Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | DSSA165 |
| Order number | 48990001-LY |
| Product type | Industrial power supply unit |
| System family | Advant Master / Advant OCS |
| Input voltage | 120/220/230 V AC |
| Output voltage | 24 V DC |
| Output current | 25 A |
| Rated output power | 600 W, calculated from rated output voltage and current |
| Intended application | Compatible Advant Master control-system equipment |
| Preventive-maintenance kit | PM10YDSSA165-1 |
| Exchange reference | EXC48990001-LY |
| Mounting arrangement | Verify against the installed assembly |
| Input frequency | Confirm from the applicable technical documentation |
| Protection functions | Verify from the manufacturer’s documentation |
| Operating temperature | Not verified for this exact unit |
| Condition | Confirm with supplier |
Application Scenarios & Pain Points
- Legacy DCS power restoration: Replace a failed supply in an existing Advant Master installation after confirming the original unit’s order number.
- Controller and I/O power support: Supply compatible equipment requiring the documented 24 V DC output.
- Preventive maintenance: Use the manufacturer’s listed maintenance-kit reference when planning scheduled service.
- Unstable control-system operation: Investigate supply output, input power, wiring, and connected loads when unexplained controller resets or I/O interruptions occur.
A field troubleshooting point: low DC voltage may be caused by excessive load, a poor connection, or an upstream AC supply problem—not just a defective power supply. Measure the supply under the approved test conditions and check the connected load before replacing the unit.
DSSA165
Related Products
The following are related ABB Advant Master parts or maintenance references. They are not all direct replacements.
- DSSA160 — 48990001-LT: Related Advant Master power-supply model; verify output ratings and compatibility before substitution.
- DSSR116 — 48990001-FK: ABB Advant Master power-supply family component; confirm its electrical characteristics.
- DSSR122 — 48990001-NK: Related ABB power supply; not a confirmed substitute for DSSA165.
- DSSR170 — 48990001-PC: Another ABB power-supply model used in legacy automation applications; verify the complete specification.
- DSSB145: Related Advant Master power-supply family reference; confirm the order number and ratings.
- DSSB146: Related ABB power-supply model; not a direct replacement without documentation.
- PM10YDSSA165-1: ABB preventive-maintenance kit reference for DSSA165.
- ABB Advant Master / Advant OCS: The control-system platform associated with the DSSA165 power supply.
The Engineer’s Guide
Trap 1: Matching only the 24 V DC output
Warning: Two power supplies with the same output voltage can have different current capacities, input requirements, connectors, and mounting arrangements.
Practical tip: Match order number 48990001-LY, input voltage, 25 A output rating, terminal arrangement, and the installed system’s requirements.
Trap 2: Ignoring the load during troubleshooting
A supply can show acceptable voltage with little load and still fail under operating demand. Conversely, a short circuit or overloaded downstream circuit can cause a healthy supply to trip or sag.
Practical tip: Check the connected load and wiring before installing a replacement. Use approved isolation procedures and measure only under safe, authorized test conditions.
Trap 3: Assuming the replacement includes maintenance accessories
The power supply and its preventive-maintenance kit are separate catalog items.
Practical tip: Confirm whether the quotation covers only DSSA165 or also includes PM10YDSSA165-1. Request a clear list of included parts and any available inspection or test records.
Frequently Asked Questions
1. What is the ABB DSSA165 used for?
The is an industrial power supply unit for the ABB Advant Master process control system. Its documented output is 24 V DC at 25 A. Confirm that the connected equipment and installation match the unit’s electrical requirements.
2. What is the order number for ?
The documented ABB product ID is 48990001-LY. ABB also lists EXC48990001-LY as an exchange reference. Check the unit label and procurement documentation to ensure the correct item is ordered.
3. What input voltage does require?
ABB product documentation specifies 120/220/230 V AC input and 24 V DC, 25 A output. Confirm the applicable input selection and wiring requirements from the unit’s documentation before energizing it.
4. Can replace DSSA160 or DSSR122?
Do not assume direct interchangeability. These are different model designations, and the available references do not establish universal substitution. Compare input and output ratings, connectors, physical arrangement, and the approved system documentation before choosing an alternative.
5. What symptoms may indicate a failing ?
Possible symptoms include unstable DC output, controller resets, power alarms, or interruptions affecting connected equipment. These symptoms are not conclusive proof of a failed supply. Check the AC input, DC output under load, wiring, and downstream circuits first.
6. Is the ABB still available, and how do I verify condition?
is a legacy Advant Master component. Current availability and support should be confirmed with the supplier or ABB. Request photographs of the actual label, a written condition statement, and any available functional-test records. Do not assume that a listed item is new or tested.
7. What are the lead time and warranty for ?
Lead time and warranty depend on the supplier and specific unit. Request written confirmation of stock status, dispatch estimate, warranty duration, return terms, and testing scope. For a control-system power supply, verify the output under the intended load before returning the installation to service.
