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Siemens 3RW4443-2BC35 SIRIUS Soft Starter - 180A Standard, 312A Inside-Delta

Siemens SIRIUS 3RW4443 soft starter, 180A standard, 312A inside-delta.

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ManufacturerSiemens

Part number3RW4443-2BC35

Voltage 400-600V AC

Control Voltage 115V AC

Standard Current 180A (575V, 50C)

Inside-Delta Current 312A (575V, 50C)

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Soft starter functionality High current ratings Spring-type terminals Controlled motor acceleration Wide voltage range Phased-out product

Product description

The Siemens 3RW4443-2BC35 is a SIRIUS soft starter designed for smooth motor acceleration. It offers values of 180 A at 575 V (50°C) in standard configuration and 312 A in inside-delta configuration. This unit operates on 400-600 V AC with 115 V AC control voltage and features spring-type terminals.

This soft starter is suitable for various industrial applications requiring controlled motor starting, such as pumps, fans, and conveyors, protecting motors from mechanical stress and electrical surges. It's commonly used in manufacturing, water treatment, and material handling industries.

As a veteran-owned surplus parts distributor, Stanlo Automation provides reliable access to hard-to-find and phased-out components like the 3RW4443-2BC35. We ensure quality and availability for your critical automation needs.

Technical specifications

Voltage	400-600V AC
Control Voltage	115V AC
Standard Current	180A (575V, 50C)
Inside-Delta Current	312A (575V, 50C)
Standard Power	150hp (575V)
Inside-Delta Power	300hp (575V)
Terminals	Spring-type
Series	SIRIUS 3RW44

Common applications

Motor control

Pump applications

Fan control

Conveyor systems

Material handling

Industrial machinery

Compatible systems

Compatible with Siemens SIRIUS motor control components. Designed for use with motors requiring soft start functionality.

Also known as

Siemens SIRIUS 3RW4443-2BC35 3RW44432BC35 Soft Starter 180A

Replaces / compatible with

This product is phased out and has been succeeded by the SIRIUS 3RW5 series, with 3RW5543-2HA16 being the preferred successor.

Technical note

Expert tip

Note that this unit is a phased-out product; ensure compatibility with the intended system and consider the successor series for new installations.

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Frequently asked questions

What are the electrical specifications for the Siemens 3RW4443-2BC35 soft starter?

The Siemens 3RW4443-2BC35 operates on 400-600V AC main power with 115V AC control voltage. At 575V and 50°C, it handles 180A in standard configuration and 312A in inside-delta configuration.