3RW4453-6BC44

The 3RW4453-6BC44 is a SIRIUS 3RW44 series soft starter. The standard 400V wiring is rated at 551A and 315kW, while the internal delta wiring can reach 954A and 560kW. The dimensions are 510x640x290mm, making it suitable for soft starting applications of medium and large three-phase motors.

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3RW4453-6BC44 SIRIUS 3RW44 Soft Starter 551A 315kW

Product Positioning

The 3RW4453-6BC44 is a soft starter from the Siemens SIRIUS 3RW44 series. It has a rated current of 551A and a rated power of 315kW under 400V power supply, and is suitable for soft start and stop control of medium and large three-phase motors.

Core Product Advantages and Features

Supports internal delta wiring

When using internal delta wiring, the current can be increased to 954A and the power to 560kW, expanding the application flexibility.

Complete motor protection

It has built-in overload protection, thyristor protection, and thermistor evaluation functions.

Includes motor brake output

It provides motor brake control output function, making it convenient to use with mechanical braking systems.

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)	551 A
Rated power (standard wiring, 400V)	315 kW
Rated current (internal delta connection)	954 A
Rated power (internal delta connection, 400V)	560 kW
External dimensions	510 x 640 x 290 mm
Main circuit connection method	busbar connection
Auxiliary circuit terminal type	Screw terminals
Contact configuration	Three sets of normally open contacts for the main circuit, plus three sets of normally open auxiliary contacts and one set of switching contacts.
Protection function	Motor overload protection, adjustable current limiting, thyristor body protection, motor brake output
brand	Siemens SIRIUS

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