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Siemens SIRIUS Soft Starter 3RW4422-1BC44 (Phased Out)

Siemens SIRIUS Soft Starter 3RW4422-1BC44 (Phased Out).

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ManufacturerSiemens

Part number3RW4422-1BC44

Manufacturer Siemens

Model SIRIUS 3RW4422-1BC44

Standard Rating (400V) 29A, 15kW

Delta Rating (400V) 50A, 22kW

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CAGE: 9NK75

Controlled motor start-up Reduced mechanical stress Reduced electrical stress Screw terminals SIRIUS product line

Product description

The Siemens SIRIUS soft starter, part number 3RW4422-1BC44, is designed for controlled motor start-up. Standard ratings at 400V, 40°C are 29A and 15kW, while in a delta connection, it handles 50A and 22kW. It operates with a voltage range of 200-460V AC and features screw terminals. Please note, this is a phased-out product.

This soft starter was used to reduce mechanical stress on machinery and electrical stress on the power supply during motor startup, common in pump, fan, and conveyor applications. Its successor is the SIRIUS 3RW5 series, with the preferred replacement being the 3RW5516-1HA14.

Stanlo Automation, a veteran-owned surplus distributor, may have the Siemens 3RW4422-1BC44 available. Contact us for availability of phased-out or superseded parts for your automation needs.

Technical specifications

Manufacturer	Siemens
Model	SIRIUS 3RW4422-1BC44
Standard Rating (400V)	29A, 15kW
Delta Rating (400V)	50A, 22kW
Voltage Range	200-460V AC
Terminals	Screw

Common applications

Motor Control

Pump Control

Fan Control

Conveyor Systems

Industrial Machinery

Machine Automation

Compatible systems

AC Motors

Also known as

Siemens SIRIUS soft starter, 3RW44 soft starter

Replaces / compatible with

This product is phased out. The preferred successor is the Siemens SIRIUS 3RW5516-1HA14 soft starter.

Technical note

Expert tip

As a phased-out product, ensure compatibility and availability of spare parts or consider the recommended successor, 3RW5516-1HA14, for new installations.

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Frequently asked questions

What is the successor to the Siemens 3RW4422-1BC44 soft starter?

The Siemens 3RW4422-1BC44 is a phased-out product. The successor is the SIRIUS 3RW5 series, with the preferred replacement model being the Siemens 3RW5516-1HA14.