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The CUI Inc. VMS-300A-12 is a single-output AC/DC converter designed for chassis mount applications. It accepts a universal input of 90-264 Vac at 47-63 Hz and provides a regulated 12 Vdc output. The converter delivers 200 W of output power under natural convection cooling and up to 300 W with 10 CFM of forced air, making it suitable for a range of power supply needs.
Key electrical specifications include a typical efficiency of 92.5% at full load and 230 Vac input, a no-load power consumption of less than 0.3 W, and active power factor correction meeting EN 61000-3-2. The output features tight regulation with ±1% load regulation and ±0.5% line regulation, and a low ripple and noise of 120 mVp-p. Additional features include a 5 Vdc standby output rated at 1 A, a PS-ON signal, and a Power Good signal.
The converter is housed in a compact 127.0 mm x 76.2 mm x 35.1 mm chassis mount package. It includes a 12 Vdc fan output rated at 500 mA for external cooling. The hold-up time is a minimum of 16 ms at 115 Vac input.
The input voltage range is 90-264 Vac.
The output voltage is 12 Vdc and the maximum output current is 25 A.
The output power is 200 W with convection cooling and 300 W with 10 CFM forced air.
The typical efficiency is 92.5% at full load with 230 Vac input.
Yes, it has a 5 Vdc standby output rated at 1 A and 5 W.
The mounting type is chassis mount.
The dimensions are 127.0 mm x 76.2 mm x 35.1 mm.