VMS-450C-27

The VMS-450C-27 from CUI Inc. is a compact AC/DC converter delivering a single 27V output at up to 16.7A, with a maximum power rating of 451W. It accepts a universal AC input from 90 to 264 Vac or a DC input from 127 to 370 Vdc, making it suitable for global applications. The converter features active power factor correction (PFC), achieving a typical efficiency of 93.5% at 230 Vac, which reduces energy waste and heat generation.

Electrical protection includes over voltage protection (35.1 Vdc minimum), over current protection (105% load), short circuit protection with hiccup mode and auto recovery (<5s recovery time), and over temperature protection with auto recovery. The initial set point accuracy is ±1%, line regulation ±0.5%, and load regulation ±1%. Hold-up time is 12 ms minimum at 115 Vac and 16 ms at 230 Vac, ensuring ride-through during brief power interruptions.

The converter operates over a temperature range of -40°C to +70°C with appropriate derating. It measures 127.0 mm x 76.2 mm x 38.5 mm (5.00" x 3.00" x 1.52") and features a compact enclosed design. The isolation voltage is 4 kV, and the product complies with safety standards 60335-1 (household) and 60601-1 (medical). Additional features include adjustable output, remote sense, and a standby output.