Emerson HD4825-3 Rectification Module for Telecom Power Supply As a 48V 25A Telecom rectifier, Emerson HD4830-3 integrated use of modern power electronics and industrial control technology development, built-in advanced microprocessor, a comprehensive soft-switching technology, efficiency and achieve industry-leading level of EMC. Emerson HD4825-3 Features: 1. Entire Eff.: No less than 90% 2. Wide input voltage range: From 90V-290Vac 3. Power factor to 0.99 4. Plug-in type, easy and fast respond HD4825-3 DC input Alarm and Protection: 1. DC in over voltage protection 2. Over Voltage Alarm 3. Over Voltage Alarm Recover 4. Low Voltage Alarm 5. Lower Voltage Alarm Recover Product Detail