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Siemens 3RW4425-1BC46 SIRIUS Soft Starter - Phased Out

Siemens 3RW4425-1BC46 SIRIUS Soft Starter (Phased Out).

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ManufacturerSiemens

Part number3RW4425-1BC46

Voltage 400-690 V AC

Control Voltage 230 V AC

Rating (690V/40C) 57 A, 55 kW

Inside-Delta Up to 600 V

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Smooth motor start-up Reduces inrush current Screw terminals Rated for 690V operation Inside-delta capability up to 600V

Product description

The Siemens 3RW4425-1BC46 is a SIRIUS soft starter designed for motor control. It is rated for values at 690 V and 40°C standard conditions, providing 57 A and 55 kW. It can be used inside-delta up to 600 V. It operates on 400-690 V AC and requires 230 V AC for control voltage, featuring screw terminals. This is a phased-out product.

Soft starters are used to gradually ramp up motor speed, reducing mechanical stress and electrical inrush current, making them ideal for applications like conveyor belts, pumps, and fans where smooth start-up is critical.

Stanlo Automation offers a range of industrial automation components. While this specific part is phased out, we can help you find its successors or compatible alternatives. Source your Siemens parts from a trusted veteran-owned distributor.

Technical specifications

Voltage	400-690 V AC
Control Voltage	230 V AC
Rating (690V/40C)	57 A, 55 kW
Inside-Delta	Up to 600 V
Terminals	Screw

Common applications

Conveyor Systems

Pump Control

Fan Control

Compressors

Material Handling

Compatible systems

AC Induction Motors

Also known as

Siemens SIRIUS 3RW4425 3RW4425-1BC46 soft starter

Replaces / compatible with

This is a phased-out product. The preferred successor is the SIRIUS 3RW5525-1HA16.

Technical note

Expert tip

Ensure proper heatsink and ventilation as per the datasheet, especially when operating near the 40°C ambient temperature rating.

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Frequently asked questions

What is the recommended successor for the Siemens 3RW4425-1BC46 soft starter?

The Siemens 3RW4425-1BC46 is a phased-out product. The preferred successor is the SIRIUS 3RW5525-1HA16. It is recommended to consult the Siemens product documentation for full compatibility and feature comparisons.