ABB DSSR 170 48990001-PC Power Supply Unit

Description

The ABB DSSR 170 48990001-PC Power Supply Unit is an industrial-grade power conversion module designed for use in automated control systems. As part of ABB’s DSSR series, it shares core functionality with comparable units in the line, including converting input power voltages into multiple graded operating voltages required by electronic circuits, similar to high-efficiency switch power supply boards. Key features are expected to include high conversion efficiency, compact size, and lightweight design, with output voltage adjustment managed via the on-off timing of internal switching tubes. The unit likely incorporates a multi-stage power processing workflow: after startup, it filters mains power interference through anti-jamming circuits, then performs rectification, PFC inductor regulation, and filtering to output a 300V DC voltage to the secondary power circuit. The secondary circuit then delivers targeted voltages, such as +5V, to critical system components like CPU circuits, with a dedicated control circuit managing startup and voltage stabilization. Built for industrial environments, it is engineered to maintain stable performance under high load, elevated temperatures, and high humidity conditions, making it suitable for powering PLC systems, frequency converter controls, and other critical automation equipment that requires consistent, reliable power support.