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Siemens SIRIUS Soft Starter - Size S3, 63A

Siemens SIRIUS Size S3 soft starter for motor control.

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ManufacturerSiemens

Part number3RW3044-1AB14

Type Soft Starter

Series SIRIUS

Size S3

Rated Current 63 A

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Veteran-owned

CAGE: 9NK75

Smooth motor start/stop Size S3 rating Integrated bypass contactor Wide voltage range Screw connections Reduces mechanical stress

Product description

The Siemens 3RW3044-1AB14 is a SIRIUS soft starter with a Size S3 rating. It is designed to handle 63 A and 30 kW of power at 400 V, with an input voltage range of AC 200 to 460 V and a control voltage range of UC 110 to 230 V. It features screw connections for reliable electrical connections and an integrated bypass contact system for improved operational efficiency.

This soft starter is essential for controlling the ramp-up and ramp-down of three-phase AC motors, reducing mechanical stress and electrical surges during startup. It is widely used in applications such as pumps, fans, compressors, and conveyor systems across various industries, including manufacturing, water treatment, and building automation.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RW3044-1AB14. We provide quality industrial components and dependable service to ensure your operational continuity.

Technical specifications

Type	Soft Starter
Series	SIRIUS
Size	S3
Rated Current	63 A
Rated Power	30 kW @ 400 V
Input Voltage	AC 200-460 V
Control Voltage	UC 110-230 V
Connection	Screw Terminal
Bypass	Integrated

Common applications

Pump control

Fan control

Compressor control

Conveyor systems

Industrial machinery

Building automation

Compatible systems

Three-phase AC motors.

Also known as

SIRIUS Soft Starter Cushioned Starter 3RW30 Siemens motor starter

Replaces / compatible with

The 3RW3044-1AB14 is being phased out, with the successor being 3RW4037-1BB14. Functionality and dimensions may differ.

Technical note

Expert tip

The integrated bypass contactor reduces heat generation and energy loss during continuous motor operation after the start-up phase.

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Frequently asked questions

What is the rated power for the Siemens 3RW3044-1AB14 soft starter at 400V?

The Siemens 3RW3044-1AB14 SIRIUS soft starter is rated for 30 kW of power when operating at 400 V. This makes it suitable for controlling medium to heavy-duty industrial motors.