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Siemens SIRIUS 3RW4454-2BC45 Soft Starter (Phased Out)

Siemens SIRIUS 3RW4454-2BC45 Soft Starter.

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ManufacturerSiemens

Part number3RW4454-2BC45

Rated Current (Standard) 615 A

Rated Current (Inside-Delta) 1065 A

Rated Power (400V) 400 kW (std) / 710 kW (delta)

Voltage Range 400-600 V AC

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Veteran-owned

CAGE: 9NK75

Smooth Motor Start/Stop Reduces Mechanical Stress Integrated Bypass Contacts Motor Overload Protection Adjustable Current Limitation Phased-out Product

Product description

The Siemens 3RW4454-2BC45 is a SIRIUS soft starter designed for controlling three-phase AC motors. It provides smooth starting and stopping of motors, reducing mechanical stress and electrical surges. At 500 V and 40°C, its standard rating is 615 A and 400 kW, while in an inside-delta connection, it is rated for 1065 A and 710 kW. It operates on a voltage range of 400-600 V AC with a 230 V AC control voltage and features spring-type terminals.

This soft starter is crucial for applications requiring controlled motor acceleration, such as in pumps, fans, conveyors, and compressors, helping to extend motor life and reduce energy consumption during startup. Please note that this is a phased-out product.

Stanlo Automation, your veteran-owned surplus parts distributor, offers the Siemens 3RW4454-2BC45. While phased out, we can help you source this component or find suitable alternatives for your industrial automation needs.

Technical specifications

Rated Current (Standard)	615 A
Rated Current (Inside-Delta)	1065 A
Rated Power (400V)	400 kW (std) / 710 kW (delta)
Voltage Range	400-600 V AC
Control Voltage	230 V AC
Terminals	Spring-type

Common applications

Pump Control

Fan Control

Conveyor Systems

Compressor Starting

Industrial Motor Control

Material Handling

Compatible systems

Compatible with standard three-phase AC motors within the specified voltage and power ratings.

Also known as

SIRIUS 3RW44

Replaces / compatible with

This product is phased out, with the SIRIUS 3RW5 series being its successor. The preferred successor type is >>3RW5552-2HA16<<.

Technical note

Expert tip

This model is a 'Phased-out product'. While functional, long-term support and availability of spare parts may be limited. Consider the successor series 3RW5 for new installations.

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Frequently asked questions

What is the main function of the Siemens 3RW4454-2BC45 soft starter?

The Siemens 3RW4454-2BC45 soft starter provides controlled acceleration and deceleration for three-phase AC motors. This reduces mechanical stress on the motor and connected equipment, prolongs component life, and minimizes electrical inrush currents.