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Siemens SIMOREG DC Master Rectifier 6RA7031-6FS22-0, 550V DC 125A

Siemens SIMOREG DC Master rectifier for DC drives.

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ManufacturerSiemens

Part number6RA7031-6FS22-0

Input 460 V 3AC, 104 A

Output (Armature) 550 V DC, 125 A

Output (Field) 375 V DC, 10 A

US Rating 500 V DC, 100 A

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550V DC / 125A armature output 460V 3AC input Microprocessor control Integrated field rectifier Suitable for single-quadrant DC drives Robust industrial design

Product description

The Siemens SIMOREG DC Master is a sophisticated DC thyristor rectifier designed for controlling DC drives. Model 6RA7031-6FS22-0 features a 460V, 3-phase AC input with a current draw of 104A. It provides a controllable output of 550V DC at 125A for the armature circuit and a field output of 375V at 10A.

Equipped with a microprocessor, this rectifier offers advanced control capabilities for single-quadrant drives. It includes a built-in field rectifier (D550/125 MRE-GEE6S22) and is suitable for applications requiring precise DC motor speed control. The output rating is 500V DC, 100A for US applications.

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Technical specifications

Input	460 V 3AC, 104 A
Output (Armature)	550 V DC, 125 A
Output (Field)	375 V DC, 10 A
US Rating	500 V DC, 100 A
Control	Microprocessor controlled
Application	Single-quadrant DC drives
Series	SIMOREG DC Master

Common applications

DC motor control

Industrial drives

Metal processing

Winding machines

Paper mills

Printing presses

Extruders

Compatible systems

Compatible with various DC motors requiring robust speed and torque control.

Also known as

Siemens SIMOREG 6RA7031-6FS22-0 Siemens DC Master Rectifier SIMOREG 125A DC rectifier

Replaces / compatible with

Replaces older analog DC thyristor controllers and provides a modern, microprocessor-controlled solution for DC drives.

Technical note

Expert tip

This rectifier is designed for single-quadrant operation, meaning it can drive a motor in one direction and decelerate it dynamically or coast to a stop.

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Frequently asked questions

What are the output voltage and current ratings of the Siemens SIMOREG DC Master 6RA7031-6FS22-0?

The Siemens SIMOREG DC Master 6RA7031-6FS22-0 provides a controllable output of 550V DC at 125A for the armature circuit and 375V DC at 10A for the field circuit.