Description
The ABB DSSA 165 Power Supply Unit is a high-reliability industrial power module designed for ABB Advant Master distributed control systems. It provides regulated 24V DC power for controllers, I/O modules, communication equipment, and other automation system components requiring stable continuous operation.
The DSSA 165 is part of the ABB Advant OCS (Open Control System) power supply family and is commonly installed in ABB MasterPiece 200, MasterView 800, and related legacy process automation platforms. It converts AC input power into reliable DC output power for critical control system infrastructure.
This power supply module is widely used in power plants, chemical processing, oil & gas, marine automation, and industrial production facilities where long-term maintenance of existing ABB distributed control systems is required.
DSSA 165
📌 Product Parameters
| Parameter | Description |
|---|---|
| Brand | ABB |
| Model | DSSA 165 |
| Part Number | 48990001-LY |
| Series | Advant Master / Advant OCS |
| Product Name | Distributed System Power Supply Unit |
| Origin / Place of Origin | Sweden |
| Product Status | New Surplus / Refurbished Industrial Spare |
| Dimensions | Approx. 480 × 170 × 200 mm |
| Weight | Approx. 26 kg |
| Power Supply | Input 120/220/230 VAC, Output 24VDC 25A |
| Discontinued | Legacy Product, Used for Existing System Maintenance |
📌 Product Datasheet
| Parameter | Description |
|---|---|
| Module Type | Industrial AC/DC Power Supply |
| ABB Type Designation | DSSA 165 |
| Output Voltage | 24V DC |
| Output Current | 25A |
| Input Voltage | 120 / 220 / 230 VAC |
| Output Power | Approx. 600W |
| System Compatibility | ABB Advant Master Process Control System |
| Application | Controller, I/O rack and automation equipment power supply |
| Installation | ABB Control Cabinet / Rack Mounting |
| Protection Function | Industrial power protection and stable DC regulation |
📌 Common Questions & Answers
❓ Q: What is the main function of ABB DSSA 165?
A: The DSSA 165 provides stable DC power to ABB Advant Master control systems, supporting controllers, I/O modules, and other automation components.
❓ Q: Which ABB systems use DSSA 165?
A: It is mainly used in ABB Advant Master, Advant OCS, MasterPiece 200, and MasterView 800 control system environments.
❓ Q: What are common failure symptoms?
A: Typical issues include loss of 24VDC output, controller restart, unstable I/O operation, power alarms, or DCS rack communication problems.
❓ Q: Is DSSA 165 a controller module?
A: No. It is a dedicated power supply unit designed to provide electrical power for ABB automation systems.
❓ Q: What should be checked before replacement?
A: Verify input voltage, output voltage/current rating, system compatibility, wiring connections, rack installation position, and power requirements.
❓ Q: Can DSSA 165 replace other ABB power modules?
A: Replacement depends on the Advant system configuration, power requirements, and original ABB part number.
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