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  • EN50155 for Rail Applications
  • EN50121-3-2 Class A Emissions for Rail Applications without Additional Components
  • Single and Dual Outputs
  • 3000VDC Isolation
  • -40 to 100°C Operation
  • Remote on/off and 10% Output Trim
  • 5 Year warranty

Product Description

The HTR20 series of DC/DC converters come in both single and dual outputs in a 1.09x1.09” package. Inputs are available in nominal 24 & 110V and outputs from 3.3 to 15V single and dual. They have both EN50155 and EN50121-3-2 approvals for rail applications. The units operate from –40 to +100ᵒC and come complete with remote on/off function and output trim. All models have a FiDUS 5 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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1.09 x 1.09 x 0.65” (27.6 x 27.6 x 16.4mm)

Input Voltage


No Load Input Power

< 0.3 W


up to 90%

Operating Temp

-40 to 100°C Operation. See derating curve






3000VDC Input to Output

1600VDC Case to Input / Output

European Safety Approvals



EN50121-3-2 Conducted and Radiated Class A Emissions

Safety Approvals

HTR20 DoC HTR20 DoC (149 KB)

3D Models

HTR20 3D STP HTR20 3D STP (365 KB)

HTR20 PDF drawing HTR20 PDF drawing (46 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.

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