Technical Data
Parameter Specification / Value (Based on PSS Series Architecture)
Product Type Modular, High-Availability DC Power Supply System
Input Voltage (AC) 3-phase, 400/480 V AC (Standard for this power class)
Input Frequency 50/60 Hz
Output Voltage (DC) 24 V DC (Nominal, adjustable)
Rated Output Current The core PSS72/124 module is designed to deliver approximately 124 A per module at 24V DC.
Rated Output Power Approximately ~3.0 kW per module (if 124A @ 24V). A system with multiple modules can provide significantly higher total power.
Redundancy Configuration Full N+1 or N+M Redundancy supported. Modules operate in parallel with active current sharing and are hot-swappable without interrupting the output.
Efficiency Very High, typically > 92% at full load.
Power Factor (PF) > 0.98 (typical), minimizing reactive power demand.
Protection & Monitoring Comprehensive: Overload, short-circuit, overvoltage, overtemperature. System-wide monitoring via communication interface (e.g., CANopen) and relay alarm contacts.
Cooling Forced air cooling with temperature-controlled fans.
Connection High-current screw terminals or busbars for input and output.
Mounting / Enclosure 19-inch rack-mount modules installed in a 500mm deep cabinet (-500L). The cabinet includes integrated power distribution busbars and cooling.
Operating Temperature 0°C to +60°C (with specified derating above +40°C or +50°C).
Standards & Approvals CE, cULus, ATEX (for specific hazardous area variants), IEC 62368-1, IEC 62133, EN 50178.
The ABB PSS72/124-500L is a High-Power, Modular Redundant DC Power Supply System from ABB's PSS (Power Supply System) series. It represents the upper echelon of this product line, engineered to serve as the primary, ultra-high-capacity 24V DC power source for the most demanding industrial automation, process control, and safety-critical applications.