Model: DSSR 122
Part Number: 48990001-NK
Brand: ABB
Series: Advant Master / MasterPiece / AC 410
Core Function: DC-input / DC-output power supply unit that converts 24 VDC input to a regulated 5 VDC output at 40 A. Used as a rack power supply in ABB Advant Master process control systems to power logic and I/O modules.
HS Code: 8538.90 (Parts suitable for use solely or principally with the apparatus of heading 85.35, 85.36 or 85.37)
Product Parameters
| Parameter | Specification |
|---|---|
| Product Type | Power Supply Unit (Rack) |
| ABB Type Designation | DSSR 122 |
| Input Voltage | 24 VDC (typical range 18–30 VDC) |
| Output Voltage | 5 V DC regulated |
| Output Current | 40 A |
| Power Rating | Approx. 200 W (5 V × 40 A) |
| Spare Fuse | 20 A (Part No. 5672827-20) |
| Dimensions (Net) | Depth 238.5 mm × Height 72 mm × Width 162 mm |
| Weight | 2.35 kg |
| Product Type Code | Power_Supply |
| RoHS Status | Following EU Directive 2011/65/EU (with applicable exemptions) |
| WEEE Category | 5. Small Equipment |
| Country of Origin | Sweden (typical) |
Advantages and Features
- High-current regulated 5 VDC output (40 A) for powering multiple rack modules
- Designed specifically for ABB Advant Master / MasterPiece system racks
- Compact form factor suitable for standard control cabinets
- Reliable DC-DC conversion with industrial-grade components
- Easy replacement with defined spare fuse
- Proven long-term use in process control environments
- Compatible with AC 410 and related Advant system units
Application Cases in Application Fields
- Rack power supply in ABB Advant Master process control systems
- Powering logic, communication, and I/O modules in MasterPiece controllers
- AC 410 / AC 460 system units and I/O subracks
- Process industries (chemical, petrochemical, pulp & paper, power generation)
- Legacy Advant system maintenance and spare parts support
- Redundant or primary 5 V power distribution within control racks
Comparisons with Competing Products
| Aspect | ABB DSSR 122 (48990001-NK) | Generic 5 V / 40 A DC-DC Converters | Modern Advant / 800xA Power Supplies |
|---|---|---|---|
| System Specific | Advant Master optimized | Generic | Newer platforms |
| Output | 5 VDC / 40 A regulated | Similar ratings available | Higher efficiency / digital monitoring |
| Form Factor | Rack-mounted (specific dimensions) | DIN-rail or open-frame | Modular / different mounting |
| Best For | Legacy Advant Master systems | General industrial use | New installations / upgrades |
Selection Suggestions and Precautions
Selection Suggestions:
- Confirm the system is an ABB Advant Master / MasterPiece / AC 410 installation requiring a 5 V / 40 A rack supply.
- Verify input power is stable 24 VDC.
- Check available space matches the dimensions (238.5 × 72 × 162 mm).
- Keep spare fuses (20 A, 5672827-20) on hand.
- For system upgrades, evaluate migration paths to newer ABB platforms (e.g., 800xA).
Precautions:
- Ensure correct polarity and proper input voltage range (typically 18–30 VDC).
- Do not exceed the 40 A output rating.
- Follow ABB guidelines for rack installation, ventilation, and grounding.
- Replace the fuse only with the specified type and rating.
- This is a critical power component — failure can affect the entire rack.
- Handle as ESD-sensitive equipment where applicable.
Recent Popular Same-Brand / Related Models
- Other DSSR series power regulators / supplies for Advant systems
- Related Advant Master rack components and I/O subracks (e.g., DSRF 197)
- AC 410 / AC 460 system units
- Preventive maintenance kits that include DSSR 122
- Newer ABB power supplies for 800xA and AC 800M systems
- Spare fuses and related rack accessories
