Home › ProductsAC-DC Power SuppliesOpen Frame / Chassis MountVKR400



  • Very high power density 4 x 6”
  • 300W Convection / 400W Fan cooled
  • 480W 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 VKR400 series of compact open frame AC-DC PSUs provide 400W (300W convection) from a 4” x 6” package. The range is approved for use in both IT and medical applications and is available with either a 12 or 24V output. In addition to the rated output, the VKR400 offers a 480W 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
Find out more


Open frame: 4 x 6 x 1.38" (101.6 x 152.4 x 35mm)
Covered: 4.4 x 6 x 1.72" (110, x 153 x 43.5mm)
U-channel: 4.4 x 6 x 1.72" (110, x 153 x 43.5mm)

Input Voltage

90-264 VAC

No Load Input Power

< 10 W

Harmonic Currents

EN61000-3-2 Class A & Class D


Up to 94%

Operating Temp

-30 to +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

Other Safety Approvals

ANSI/AAMI/CSA 60601-1, 3.1 edition


EN55022 Conducted - Level B
EN55022 Radiated - Level B

Safety Approvals

VKR400 DoC VKR400 DoC (0 KB)

3D Models

VKR400 3D PDF VKR400 3D PDF (4463 KB)

VKR400 C 3D PDF VKR400 C 3D PDF (7359 KB)

VKR400 C STP VKR400 C STP (16910 KB)

VKR400 STP VKR400 STP (7361 KB)

VKR400 U 3D PDF VKR400 U 3D PDF (5748 KB)

VKR400 U STP VKR400 U STP (9705 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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