Technical Data
Parameter Specification / Value (Based on PSS Series Typical Data)
Product Type Modular High-Capacity DC Power Supply System
Input Voltage (AC) 3-phase, 400/480 V AC (Typical for PSS high-power modules)
Input Frequency 50/60 Hz
Output Voltage (DC) 24 V DC (Nominal, adjustable within a range, e.g., 24-28V)
Rated Output Current The core PSS44/76 module likely provides 76 A or a similarly high current at 24V DC. The exact value must be confirmed from the official datasheet.
Rated Output Power Approximately ~1.8 kW (if 76A @ 24V).
Redundancy Support Yes. Modules can be configured in N+1 parallel redundancy with load sharing and hot-swap capability to ensure maximum system availability.
Efficiency High efficiency, typically > 90%.
Power Factor (PF) High, typically > 0.95.
Protection Features Overload, overvoltage, short-circuit, and overtemperature protection.
Monitoring & Signals Provides remote alarm signals (e.g., "Power Good", "Module Fail") via relay contacts or a system bus.
Cooling Fan-cooled for high power dissipation.
Connection Heavy-duty screw terminals for input and high-current output connections.
Mounting Designed for mounting in a 19-inch rack or cabinet (the -500L likely indicates a specific cabinet depth of 500mm).
Operating Temperature Typically 0°C to +60°C (with derating above a certain temperature).
Approvals CE, cULus, ATEX (for hazardous areas - specific variants), IEC/EN 60950-1, IEC/EN 62133.
The ABB PSS44/76-500L is a Heavy-Duty, High-Current Power Supply System from ABB's PSS (Power Supply System) modular product range. It is designed as a central, high-capacity DC power source for industrial automation and process control systems, specifically to reliably power a large number of distributed I/O modules, sensors, actuators, and field devices in demanding environments.