MEAN WELL RSDW40 and RSDW60 Single-Output and RDDW40 and RDDW60 Dual-Output Reliable Railway DC-DC Converters are 40W and 60W module-type converters in a 50.8mm x 25.4mm (2″ x 1″) low-profile package. MEAN WELL RSDW40/60 and RDDW40/60 DC-DC Converters feature international standard pins, high efficiency up to 92%, a wide working temperature range (-40°C to +85°C or +90°C), and 1.6KVDC or 3KVDC isolation. The converters comply with the EN50155 railway standard and feature a 9V to 36V, 18V to 75V, or 40V to 160V 4:1 input range. These railway DC-DC converters offer various output voltages from 3.3V to 48V for single output and ±12V / ±15V for dual outputs.