1. General Information

• Model: DSSR122

• Part Number: 48990001-NK

• Type: Rack Mount Power Supply

• Manufacturer: ABB

• Origin: Sweden

• Application: ABB Advant / Master System racks, industrial control cabinets

2. Electrical Specifications

• Input Voltage: 24 V DC ±20%

• Rated Output Current: 6 A

• Power Rating: 144 W (max)

• Output Voltage: 24 V DC regulated

• Protection: Overvoltage, overcurrent, short circuit, reverse polarity

• Efficiency: >90% (typical)

3. Mechanical & Environmental

• Dimensions (W × H × D): 152 × 102 × 279 mm (6.0" × 4.0" × 11.0")

• Weight: 2.4 kg (5.4 lbs)

• Operating Temperature: -20°C to +55°C

• Storage Temperature: -40°C to +85°C

• Relative Humidity: 5%–95% RH, non‑condensing

• Protection Class: IP20

• Mounting: Standard ABB rack / cabinet mount

4. Key Features

• Compact rack‑mount design for industrial control systems

• Regulated 24 V DC output with 6 A continuous current

• Built‑in overload and short‑circuit protection

• High efficiency and low heat dissipation

• LED indicators for power status and fault diagnosis

• Galvanic isolation between input and output

• Compatible with ABB Advant, Master, and S400 I/O systems

5. Certifications

• CE, UL, RoHS compliant

6. Applications

• Process automation (power, chemical, oil & gas)

• ABB DCS/PLC system power distribution

• Industrial cabinet power supply for I/O modules

• Redundant power systems for critical control loops