Ruggedized 15 Watt DC/DC converter in compact 1” x 1” standard package approved for railway applications and harsh environment: the THN 15WIRSeries Compact 1” x 1” x0.4” standard package Ultra-wide 4:1 input voltage range 9–36, 18–75, 36–160 VDC EN 50155 and EN 61373 approval for railway applications Qualification for fire behaviour according to EN 45545-2