R48-500 DC Power for Business-Critical Continuity™ Technical Specifications, R48-500 DC Output Output Voltage, Adjustment Range Output Power Output Power, Derated for Input Voltage Output Current Efficiency Psophometric Noise (System) Temperature Derating Control and Monitoring Rectifier Alarm and Signaling Visual Indications R 48-500 Output power vs. Temperature at 176 Vac and 90Vac % of output power 100 to 250 V AC 85 to 300 V AC 45 to 65 Hz 6.8 A 0.