Technical Specifications:​ AC input 85–264 VAC, 47–440 Hz; DC input 110–340 VDC; nominal output 24 VDC ±10%; 50 W standard 16-way configuration, expandable toward 100 W/200 W depending on subunit; inrush approximately 30 A at 230 VAC full load in cited version; operating temperature -20°C to 60°C or -25°C to 55°C depending on source; 5–95% RH non-condensing; overvoltage, overload and short-circuit protection; CE/RoHS/EMC per listed version; 19-inch rack format, 1U/3U depending on variant and source.

Functional Features:​ Auto-sensing AC/DC input, regulated isolated 24 VDC output, multi-channel distribution, overload recovery, visual status indication and rack-mount integration with System 57 modules.

Application Scenarios:​ System 57 gas detection racks, fire/gas control cabinets, industrial safety monitoring systems, oil/gas/chemical sites requiring centralized 24 VDC backplane power.

Material Composition:​ Industrial metal/rack enclosure with power semiconductors, EMI filtering components, PCB assemblies and rear input/output terminals; exact housing alloy not required for functional use.

Structural Characteristics:​ Rack-mount power section with rear AC/DC input, rear or front DC distribution, earth stud, cooling ventilation openings and standard 19-inch mounting holes.

Working Principle:​ Mains or DC input passes through EMI filtering and switched-mode conversion; output is rectified, regulated and isolated to maintain 24 VDC under varying load; protection circuits limit overvoltage, overload and short-circuit conditions.

Installation Requirements:​ Mount in 19-inch cabinet with clearance for ventilation; connect AC/DC input using rated cable and proper earthing; connect 24 VDC output polarity to System 57 backplane; verify input voltage range before energizing.

Usage Precautions:​ Do not exceed rated output wattage; ensure ventilation and ambient temperature limits; isolate input before maintenance; check earth connection to reduce noise and fault risk; use overload-protected branches for each load group.