Home › Manufacturers › Siemens › 3RW4444-2BC45

Siemens

Siemens SIRIUS 3RW4444-2BC45 Soft Starter - 250A, 160kW at 500V

Siemens SIRIUS soft starter, 250A standard, 160kW (500V), phased-out.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RW4444-2BC45

Standard Current 250A

Inside-Delta Current 433A

Rated Power (500V) 160kW

Voltage 400-600V AC

Get a price for 3RW4444-2BC45

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Smooth motor starting Reduces inrush current Protects motor and machinery Spring-type terminals Phased-out product

Product description

The Siemens 3RW4444-2BC45 is a SIRIUS soft starter designed for smooth acceleration of three-phase induction motors. It provides rated current performance of 250A in standard inside-delta configurations, supporting motor power up to 160 kW at 500V AC. This unit operates on a 400-600V AC supply and features 230V AC control voltage with spring-type terminals for secure connections.

Soft starters like this are vital in applications where high starting currents of direct-on-line starting would be detrimental, such as conveyor systems, pumps, fans, and compressors. They reduce mechanical stress on machinery and electrical grid load. Please note, this is a phased-out product with the SIRIUS 3RW5 series, specifically 3RW5544-2HA16, as its preferred successor.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3RW4444-2BC45. Secure this crucial motor control component while available, or inquire about its successor for your new projects.

Technical specifications

Standard Current	250A
Inside-Delta Current	433A
Rated Power (500V)	160kW
Voltage	400-600V AC
Control Voltage	230V AC
Terminals	Spring-type
Series	SIRIUS 3RW44

Common applications

Conveyor Systems

Pump Control

Fan Control

Compressor Starters

Industrial Machinery

Compatible systems

Three-phase induction motors

Also known as

Siemens 3RW44 Soft Starter SIRIUS Motor Starter 3RW4444 Soft Starter

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5544-2HA16 soft starter.

Technical note

Expert tip

While this product is phased out, its successor, the 3RW5544-2HA16, offers enhanced features and should be considered for new installations.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What are the key specifications for the Siemens 3RW4444-2BC45 soft starter?

The Siemens 3RW4444-2BC45 soft starter has a standard current rating of 250A and supports motors up to 160kW at 500V AC. It operates on 400-600V AC and features 230V AC control with spring-type terminals. Note that it is a phased-out product.