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The CUI Inc. VMS-275-12 is a versatile AC-DC power supply designed for various applications, including medical equipment. This open frame unit features a 12V nominal output voltage and can deliver up to 275W of continuous power with forced air cooling, or 160W with natural convection. It operates over a wide input voltage range of 80 to 264 Vac and boasts an efficiency of up to 92%.
The power supply is designed for chassis mounting and has a compact, low-profile footprint measuring 5.00" x 3.00" x 0.75". Key electrical features include power factor correction, over-voltage, over-current, and short-circuit protections with auto-recovery. It also includes a 12V/0.5A fan output and standby power consumption of less than 0.5W.
Compliance with standards such as IEC 60601-1-2:2014 (4th edition) highlights its suitability for demanding environments. The VMS-275-12 offers robust performance with features like adjustable output and a wide operating temperature range of -40°C to 70°C.
The nominal output voltage is 12 Vdc.
It uses an open frame package designed for chassis mounting.
The operating temperature range spans from -40°C to 70°C with derating applied at maximum limits.
Maximum output power reaches 275W under forced air cooling conditions, or 160W using natural convection cooling.
Yes, the unit is equipped with active power factor correction to maintain a minimum power factor of 0.95 at full load.
The converter integrates over-voltage, over-current, and short-circuit protection, all operating in hiccup mode with automatic recovery.