5A Non-Isolated Step-Down 24VDC-12VDC Converter. This high efficiency switch-mode step-down DC-DC converter converts an input voltage of 24 VDC nominal (range 20 VDC to 35 VDC) to a highly regulated output voltage of 12 VDC nominal (13.8 VDC) at 5 Amps. The SDC-5 DC-DC converter is non-isolated (no galvanic isolation between input and output) and meant for use in negative ground systems. Features include overvoltage/short-circuit protection, temperature compensated current limit, output-side overvoltage protection, input-side overvoltage/transient protection and input-side reverse polarity protection. Designed for heavy duty applications. Applications include earth moving equipment, heavy trucks, buses, marine vehicles, CB radios, 12 Volt lighting systems and AM/FM sound systems. Great Product.