Description
The ABB DSSB-01C Control Unit 68300746 is a main control board assembly designed for ABB ACS800-07 cabinet-built AC drive systems. It functions as the primary control board for the Diode Supply Unit (DSU), providing control logic, monitoring functions, and interface management between the power section and drive control system.
The DSSB-01C PC Board Kit is used in ABB industrial drive applications requiring reliable power conversion control. It supports ACS800-07 6/12-pulse drive configurations and is suitable for high-power motor control systems used in industrial automation, process plants, and heavy-duty machinery.

DSSB-01C 68300746
🔹 Product Parameters
| Parameter | Description |
|---|---|
| Brand | ABB |
| Model | DSSB-01C |
| Series | ACS800 Drive Series |
| Product Name | Control Unit / Main Control Board PC Board Kit |
| Part Number | 68300746 |
| Replacement Part | 64703919 |
| Origin / Place of Origin | Finland / Estonia |
| Product Status | New Surplus / Industrial Spare Part |
| Dimensions | Approx. 506 × 226 × 56 mm |
| Weight | Approx. 1.8 kg |
| Power | ABB ACS800 Drive Internal Control Power Supply |
| Discontinued | Legacy model, available through industrial spare parts channels |
🔹 Technical Features
⚙️ Designed for ABB ACS800-07 cabinet-built AC drive systems.
⚙️ Functions as the main control board for the DSU (Diode Supply Unit).
⚙️ Provides drive control processing, monitoring, and interface functions.
⚙️ Supports ABB 6-pulse and 12-pulse drive configurations.
⚙️ Provides reliable communication between the control unit and power conversion section.
⚙️ Suitable for large motor drives, industrial automation systems, and power conversion applications.
⚙️ Modular PC board design allows easier maintenance and replacement of existing drive systems.
🔹 Common Questions & Answers
Q: What is the main function of the ABB DSSB-01C?
A: The DSSB-01C works as the main control board for the DSU unit in ABB ACS800 drive systems, handling control processing and system interface functions.
Q: Which ABB systems use the DSSB-01C 68300746?
A: It is mainly used in ABB ACS800-07 cabinet-built 6/12-pulse AC drive systems.
Q: What is the difference between DSSB-01C and 68300746?
A: DSSB-01C is the ABB type designation, while 68300746 is the ABB product ID used for ordering and identification.
Q: What are common failure symptoms of this control board?
A: Typical issues include DSU communication faults, drive startup failures, control alarms, unstable operation, or loss of power section monitoring signals.
Q: What should be checked before replacing the DSSB-01C?
A: Confirm the drive model, board revision, firmware compatibility, connector wiring, parameter settings, and DSU configuration before installation.
Q: Can DSSB-01C replace other ABB control boards directly?
A: Replacement should be based on the exact ABB part number and compatible ACS800 drive configuration to ensure correct operation.
🔹 Recommended ABB Models
- ABB DSSB-01C 68300746 Control Unit PC Board Kit
- ABB DSSB-01B Control Unit Board
- ABB DSSB-02 Control Unit Board
- ABB RINT-5211 Main Interface Board
- ABB RINT-5311 Interface Board
- ABB AINT-01C Interface Board
- ABB RDCO-03 Communication Module
- ABB RDCO-02 Communication Module
- ABB RMBA-01 Modbus Adapter Module
- ABB RLON-01 LonWorks Adapter Module
- ABB RTAC-01 Pulse Encoder Interface Module
- ABB DCS800 Power Converter Control Board
- ABB ACS800-07 Control Unit
- ABB ACS800-307 Supply Unit Control Board
- ABB ACS800 Drive Main Control Board Series
