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Siemens SIRIUS 3RW4458-2BC46 Soft Starter - Phased Out

Siemens 3RW4458-2BC46 SIRIUS soft starter, 1000kW, 690V - Phased Out.

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

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ManufacturerSiemens

Part number3RW4458-2BC46

Series SIRIUS

Part Number 3RW4458-2BC46

Voltage 400-690V AC

Control Voltage 230V AC

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12-month warranty

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Same-day dispatch

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Worldwide delivery

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Veteran-owned

CAGE: 9NK75

Controlled motor start-up Reduced mechanical and electrical stress Suitable for high power applications Spring-type terminals for easy connection Phased-out product with recommended successor

Product description

The Siemens SIRIUS 3RW4458-2BC46 is a soft starter designed for controlled motor acceleration. Rated for 690V and 40°C, it has a standard rating of 970A and 1000kW. This unit is suitable for within-delta connection up to 600V. It operates on 400-690V AC with a 230V AC control voltage and features spring-type terminals. Please note, this is a phased-out product.

Soft starters like this are used to reduce the mechanical stress on machinery and electrical load during motor startup, commonly found in pump applications, fan systems, conveyors, and compressors. Their use extends equipment life and improves power quality by limiting inrush current.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RW4458-2BC46. While this is a phased-out product, we may have available stock. We recommend the successor model 3RW5556-2HA16 for new installations. Contact us for availability and potential alternatives.

Technical specifications

Series	SIRIUS
Part Number	3RW4458-2BC46
Voltage	400-690V AC
Control Voltage	230V AC
Standard Rating (690V, 40°C)	970A, 1000kW
Within-Delta Voltage	up to 600V
Terminals	Spring-type
Status	Phased-out

Common applications

Pump Control

Fan Systems

Conveyor Belts

Compressors

Industrial Machinery

Motor Starting

Compatible systems

Siemens SIRIUS Motor Control Systems Industrial Motor Applications

Also known as

Siemens 3RW44582BC46 SIRIUS Soft Starter 1000kW Siemens Motor Starter

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5556-2HA16.

Technical note

Expert tip

When replacing this phased-out unit, ensure the new 3RW5556-2HA16 is correctly sized and configured for your motor and application requirements.

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Frequently asked questions

What is the recommended successor for the phased-out Siemens SIRIUS 3RW4458-2BC46 soft starter?

The preferred successor for the Siemens SIRIUS 3RW4458-2BC46 soft starter is the Siemens SIRIUS 3RW5556-2HA16. This offers updated technology and continued support.