3RW4046-1BB04

The 3RW4046-1BB04 is a standard soft starter in the Siemens SIRIUS 3RW40 series S3 housing. It has a rated operating voltage of 200 to 480V, a rated current of 73A at 50°C, and a rated current of 50HP at 460V. The control power supply voltage is 24V AC/DC, making it suitable for use with general low-voltage automation control circuits.

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Product Positioning

The 3RW4046-1BB04 is a Siemens SIRIUS 3RW40 series S3 housing soft starter with a rated current of 73A and a 24V AC/DC control power supply design. It is the most basic and economical control voltage selection in this current rating.

Core Product Advantages and Features

24V standard control power supply

The control circuit voltage is 24V AC/DC, which is directly compatible with the output voltage of most PLCs.

S3 casing 73A rated

The rated current is 73A at 50°C, which corresponds to a motor of approximately 25kW at 230V and approximately 50HP at 460V.

Adjustable current limiting startup

The starting current limit can be adjusted according to the characteristics of the motor on site to reduce the impact during startup.

Built-in motor overload protection

Integrating overload monitoring functionality reduces the need for additional protective components within the control panel.

project	Specification
Case size	S3
Rated current (50°C)	73 A
Rated operating voltage	200...480 V AC
Control power supply voltage	24 V AC/DC
Motor power (230V)	Approximately 25 kW
Motor power (460V, UL)	50 HP
Main circuit terminal type	Screw terminals
Main standards	IEC 60947-4-2
Reference weight (S3 casing)	Approximately 1.9 kg
Applicable occasions	Three-phase motor applications such as pumps, conveyors, and compressors

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