Astron Non-Isolated Step-Down DC to DC Converters are ideal for use with mobile 12/13.8 VDC equipment. The N2412-40 input voltage range is 22-56 Vin Wide Range 13.8 Volts DC out @40 Amps Peak. Features include LED indicator, over voltage and short circuit protection, input-side over voltage/transient protection, and input-side reverse polarity protection. Includes a separate Remote On/Off connection terminal for use with an ignition switch. Great for use in industrial equipment, trucks, tractors, buses, marine applications, mobile radio and 24 volt aircraft systems. This product ships in approximately 1 days