The Mastervolt Isolated DC Master 12/12-3 and 12/12-6 are compact DC-DC converters designed for recreational and semi-professional applications where stable DC conversion is required. These isolated converters provide galvanic isolation between input and output circuits, ensuring increased safety and suppression of disturbances for sensitive devices. With dimensions of 89 x 87 x 50 mm and a weight of 280 g, these units have a nominal input voltage of 12 V with an operating range of 10-15.5 V DC. The converters deliver a nominal output voltage of 13.6 V with a continuous output current of 3 A and a nominal output power of 41 W. A key feature is the temporary boost capability, which provides an output current of 4 A for up to 2 minutes when additional power is needed. The units support both negative and positive ground configurations and operate within a temperature range of -13 °C to 80 °C. Natural cooling ensures efficient operation with minimal heat generation. These converters have an IP53 protection rating, making them suitable for various environmental conditions. Installation is straightforward with included mounting brackets, screws, and connectors. The transparent housing allows for visual inspection of the internal components. Equipped with CE and E-mark certifications, these DC-DC converters are designed for reliable performance in marine, automotive, and mobile power supply applications where precise voltage conversion and electrical isolation are essential.