Home › ProductsAC-DC Power SuppliesOpen Frame / Chassis MountVKR300



  • Very high power density 3 x 5”
  • 200W Convection / 300W Fan cooled
  • 400W Peak power for 5 seconds
  • IT & medical (BF) safety approvals
  • Open frame, U-Channel & Covered versions
  • EN55022 Level B conducted & radiated
  • 10 Year warranty

Product Description

The VKR300 series of compact open frame AC-DC PSUs provide 300W (200W convection) from a 3” x 5” package. The range has options for use in both IT and medical applications and is available with outputs from 12 to 48V. In addition to the rated output, the VKR300 offers a 400W peak for up to 5 seconds. Optional U-channel and covered versions are available, all with a FiDUS 10 year warranty.

Contact us on 01183 420730 or sales@fiduspower.com to confirm stock levels, leadtimes and further prices.

Part numbers
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Open frame: 3 x 5 x 1.42" (76.2 x 127 x 36.1mm)
Covered: 3.3 x 5 x 1.7" (83.8 x 127 x 43mm)
U-channel: 3.3 x 5 x 1.7" (83.8 x 127 x 43mm)

Input Voltage

90-264 VAC

No Load Input Power

< 0.5 W

Harmonic Currents

EN61000-3-2 Class D (Class A compliant)


Up to 93%

Operating Temp

-20 - 70°C, see datasheet for derating curve


Input to Output - 4000VAC
Input to Ground - 1500VAC
Output to Ground - 1500VAC

European Safety Approvals

EN60950-1, 2nd edition, EN60601-1, 3.1 edition, CE, RoHS

US Safety Approvals

UL/CSA 60950-1, 2nd edition
ANSI/AAMI/CSA 60601-1, 3.1 edition


EN55022 Conducted - Level B
EN55022 Radiated - Level B

Safety Approvals

VKR300 DoC VKR300 DoC (152 KB)

3D Models

VKR300 3D PDF VKR300 3D PDF (667 KB)

VKR300 C 3D PDF VKR300 C 3D PDF (2429 KB)

VKR300 C STP VKR300 C STP (5269 KB)

VKR300 STP VKR300 STP (1684 KB)

VKR300 U 3D PDF VKR300 U 3D PDF (1590 KB)

VKR300 U STP VKR300 U STP (3596 KB)

Require a modified standard part?

Based on your specific requirements, our AC-DC power supplies, DC-DC converters and medical grade power supplies can be supplied with variations to input/output parameters and non-standard connections to meet the needs of your application.

Can’t find what you are looking for? Call us 01183 420730 or

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