MINMAX Railway DC-DC Converter family offer industrial standard quarter brick with output power rating from 50 to 75 Watt which are designed to meet stringent requirements and harsh environment. Quarter Brick DC-DC converters are available for railway input voltage with 72V, 110V VDC and tight regulation for 5V, 12V, 15V, 24V VDC output voltage. In accordance with EN50155 approval, railway DC-DC Converters conform：(1) railway input voltage range and transient requirement. (2) vibration and thermal shock test meets EN61373. (3) cooling, dry and damp heat test meets IEC/EN 60068-2 (4)railway EMC standard EN50121-3-2 and complies also with railway approval EN50155 (IEC60571). Advanced circuit topology provides a very high efficiency up to 92%, allowing baseplate temperature up to 105℃ and very high I/O isolation up to 3000VAC with reinforced insulation. Further features include overload/voltage/temp., short circuit protection, remote ON/OFF, output voltage trim, output sense and complies specifically fire protection test meets EN45545-2 to ensure safety during railway/railroad vehicle operation. MINMAX Railway DC-DC converters are high reliable solutions for critical railway applications in traction inverter, backup power system, train operation monitor, gate controller and many railway systems.