Home › Manufacturers › Siemens › 3RW4444-6BC44

Siemens

Siemens SIRIUS 3RW4444-6BC44 Soft Starter - 250A

Siemens 3RW4444-6BC44: SIRIUS soft starter for high-feature motor applications.

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

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RW4444-6BC44

Rated Current (Standard) 250 A

Rated Power (Standard) 132 kW (at 400V)

Rated Current (Inside-Delta) 433 A

Rated Power (Inside-Delta) 250 kW (at 400V)

Get a price for 3RW4444-6BC44

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

SIRIUS Soft Starter For High-Feature Applications Soft Start & Ramp-Down 3-Phase Control Innovative Torque Control Screw Terminals

Product description

The Siemens 3RW4444-6BC44 is a SIRIUS soft starter designed for high-feature applications, providing soft starting and ramp-down for three-phase asynchronous motors. It is rated for standard applications at 250 A and 132 kW (at 400V, 40°C), and for inside-delta circuits at 433 A and 250 kW. The unit operates on AC control supply voltages of 230 V and main voltages of 200-460 V AC.

This soft starter features screw terminals for connections and is part of the robust SIRIUS modular system. It's particularly suitable for high motor outputs due to its 3-phase control and innovative torque control for ideal motor startup. The product is phased out, with the SIRIUS 3RW5 series being its successor, specifically the 3RW5544-6HA14.

Stanlo Automation, a veteran-owned provider of surplus industrial automation parts, offers the Siemens 3RW4444-6BC44 SIRIUS soft starter. Secure reliable components for your motor control needs from a trusted source committed to quality and service.

Technical specifications

Rated Current (Standard)	250 A
Rated Power (Standard)	132 kW (at 400V)
Rated Current (Inside-Delta)	433 A
Rated Power (Inside-Delta)	250 kW (at 400V)
Control Supply Voltage	230 V AC
Main Voltage	200-460 V AC
Terminals	Screw
IP Rating	IP00

Common applications

Motor starting and stopping

Industrial machinery

Pump controls

Fan controls

Conveyor systems

Compressors

Compatible systems

Designed for three-phase asynchronous motors within the specified voltage and current ratings. Requires appropriate control voltage supply.

Also known as

Siemens SIRIUS 3RW44 Soft Starter 3RW4444-6BC44 Siemens Motor Starter

Replaces / compatible with

This is a phased-out product. Its successor is the SIRIUS 3RW5 series, with the preferred successor type being 3RW5544-6HA14.

Technical note

Expert tip

Although phased out, ensure that any spare parts or replacements are sourced from reputable suppliers to guarantee authenticity and performance.

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 standard and inside-delta current ratings for the Siemens 3RW4444-6BC44 soft starter at 400V?

At 400V and 40°C, the Siemens 3RW4444-6BC44 soft starter is rated for 250A in a standard circuit configuration and 433A when used in an inside-delta circuit.