Product Overview The ETP48100‑B1 is a highly integrated, carrier‑grade 1U 19‑inch rack embedded DC power system designed for telecom access networks, OLT equipment, BBU/RRU, small base stations, data rooms and edge computing scenarios. It converts wide‑range AC input into a stable, adjustable -48V DC output, with a maximum output current of 100A and rated power of 3000W. Adopting a compact 1U structure with front maintenance, intelligent monitoring and full protection design,