The Dimension CD series offer DIN rail DC/DC converters in the 92 to 120 W output power range in a very compact housing. These DC/DC converters are allowed to run with a battery or similar sources. The CD5.121 converts a 24 V voltage to a 12 VDC voltage. The CD5.121 includes all the essential basic functions and has a power reserve of 20% included. This extra power can be used continuously up to 45 deg C. The output is electrically isolated from the input in a safe way. The input is protected against reversed voltages and contains a soft start function.