3RW4457-6BC35

The 3RW4457-6BC35 is a high-current soft starter in the SIRIUS 3RW44 series. It has a rated current of 780A, an operating voltage range of 400 to 600V AC, a screw-type main circuit terminal block, built-in thyristor and overload protection, and is suitable for soft starting applications of large three-phase motors.

Share To

3RW4457-6BC35 SIRIUS 3RW44 Soft Starter 780A 575V Model

Product Positioning

The 3RW4457-6BC35 is a high-current soft starter in the Siemens SIRIUS 3RW44 series. It uses phase angle control and is suitable for soft start and stop applications of large three-phase asynchronous motors.

Core Product Advantages and Features

Phase angle soft start control

The motor voltage is gradually increased using a voltage ramp method to reduce the starting current surge and mechanical stress.

Adjustable current limit

The starting current limit can be set according to the motor characteristics to protect the motor and power supply system.

Built-in protection function

Integrating motor overload protection and thyristor body protection enhances system operational safety.

project	Specification
Product Type	SIRIUS 3RW44 Soft Starter
Rated operating voltage	400...600V AC (Standard test point 575V)
Control the power supply voltage	115V AC
Rated current (standard wiring)	Approximately 780 A
Main circuit connection method	busbar connection
Auxiliary circuit terminal type	Screw terminals
Control method	Phase angle voltage ramp control
Protection function	Motor overload protection, adjustable current limiting, thyristor body protection
Applicable wiring methods	Supports standard wiring and inside-delta wiring
Protection level	IP00 (Requires installation on a control panel with IP54 or higher)
Applicable motors	Three-phase asynchronous motor
brand	Siemens SIRIUS

Recommend

3RW4766-2HC00

The 3RW4766-2HC00 is a spare set of spring-loaded terminal blocks for the control circuit of the SIRIUS 3RW44 soft starter. It consists of 4 terminal blocks and 24 contacts, and is suitable for replacing original screw-type terminals or repairing and updating control wiring. It allows for quick wiring without the need for a screwdriver.

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.

3RW4456-6BC35

The 3RW4456-6BC35 is a soft starter in the SIRIUS 3RW44 series. It operates at voltages ranging from 400 to 600V AC, has a rated current of approximately 693A, and a control voltage of 115V AC. It features screw-type terminals and a main circuit with a strip, making it suitable for soft start/stop control applications of large motors.