3HAB8101-8 ABB DSQC346G Servo Drive

3HAB8101-8 is an ABB DSQC 346G Drive Unit GT used in ABB industrial robot controller systems. In ABB documentation for the S4Cplus platform, DSQC 346G is identified as the GT drive unit and is specified as a 2-axis drive system module.

The unit belongs to the drive section of ABB's legacy robot control architecture, where the drive hardware provides the motor-drive function required for robot axis movement. The 3HAB8101-8 identification is particularly relevant when sourcing replacement hardware for older ABB robotic installations.

ABB's product record identifies 3HAB8101-8 as the Product ID and DSQC 346G as the ABB Type Designation, with DRIVE UNIT GT as the catalog description. The same record indicates that the original product is no longer for sale and lists CS-4003 as the replacement Product ID.

The identification information above is based primarily on ABB product documentation and ABB service documentation.

The DSQC 346G is part of the drive-system module family used with ABB S4Cplus robot controllers. ABB's S4Cplus installation documentation lists several drive-system modules, including:

• DSQC 345A - DC0 DC-link
• DSQC 345B - DC1 DC-link
• DSQC 345C - DC2 DC-link
• DSQC 345D - DC3 DC-link, step down
• DSQC 346G - GT Drive Unit, 2 axes
• DSQC 346E - ECB Drive Unit, 3 axes
• DSQC 358C - DC2T DC-link + single drive unit
• DSQC 358E - DC2C DC-link + single drive unit

This places DSQC 346G specifically within the motion-drive portion of the S4Cplus architecture rather than as a general-purpose PLC or I/O module.

Although ABB's own catalog description is DRIVE UNIT GT, the DSQC 346G is commonly identified in the industrial spare-parts market as a robot servo drive, servo drive unit, or axis drive.

For purchasing and replacement purposes, these descriptions can therefore all be useful search terms, while DRIVE UNIT GT and DSQC 346G should remain the primary product identification. Third-party listings also associate 3HAB8101-8 with ABB S4/S4C/S4C+ robot drive applications.

Because different versions of the 3HAB8101-8 family appear with additional suffixes such as /08D, /08F, /15C, or /17A, the complete identification on the installed unit should be checked before replacement. The base Product ID 3HAB8101-8 identifies the DSQC 346G drive family, while the suffix may identify a particular hardware version or configuration.

ABB lists CS-4003 as the replacement Product ID for 3HAB8101-8. This is important for customers maintaining older ABB robotic equipment where the original DSQC 346G may no longer be available through the normal ABB product range.

However, the replacement Product ID should not automatically be treated as a mechanically or electrically identical drop-in replacement. Before ordering a replacement unit, buyers should compare:

• Original Product ID
• DSQC type designation
• Complete part-number suffix
• Existing robot controller configuration
• Installed drive-unit version
• Existing drive-system arrangement

This is particularly important for legacy ABB robot controllers where several drive-unit variants were used within the same broader S4/S4Cplus family.

ABB's product record gives the following confirmed commercial information for the base 3HAB8101-8:

Some aftermarket listings publish different dimensions, temperatures, electrical ratings, or control specifications for DSQC 346G. Since these values are not consistently supported by the ABB documentation located for this exact Product ID, they are intentionally not included here as confirmed specifications.

 

 

S4Cplus Legacy Robot Spare Part

 

3HAB8101-8 is particularly relevant to maintenance of legacy ABB robot systems. ABB's own service documentation lists the component among the spare parts for S4Cplus M2000-era controllers and identifies it as the DSQC 346G Drive Unit GT.

 

For procurement teams, the model number is therefore often more useful than a generic description such as "servo amplifier" or "robot drive." Searching by both 3HAB8101-8 and DSQC 346G can help match older maintenance records, cabinet labels, BOMs, and replacement-part references.

The following terms can be useful when matching historical documentation or customer records:

• 3HAB8101-8
• 3HAB 8101-8
• DSQC 346G
• DSQC346G
• DSQC-346G
• DRIVE UNIT GT
• GT Drive Unit
• ABB DSQC 346G Drive Unit
• ABB Robot Drive Unit
• ABB S4Cplus Drive Unit
• ABB S4C Drive Unit
• ABB S4Pplus Drive Unit
• ABB Robot Servo Drive
• ABB Robot Axis Drive

The slash-suffixed versions found in the secondary market should not simply be treated as separate base models without checking the complete nameplate and configuration.

What is ABB 3HAB8101-8?

3HAB8101-8 is the ABB Product ID for the DSQC 346G DRIVE UNIT GT, a two-axis drive unit used in ABB's legacy S4Cplus robot drive architecture.

Is 3HAB8101-8 a servo drive?

It is commonly described in the industrial automation spare-parts market as an ABB robot servo drive or servo drive unit. ABB's official catalog terminology is DRIVE UNIT GT.

What does DSQC 346G mean?

DSQC 346G is the ABB Type Designation associated with Product ID 3HAB8101-8. ABB's S4Cplus documentation identifies it as the GT Drive Unit with a two-axis configuration.

Is ABB 3HAB8101-8 discontinued?

ABB's product record states that 3HAB8101-8 is no longer for sale and identifies CS-4003 as the replacement Product ID.

What should be checked before replacing DSQC 346G?

Check the complete 3HAB8101-8 identification, any suffix shown on the installed unit, the DSQC designation, and the existing ABB robot controller and drive configuration before selecting a replacement.

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