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Compact Open Frame Ac-Dc Power Supplies Carry IEC 60601-1 4th Edition Approvals for Medical Applications

TUALATIN, Ore. — November 28, 2017 — CUI’s Power Group today announced the introduction of five new open frame series, ranging from 180 W up to 550 W, to its line of internal ac-dc medical power supplies. ( ) Certified to the medical 60601‑1 edition 3.1 safety standards for 2 x MOPP applications and 4th edition EMC requirements, the VMS‑180, VMS‑225, VMS‑275, VMS‑350, and VMS‑550 series feature high efficiency up to 94% and high power densities up to 30 W/in3. The new models are housed in 2 x 4 inch (50 x 101 mm) and 3 x 5 inch (76 x 127 mm) packages with profiles measuring as low as 0.75 inches (19 mm), providing a compact, high density solution for medical diagnostic equipment, medical monitoring devices, and dental applications.

All of the new VMS series provide output voltage options from 12 to 58 Vdc, feature wide universal input voltage ranges from 80 to 264 Vac, and offer no-load power consumption as low as 0.5 W. The 180 W to 550 W models also carry an input to output isolation of 4200 Vac with leakage current ratings as low as 0.3 mA at 230 Vac. Operating temperatures range at full load from -40 up to +50°C with forced air cooling, derating to 50% load at +70°C. Additional features include protections for over voltage, over current, and short circuit, power factor correction, and a 12 Vdc/500 mA fan output.

These medical power supplies further meet EN 55011 Class B limits for conducted and radiated emissions and achieve an MTBF of 3.37 million hours, calculated per Telcordia SR-332 Issue 3.

The VMS series are available immediately with prices starting at $108.94 per unit at 25 pieces through distribution. Please contact CUI for OEM pricing. (

Product name: VMS-180, VMS-225, VMS-275, VMS-350, VMS-550
Availability: Stock to 12 weeks
Possible users: Medical, dental, home healthcare applications
Primary features: Medical safety approval, high density, low profile Cost: $108.94 per unit at 25 pieces through distribution

View details for the VMS-180 series

View details for the VMS-225 series

View details for the VMS-275 series

View details for the VMS-350 series

View details for the VMS-550 series

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