Bel Fuse Inc. PFC250-4000F AC DC Power Supply

The Bel Power Solutions PFC250-4000F is a 250 W enclosed AC-DC power supply (off-board) that accepts 85–264 VAC input over 47–63 Hz and delivers four DC outputs from a single mains source. Model suffix F indicates an integral cooling fan for use in compact enclosures. It provides two 5 V rails and two 12 V rails with currents of 5 V outputs up to 40 A and 3 A, and 12 V outputs up to 10 A and 6 A, respectively, for a total rated output of 250 W; it also features power factor correction (PF ≈ 0.95) and typical efficiency in the 65–75% range at full load on 110 VAC. The supply includes hold-up time around 20 ms, controlled turn-on behavior, and input protection, making it suitable for industrial controllers, automation panels, and telecom equipment that require multiple regulated rails from a single unit.