The VOLT POLSKA DC-400 24/12V 30A is a step-down converter power supply with a maximum output voltage of 13.8VDC. It has a maximum current rating of 30A and a working temperature range of 0 to 40°C. It has built-in surge and short circuit protection, and conforms to the international safety and electromagnetic compatibility standards. Its robust design features two high-performance printed circuit boards, and both the input and output are isolated. The DC-400 is an ideal choice for any application that requires a reliable and high-performance power supply solution.