ABB DSSR122 48990001-NK Power Supply Module

The ABB DSSR122 48990001-NK is a rack power supply module designed for ABB Advant Master distributed control system. It converts the input power into stable DC power to supply controllers, communication boards and I/O modules inside the control rack.

This module supports redundant configuration and integrates multiple power protection functions. It is commonly used as spare parts for DCS cabinet maintenance and renovation in power, petrochemical and metallurgical industries.

Main Specifications

• Brand: ABB; Model: DSSR122 48990001-NK; Type: Rack Power Supply Module
• Applicable System: ABB Advant Master distributed control platform
• Core Tasks: Voltage conversion, backplane power distribution, overvoltage/overcurrent protection, power status diagnosis
• Interface: Power input terminals, rack internal backplane connector
• Installation: Plug-in slot mounting inside standard ABB control rack
• Operating Environment: 0℃ ~ +60℃, 5%‑95% RH non‑condensing, industrial anti‑vibration grade
• Certifications: CE, compliant with industrial DCS EMC and safety standards

Core Functions

• Provide stable working power for various functional boards in the ABB DCS control rack to ensure continuous operation of the system.
• Built-in overvoltage, overcurrent, short circuit and overtemperature protection to avoid component damage caused by power anomalies.
• Support redundant power supply deployment to realize automatic switching and prevent system shutdown caused by single power failure.
• Equipped with LED status indicators for maintenance personnel to quickly judge the operating state and fault points of the power module.
• Conformal coating design prevents dust and moisture erosion inside the cabinet and improves adaptability to industrial environments.
• Standard plug-in structure supports fast disassembly and replacement, effectively reducing equipment maintenance downtime.

Application Scenarios

• Spare-part replacement for ABB Advant Master DCS racks in thermal power plants, oil refineries, chemical plants and metallurgy factories.
• Power supply hardware for boiler control, power generation regulation and large-scale process production monitoring systems.
• Maintenance backup inventory for renovation and after-sales maintenance projects of legacy ABB distributed control systems.
• Matching power module cooperating with ABB controller, communication unit and analog/digital I/O modules.
• Retrofit replacement for aged modules with no output, indicator failure and internal circuit burnout faults.

• Global aftermarket spare supply for automation maintenance teams maintaining ABB industrial control equipment worldwide.