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Siemens SIRIUS 3RW4435-2BC44 Soft Starter - 134A, 75kW

Siemens SIRIUS 3RW4435-2BC44 Soft Starter - 134A

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ManufacturerSiemens

Part number3RW4435-2BC44

Standard Current 134A (40°C)

Standard Power 75kW (400V)

Inside-Delta Current 232A

Inside-Delta Power 132kW

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Veteran-owned

CAGE: 9NK75

Smooth motor start Reduced mechanical stress Overload protection Voltage control Spring-type terminals Phased-out product

Product description

The Siemens SIRIUS soft starter 3RW4435-2BC44 is designed for smooth and controlled starting of three-phase motors. It provides standard values of 134A and 75kW at 400V, with an inside-delta rating of 232A and 132kW. The unit operates on AC voltages between 200-460V and features spring-type terminals for connection. This is a phased-out product with a preferred successor being the SIRIUS 3RW5535-2HA14.

This soft starter is ideal for applications requiring reduced mechanical stress on machinery and a smooth ramp-up of motor speed, found in conveyor systems, pumps, fans, and compressors across various industrial sectors.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, can supply the Siemens 3RW4435-2BC44. Secure this component while supplies last, or inquire about its successor.

Technical specifications

Standard Current	134A (40°C)
Standard Power	75kW (400V)
Inside-Delta Current	232A
Inside-Delta Power	132kW
Voltage	200-460V AC
Terminals	Spring-type
Series	SIRIUS 3RW44

Common applications

Motor control

Conveyor systems

Pumps

Fans

Compressors

Industrial machinery

Compatible systems

Three-phase AC motors

Also known as

Siemens Soft Motor Starter SIRIUS 3RW44 Starter 75kW Motor Soft Start

Replaces / compatible with

This is a phased-out product. The preferred successor is the Siemens SIRIUS 3RW5535-2HA14. It replaces traditional star-delta starters in many applications.

Technical note

Expert tip

As a phased-out product, availability is limited. Consider the successor series 3RW5 for new installations or when long-term support is critical.

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Frequently asked questions

What is the standard current rating for the Siemens 3RW4435-2BC44 soft starter at 40°C?

The Siemens SIRIUS 3RW4435-2BC44 soft starter has a standard current rating of 134A at 40°C. It also supports an inside-delta current of 232A for specific motor configurations.