The CSD-DR120B-48 is a 120W DIN rail-mounted DC-DC converter from MEAN WELL. It delivers a 48VDC output at up to 2.5A from a 16.8-33.6VDC input range. Designed for industrial and railway applications, it features reinforced 4KVDC isolation, fanless operation, and supports 150% peak load capacity. Its slim 32mm width makes it ideal for compact control panels and automation systems.