Voltcraft bench mountable laboratory power supply unit dpps series voltcraft dpps 32 20 the voltcraft dpps 32 20 is a bench mountable laboratory power supply unit the psu serves as a potential free dc voltage source to operate low voltage consumables the adjustable output can be tapped with up to 5a at the front and up to the full nominal current rating at the back the front output is limited to 5a and protected against overload connection on the front is performed with 4mm safety socket