UC
Connection Type	Screw Terminal

Common applications

Conveyor systems

Pump control

Fan control

Compressor starting

General motor control

Material handling

Compatible systems

AC motors up to 30kW at 400V Control systems requiring 24V UC signals

Also known as

Siemens S3 soft starter SIRIUS 3RW30 soft starter 63A motor starter

Replaces / compatible with

This Siemens SIRIUS 3RW30 soft starter is designed to provide controlled motor starting for motors up to 30kW. It can replace older soft starter models or be used in new installations requiring smooth motor acceleration.

Technical note

Expert tip

For optimal performance and longevity, ensure the motor's full load current does not exceed the 63A rating of the soft starter and that the control voltage supply is stable at 24V UC.

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Frequently asked questions

What is the control voltage range for the Siemens SIRIUS 3RW3044-1AB04 soft starter?

The Siemens 3RW3044-1AB04 SIRIUS soft starter operates with a universal control voltage (UC) of 24V. The main power input range for this unit is from 200 to 460V AC.