Description

DSSR122 48990001‑NK Rack Power Supply Unit

Technical Specifications

• Product Model: DSSR122 48990001‑NK
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 VDC (±10 %) DC input
• Operating Temperature: ‑5 °C ~ +55 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Output voltage stabilization <20 ms
• Protection Class: IP20 rack‑mount power‑supply unit
• Accuracy Class: Industrial regulated power‑supply grade
• Output Frequency: Not applicable
• Rated Current: Output 5 VDC 40 A, max 280 W output power
• Function: Advant Master system rack power supply; converts 24 VDC field power to regulated 5 VDC rack‑bus power for controller and I/O modules
• Protection: Over‑current, over‑voltage, short‑circuit protection; field‑replaceable 20 A spare fuse
• System Compatibility: ABB Advant Master DCS platform
• Diagnostics: Power‑good status indicator
• Certifications: CE
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 2.35 kg
• Dimensions: 162 × 72 × 238.5 mm (W×H×D)ABB Group
• 

Product Overview

DSSR122 (48990001‑NK) is rack‑mount DC‑to‑DC power supply for ABB Advant Master DCS control racks. It delivers stable 5 VDC high‑current bus power to drive rack‑resident controllers and I/O boards. Robust industrial protection mechanisms prevent downstream hardware damage under field‑fault conditions. Obsolete DCS power‑supply unit available as refurbished and new‑old‑stock spare parts for process‑plant DCS cabinet maintenance.

Application Notes

‑ Install inside Advant Master control rack designated power‑supply slot. ‑ Observe total rack power‑budget when configuring multiple I/O modules. ‑ Replace spare fuse only with specified 20 A part number. ‑ Typical deployment: pulp‑and‑paper, petrochemical Advant Master DCS spare‑part stocking.