This series of high-efficient bulk front end power supplies come with a vast amount of standard compliances, protections and efficiencies including utilizing the PMBus communications protocol. The power supplies meet the rigorous EN55022-B and FCC part 15 Class B conducted and radiated emissions standards, and comply with applicable EMC immunity standards, including EN61000-3-2 and -3, EN61000-4-2, -3, -4, -5 and -11 and EN6100-3-2. Protections include active power factor correction, active AC inrush control and incorporates fan cooling with automatic speed control.