VMS-550C-12

The VMS-550C-12 is a high-performance AC/DC power supply manufactured by CUI Inc. Designed for demanding industrial and commercial applications, this unit delivers a nominal 12V DC output capable of sourcing up to 41.6A, resulting in a maximum output power of 499.2W. The converter accepts a wide universal input voltage range of 90-264Vac or 127-370Vdc, along with an input frequency of 47-63Hz. This flexibility ensures reliable operation across global power grids.

Engineered for efficiency and reliability, the VMS-550C-12 achieves a typical efficiency of 91.0% at 230Vac. It incorporates active power factor correction, maintaining a power factor of 0.98 at 115Vac and 0.95 at 230Vac under full load. The unit maintains tight output regulation with line regulation of ±0.5% and load regulation of ±1%. Output ripple and noise are limited to a maximum of 200mVp-p under full load conditions.

Safety and durability are prioritized through multiple integrated protection mechanisms. The power supply includes over-voltage protection set at 15.6Vdc, over-current protection at 105%, and continuous short-circuit protection with auto-recovery capabilities. An over-temperature protection feature also ensures safe operation under thermal stress. The hold-up time is guaranteed for a minimum of 10ms at both 115Vac and 230Vac inputs. The physical footprint measures 127.0mm x 76.2mm x 40.5mm, facilitating straightforward integration into standard equipment enclosures.