3RW4456-6BC44

The 3RW4456-6BC44 is a SIRIUS 3RW44 series soft starter. It has a standard 400V wiring rating of 780A and 450kW, and can reach 1351A and 800kW with internal delta wiring. The control voltage is 230V AC, making it suitable for soft starting and soft stopping applications of high-power motors.

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3RW4456-6BC44 SIRIUS 3RW44 Soft Starter 780A 450kW

Product Positioning

The 3RW4456-6BC44 is a soft starter from the Siemens SIRIUS 3RW44 series. With standard wiring at 400V, it has a rated current of 780A and a rated power of 450kW, making it suitable for soft start and stop control of large three-phase motors.

Core Product Advantages and Features

High current carrying capacity

With a standard 400V wiring configuration, the rated current reaches 780A, making it capable of handling large motor loads.

Supports internal delta wiring

When using internal delta wiring, the current can be increased to 1351A and the power to 800kW, expanding the application flexibility.

230V AC control voltage

It adopts the 230V AC control power supply commonly used in industrial sites, which facilitates integration with existing control circuits.

project	Specification
Product Type	SIRIUS 3RW44 Soft Starter
Rated operating voltage	200...460V AC (Standard test point 400V)
Control the power supply voltage	230V AC, 50/60Hz
Rated current (standard wiring)	780 A
Rated power (standard wiring, 400V)	450 kW
Rated current (internal delta connection)	1351 A
Rated power (internal delta connection, 400V)	800 kW
Control method	Phase angle voltage ramp control
Protection function	Motor overload protection, adjustable current limiting, thyristor body protection
Protection level	IP00 (Requires installation on a control panel with IP54 or higher)
Applicable motors	Three-phase asynchronous motor
brand	Siemens SIRIUS

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