The ABB DSSR122 (Order Code 48990001-NK) is a specialized rack-mounted power supply unit designed for industrial control environments. This unit is engineered to provide stable DC power conversion, supporting DC input ranges and delivering a regulated DC output suitable for critical automation hardware.

Features

• Designed for integration into ABB Master series rack systems.
• Robust power conversion for DC-input to DC-output applications.
• High-current output capacity for demanding control modules.
• Compact rack-mount form factor for efficient cabinet space utilization.

Technical Specifications

Installation Guidelines

• Ensure the power supply is installed in a well-ventilated rack environment to maintain optimal operating temperatures.
• Verify that the DC input voltage is within the specified 18-30 V range before applying power.
• Always disconnect the primary power source before inserting or removing the module from the rack to prevent electrical arcing or damage to the backplane connectors.
• Ensure proper grounding of the rack chassis to mitigate electromagnetic interference (EMI) and protect sensitive electronic components.
• Check all terminal connections for tightness to prevent heat buildup due to high-current resistance.

FAQ

Is this power supply still in active production? No, this unit has been discontinued by the manufacturer. We provide these units as refurbished or surplus spare parts to support legacy systems.

What is the primary application for the DSSR122? This unit is primarily used as a rack power supply within ABB Master control systems, providing regulated 5V DC power to I/O and controller modules.